- Type of paper
: Book
Title: Mixing, Mixers and Frequency Synthesizers
- Authors:
- Modlic, Borivoj
- Bartolić, Juraj (2316)
- Editors
- Matutinović, Želimir
Publisher: Školska knjiga
ISBN: 953-0-30651-1
Year: 1995
Number of pages: 412
Number of references: 788
Language: hrvatski
- Type of paper
: Paper in book
Title:
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
Publisher: COST 223
Year: 1991
Pages: from 338 to 342
Number of references: 3
Language: engleski
Keywords: Antenna, Microstrip antenna, Antenna array, Rectangular microstrip patch
- Type of paper
: Paper in book
Title:
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
Publisher: COST 223
Year: 1993
Pages: from 125 to 136
Number of references: 15
Language: engleski
Keywords: Microstrip antenna, Active antenna, Antenna measurement, Activedevice measurement
- Type of paper
: Paper in book
Title:
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
- Bonefačić, Davor
Publisher: COST 245
Year: 1993
Number of references: 5
Language: engleski
- Type of paper
: Paper in book
Title:
- Authors:
- Šipuš, Zvonimir
- Bartolić, Juraj (2316)
- Bonefačić, Davor
Publisher: COST 245
Year: 1993
Pages: from CRO01 to CRO10
Number of references: 4
Language: engleski
- Type of paper
: Paper in book
Title:
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
- Bonefačić, Davor
Publisher: COST 245
Year: 1994
Pages: from CRO-1 to CRO-3
Number of references: 3
Language: engleski
- Type of paper
: Paper in book
Title:
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
- Bonefačić, Davor
Publisher: COST 245
Year: 1994
Pages: from CRO-4 to CRO-5
Number of references: 5
Language: engleski
- Type of paper
: Paper in journal
Title: Some Aspects of Microwave Diode Mixer Simulation
- Authors:
- Bartolić, Juraj (2316)
- Bartolić, Juraj (2316)
Journal: Elektrotehnika
Number: 4
ISSN: 0013-5844
Volume: 35
Year: 1992
Pages: from 179 to 186
Number of references: 9
Language: hrvatski
Summary: A numerical method for the Schotky diode microwave
mixersimulation is described in this paper. The method is based
uponsubdivision of the network into linear and nonlinear parts. Thevoltage
and current waveforms are determined by the use of theharmonic balance
technique and the reflection algorithm.Computing is provided in the time
and frequency domains. The fastFourier transform algorithm is used to
convert between thefrequency and time domain. Some examples of diode
mixersimulation for different loading environments are given.
Keywords: Diode mixer, Microwave mixer, Computer application, Simulation
- Type of paper
: Paper in journal
Title:
- Authors:
- Šipuš, Zvonimir
- Bartolić, Juraj (2316)
- Stipetić, Boris
Journal: Electronics Letters
Number: 20
ISSN: 0013-5194
Volume: 28
Year: 1992
Pages: from 1886 to 1888
Number of references: 5
Language: engleski
Summary: A simple full-wave method for analysing rectangular
microstripantennas is presented. The problem of voltage term calculation
iselucidated in the case of microstrip-fed antenna. A new modelfor
calculating the voltage term is proposed and compared to theother two
models taken from literature.
Keywords: Antennas, Microstrip antennas, Moment method
- Type of paper
: Paper in journal
Title: Microstrip Active Gunn-Patch Antenna Technology
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
- Zentner, Ervin
Journal: Elektronikai Technologia, Microtechnika
Number: 5
ISSN: 0236-8676
Year: 1992
Pages: from 145 to 149
Number of references: 7
Language: mađarski
Summary: The paper presents the results of the Institute of
High-FrequencyTechnology in the area of advanced antenna technology.
Basicconcepts of the active antenna copmosed of Gunn diodesand rectangular
patches are presented. Using quasi-opticalcombining technique a simple
active array of two Gunn-patchelements on glass cloth reinforced PTFE
substrate was created.The measurements showed high radiation power,
advantageouspolarisation characteristics and low second harmonic
content.Experiments demonstrate feasibility of the oscillating
antennaconcept in transmitting active arrays and
quasi-opticalmicrowave-millimeter wave power combiners.
Keywords: Antennas, Active antennas, Microstrip antennas, Active microstrip antennas
- Type of paper
: Paper in journal
Title: Technology of Interference Measurement Systems for
Satellite Radiocommunication
- Authors:
- Hrabar, Silvio
Journal: Elektronikai Technologia, Microtechnika
Number: 5
ISSN: 0236-8676
Year: 1992
Pages: from 195 to 198
Number of references: 2
Language: mađarski
Summary: In this paper, possibilities of
electromagnetic
interference signals measurements, which might cause incorrect
work of satellite earth station are considered. The measurement
method is developed, and technology demands on components of
measurement system are analyzed. Upon the theoretical approach,
the automatic interference measuring system has been realised.
With this system, interference measurements within the project
of selecting the site for the first satellite earth station in
Croatia have been done.
Keywords: Measurement, Microwave measurement, Interference, Satellite radiocommunications
- Type of paper
: Paper in journal
Title:
- Authors:
- Zentner, Ervin
- Bartolić, Juraj (2316)
Journal: Electronics Letters
Number: 3
ISSN: 0013-5194
Volume: 29
Year: 1992
Pages: from 252 to 253
Number of references: 5
Language: engleski
Summary: The problem of mobile radio system outage in the presence
of twosignal third order intermodulation interferences is presented.The
probability that the desired signal level exceeds theinterference level by
a predetermined value is defined, computedand graphically illustrated. For
all signals the superpositionof lognormal and Rayleigh distributions is
assumed.
Keywords: Electromagnetic compatibility, Mobile radio systems, Nonlinear Networks, Interference
- Type of paper
: Paper in journal
Title:
- Authors:
- Bartolić, Juraj (2316)
Journal: Automatika
Number: 3-4
ISSN: 0005-1144
Volume: 34
Year: 1993
Pages: from 121 to 126
Number of references: 6
Language: engleski
Summary: An efficient and sufficiently good general method of
microwave mixer analysis is presented. The process involves first analyzing
the non-linear device under large-signal excitation only. By the use of
nonlinear analysis the LO voltage waveform is obtained, and diode
differential conductance and capacitanceare determinated. A linear diode
model, and conversion admittance are formed which relate the small-signal
sideband currents and voltages of the diode. The expressions for conversion
loss and port impedance are determined. A computer program is developed to
perform the analysis. Results are presented to show how the reactive
terminating impedances at image and sum frequency ports affect mixer input
and output impedances, and mixer conversion loss.
Keywords: diode mixer, microwave mixer, nonlinear analysis, frequency conversion, computer application, simulation
- Type of paper
: Paper in journal
Title: Intermodulation Distortion Estimation of Small Signal
Amplifiers
- Authors:
- Nađ, Robert
Journal: Automatika
Number: 3-4
ISSN: 0005-1144
Volume: 34
Year: 1993
Pages: from 127 to 130
Number of references: 4
Language: hrvatski
Summary: Bipolar transistor CAD modelling is performed. As a basis
the model elements obtained from S parameter measurements and additional DC
measurements are used. The small signal model is extended to nonlinear
incremental model. A wideband feedback amplifier is designed. The output
spectrum of the realized circuit with the low excitation level is measured.
A nonlinear amplifier transfer function for weak nonlinearities is obtained
by the use of Volterra series representation. The results obtained by
measurements and simulation are conpared.
Keywords: bipolar junction transistor model, intermodulation distortion, nonlinear incremental model, small signal amplifier, Volterra series, weak nonlinearity
- Type of paper
: Paper in journal
Title:
- Authors:
- Šipuš, Zvonimir
- Bartolić, Juraj (2316)
- Milin, Željka
Journal: Microwave and Optical Technology Letters
Number: 10
ISSN: 0895-2477
Volume: 7
Year: 1994
Pages: from 464 to 466
Number of references: 5
Language: engleski
Summary: An application of the patch shape symmetry for the
basis-function selection for the Green's function / Galerkin's solution is
reported. As a result many impedance matrix elements are equal to zero and
the computation time is reduced. The symmetry properties of four commonly
used microstrip patch antennas are described as examples.
Keywords: Antennas (microstrip), matematical techniques
- Type of paper
: Paper in journal
Title: A numerical solution for the excess capacitance of a
microstrip step discontinuity
- Authors:
- Božiković, Aljoša
Journal: Elektrotehnika
Number: 3
ISSN: 0013-5844
Volume: 37
Year: 1994
Pages: from 91 to 99
Number of references: 22
Language: hrvatski
Summary: A numerical solution for the excess capacitance and
inductance of a microstrip step discontinuity is obtained by the method of
moments. The discontinuity is a transition between two semi-infinite
infinitesimally thin perfectly conducting strips. Above ground plane, these
strips are immersed in a medium that has constant permeability. A numerical
solution for the excess capacitance of a compensated discontinuity is
obtained by the same method. Compensation of discontinuity in transmission
lines has been carried out by removing appropriate triangular portion from
the discontinuity configurations and by a gradual change in the conductor
cross section in such a way that the characteristic impedance of the
connected lines remain constant right up to the junction.
- Type of paper
: Paper in journal
Title: Intermodulation Products Statistics for Various Signal
Models of Their Components
- Authors:
- Zentner, Ervin
Journal: Automatika
Number: 3-4
ISSN: 0005-1144
Volume: 35
Year: 1994
Pages: from 73 to 77
Number of references: 5
Language: hrvatski
- Type of paper
: Paper in journal
Title: Small Signal RF Amplifier Distortion Analysis Using
Volterra Series Representation
- Authors:
- Nađ, Robert
Journal: Automatika
Number: 1-2
ISSN: 0005-1144
Volume: 35
Year: 1994
Pages: from 3 to 10
Number of references: 8
Language: hrvatski
Summary: Second and third order intermodulation distortion small
signal amplifier using Volterra series is analyzed. Functional series in
high series amplifiers with memory are used. Incremental nonlinear model is
necessary for nonlinear transfer function evaluation. Bipolar transistor
model on the basis of S-parameter measurements is performed. It is possible
to obtain second and third intermodulation distortion components inn
dependence of the source and load impedance. Optimal source and load
impedance for maximum values of second and third order intercept points is
found.
Keywords: small signal amplifier, weak nonlinearity, intermodulation distortion, Volterra series, nonlinear incremental model
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bartolić, Juraj (2316)
- Bartolić, Juraj (2316)
Proceedings title: Proceedings of the Third International Symposium of New Technologies
Language: engleski
Place: Zagreb
Year: 1991
ISBN/ISSN: 86-81997
Pages: from 41 to 41
Meeting: Third international Symposium of New Technologies
Held: from 10/15/91 to 10/17/91
Keywords: Mobile radiocommunications
- Type of paper
: Paper in proceedings
Title: Technology of the Six-port Microwave Network Analyzers
- Authors:
- Bartolić, Juraj (2316)
- Hrabar, Silvio
Proceedings title: Proceedings of the Third International Symposium of New Technologies
Language: hrvatski
Place: Zagreb
Year: 1991
ISBN/ISSN: 86-81997
Pages: from 60 to 65
Meeting: Third international Symposium of New Technologies
Held: from 10/15/91 to 10/17/91
Keywords: Microwave measurements, Network analysis, Six-port network analyzer
- Type of paper
: Paper in proceedings
Title: Comparison of Three Mehtods for the Analysis of the
Microvawe Planar Antennas
- Authors:
- Bartolić, Juraj (2316)
- Miletić, Alenka
- Šipuš, Zvonimir
Proceedings title: Proceedings of the Third International Symposium of New Technologies
Language: engleski
Place: Zagreb
Year: 1991
ISBN/ISSN: 86-81997
Pages: from 55 to 59
Meeting: Third international Symposium of New Technologies
Held: from 10/15/91 to 10/17/91
Keywords: Microstrip antenna, Numerical methods, Transmission line model, Cavity model, Moment method
- Type of paper
: Paper in proceedings
Title: Microstrip Antenna Technology
- Authors:
- Bartolić, Juraj (2316)
- Zentner, Ervin
- Miletić, Alenka
- Šipuš, Zvonimir
Proceedings title: Proceedings of the Third International Symposium of New Technologies
Language: engleski
Place: Zagreb
Year: 1991
ISBN/ISSN: 86-81997
Pages: from 66 to 70
Meeting: Third international Symposium of New Technologies
Held: from 10/15/91 to 10/17/91
Keywords: Antennas, Microstrip antennas
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Zentner, Ervin
Proceedings title: Proceeding of the Third International Symposium of New Technologies
Language: engleski
Place: Zagreb
Year: 1991
ISBN/ISSN: 86-81997
Pages: from 75 to 78
Meeting: Third international Symposium of New Technologies
Held: from 10/15/91 to 10/17/91
Keywords: Radiocommunications, Channel assignment
- Type of paper
: Paper in proceedings
Title: Spectrum Efficiency of Mobile Radiotelephon Systems with
Sectorized Cells
- Authors:
- Zentner, Ervin
Proceedings title: Zbornik 33. Simpozija ETAN-a u pomorstvu
Language: hrvatski
Place: Zadar
Year: 1991
ISBN/ISSN: 0353-4685
Pages: from 275 to 278
Meeting: 33. Simpozij ETAN u pomorstvu
Held: from 06/24/91 to 06/26/91
Keywords: Mobile communications, Spectrum efficiency, Sectorized cells
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
- Zentner, Ervin
Proceedings title: Zbornik 34. Simpozija ELMAR
Language: engleski
Place: Zadar
Year: 1992
ISBN/ISSN: 86-80139-0107
Pages: from 144 to 148
Meeting: 34. Međunarodni Simpozij ELMAR
Held: from 09/28/92 to 09/30/92
Keywords: Antenna, Active antenna, Microstrip antenna, Antenna arrays, Gunn element
- Type of paper
: Paper in proceedings
Title: Probability Distributions of Interferences Caused by
Intermodulation in the Receiver
- Authors:
- Zentner, Ervin
- Bartolić, Juraj (2316)
Proceedings title: Zbornik 34. Simpozija ELMAR
Language: hrvatski
Place: Zadar
Year: 1992
ISBN/ISSN: 86-80139-0107
Pages: from 154 to 157
Meeting: 34. Međunarodni Simpozij ELMAR
Held: from 09/28/92 to 09/30/92
Keywords: Intermodulation, Probability distributions of interferences
- Type of paper
: Paper in proceedings
Title: Microstrip Patch Antenna Design
- Authors:
- Šipuš, Zvonimir
- Bartolić, Juraj (2316)
- Stipetić, Boris
Proceedings title: Zbornik 34. Simpozija ELMAR
Language: hrvatski
Place: Zadar
Year: 1992
ISBN/ISSN: 86-80139-0107
Pages: from 149 to 153
Meeting: 34. Međunarodni Simpozij ELMAR
Held: from 09/28/92 to 09/30/92
Keywords: Microstrip antennas, Numerical modelling
- Type of paper
: Paper in proceedings
Title: Nonlinear Distorsion Estimations of Waekly Nonlinear
Systems
- Authors:
- Nađ, Robert
Proceedings title: Zbornik 34. Simpozija ELMAR
Language: hrvatski
Place: Zadar
Year: 1992
ISBN/ISSN: 86-80139-0107
Pages: from 227 to 231
Meeting: 34. Međunarodni Simpozij ELMAR
Held: from 09/28/92 to 09/30/92
Keywords: Small signal amplifier, Weak nonlinearity, Intermodulation distorsion, Volterra series
- Type of paper
: Paper in proceedings
Title: An Electromagnetic Interference Measurement between
Satellite and Terrestrial Radiocommunication
- Authors:
- Hrabar, Silvio
Proceedings title: Zbornik 34. Simpozija ELMAR
Language: hrvatski
Place: Zadar
Year: 1992
ISBN/ISSN: 86-80139-0107
Pages: from 99 to 103
Meeting: 34. Međunarodni Simpozij ELMAR
Held: from 09/28/92 to 09/30/92
Keywords: Electromagnetic interference, Radiocommunications, Satellite communications
- Type of paper
: Paper in proceedings
Title: Dipole Array Imput Impedance Synthesis
- Authors:
- Habulin, Siniša
Proceedings title: Zbornik 34. Simpozija ELMAR
Language: hrvatski
Place: Zadar
Year: 1992
ISBN/ISSN: 86-80138-0107
Pages: from 179 to 184
Meeting: 34. Međunarodni Simpozij ELMAR
Held: from 09/28/92 to 09/30/92
Keywords: Antenna arrays, Dipole
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Šipuš, Zvonimir
- Bartolić, Juraj (2316)
- Stipetić, Boris
Proceedings title: Proceedings COST 223-ESA Workshop on Active Antennas
Language: engleski
Place: Noordwijk, NL
Year: 1992
Pages: from 351 to 358
Meeting: COST 233 - ESA Workshop on Active Antennas
Held: from 06/11/92 to 06/12/92
Keywords: Microstrip antenna, Antenna arrays
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bartolić, Juraj (2316)
Proceedings title: Zbornik radova 38. konferencije KoREMA
Language: engleski
Place: Zagreb
Year: 1993
ISBN/ISSN: 953-6037-00-9
Pages: from 47 to 50
Meeting: 36. Međunarodni Simpozij ELMAR
Held: from 04/26/93 to 04/28/93
Keywords: Mixers, Diode mixers, Microstrip mixers
- Type of paper
: Paper in proceedings
Title: Determining of the Optimal Common Electrode and the
Feedback for the Negative Resistance Oscillator
- Authors:
- Bartolić, Juraj (2316)
- Urh, Zoran
Proceedings title: Zbornik radova 38. konferencije KoREMA
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 953-6037-00-9
Pages: from 42 to 46
Meeting: 36. Međunarodni Simpozij ELMAR
Held: from 04/26/93 to 04/28/93
Summary: In this article one of the possible methods in the analysis
or the projecting of the oscillators is exposed. The starting point of this
method is the transistor, the three-port element. The following step is
determining of the common electrode, stating the transistor on two-port
element, respectively. By adding the feedback the unit develops into
one-port unit of elements, oscillator. Such analysis needs many
calculations with complex numbers. Quick transformation of S-parameters
from the common-emitter configuration in the common-base or
common-collector configuration is enabled by the usage of the computer. The
adding of the feedback and input and output matching networks is also
possible. This method is used in the construction of the negative
resistance oscillators. The analysis of greater number of transistors
results derives the conclusions about the optimal common electrode and the
feedback for that type of oscillators.
Keywords: Negative resistance oscillator, Feedback
- Type of paper
: Paper in proceedings
Title: Modern Methods for Solving Electromagnetic Compatibility
Problems in Radiocommunication Systems
- Authors:
- Zentner, Ervin
Proceedings title: Zbornik radova 38. konferencije KoREMA
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 953-6037-00-9
Pages: from 13 to 17
Meeting: 36. Međunarodni Simpozij ELMAR
Held: from 04/26/93 to 04/28/93
Summary: The organisation of radiochannel management is presented.
Described is the general approach to solve EMC problems. The origin and
effects of non-typical interference sources are analyzed. The measurement
with TEM cell in plane wave conditions is discussed.
Keywords: Radiocommunication systems, Electromagnetic compatibility
- Type of paper
: Paper in proceedings
Title: Intermodulation Distorsion Estimation of Small Signal
Amplifiers
- Authors:
- Nađ, Robert
Proceedings title: Zbornik radova 38. konferencije KoREMA
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 953-6037-00-9
Pages: from 38 to 41
Meeting: 36. Međunarodni Simpozij ELMAR
Held: from 04/26/93 to 04/28/93
Keywords: Intermodulation distorsion, Small signal amplifier, Weak nonlinearity
- Type of paper
: Paper in proceedings
Title: A Numerical Solution for the Excess Capacitance and
Inductance of a Compensated Microstrip Step Discontinuity
- Authors:
- Božiković, Aljoša
Proceedings title: Zbornik radova 38. konferencije KoREMA
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 953-6037-00-9
Pages: from 31 to 34
Meeting: 36. Međunarodni Simpozij ELMAR
Held: from 04/26/93 to 04/28/93
Keywords: Microstrip, Step discontinuity
- Type of paper
: Paper in proceedings
Title: Radiation Pattern of Rectangular Patch Microstrip Array
- Authors:
- Šipuš, Zvonimir
- Dubček, Pavo
- Stipetić, Boris
Proceedings title: Zbornik radova 38. konferencije KoREMA
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 953-6037-00-9
Pages: from 63 to 66
Meeting: 36. Međunarodni Simpozij ELMAR
Held: from 04/26/93 to 04/28/93
Keywords: Antenna, Microstrip antenna, Antenna array, Radiation pattern
- Type of paper
: Paper in proceedings
Title: Step Discontinuity in Microstrip
- Authors:
- Stipetić, Boris
Proceedings title: Zbornik radova 38. konferencije KoREMA
Language: engleski
Place: Zagreb
Year: 1993
ISBN/ISSN: 953-6037-00-9
Pages: from 35 to 37
Meeting: 36. Međunarodni Simpozij ELMAR
Held: from 04/26/93 to 04/28/93
Keywords: Microstrip, Step discontinuity
- Type of paper
: Paper in proceedings
Title: Multimode Cavity Model -The Analysis Technique of
Microvawe Planar Antennas
- Authors:
- Miletić, Alenka
Proceedings title: Zbornik 38. konferencije KoREMA
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 953-6037-00-9
Pages: from 67 to 70
Meeting: 36. Međunarodni Simpozij ELMAR
Held: from 04/26/93 to 04/28/93
Keywords: Microstrip antenna, Cavity model
- Type of paper
: Paper in proceedings
Title: Dipole Array Modelling
- Authors:
- Habulin, Siniša
Proceedings title: Zbornik radova 38. konferencije KoREMA
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 953-6037-00-9
Pages: from 71 to 75
Meeting: 36. Međunarodni Simpozij ELMAR
Held: from 04/26/93 to 04/28/93
Keywords: Antenna array, Dipole
- Type of paper
: Paper in proceedings
Title: Noise Temperature and Conversion Loss of Microwave Diode
Mixer
- Authors:
- Bartolić, Juraj (2316)
Proceedings title: Zbornik 35. Simpozija ELMAR
Language: hrvatski
Place: Zadar
Year: 1993
ISBN/ISSN: 1330-092X
Pages: from 189 to 192
Meeting: 35. Međunarodni Simpozij ELMAR
Held: from 09/24/93 to 09/26/93
Summary: In the paper the noise temperature anaysis of Schottky
diode microwave mixer is presented. It is shown how the terminating
impedances at particular mixing frequencies
influence the basic characteristics of the mixer.
Keywords: Microwave mixer, Noise temperature, Conversion loss
- Type of paper
: Paper in proceedings
Title: EMC Figure of Merit Estimation for Two Radar Systems
- Authors:
- Zentner, Ervin
Proceedings title: Zbornik 35. Simpozija ELMAR
Language: hrvatski
Place: Zadar
Year: 1993
ISBN/ISSN: 1330-092X
Pages: from 83 to 86
Meeting: 35. Međunarodni Simpozij ELMAR
Held: from 09/24/93 to 09/26/93
Keywords: Radar, Radar system, Electromagnetic compatibility
- Type of paper
: Paper in proceedings
Title: Nonlinear Distorsion Analysis of Feedback Amplifiers Using
Volterra Series Representation
- Authors:
- Nađ, Robert
Proceedings title: Zbornik 35. Simpozija ELMAR
Language: engleski
Place: Zadar
Year: 1993
ISBN/ISSN: 1330-092X
Pages: from 176 to 179
Meeting: 35. Međunarodni Simpozij ELMAR
Held: from 09/24/93 to 09/26/93
Keywords: Transistor amplifier, Nonlinear analysis, Volterra series
- Type of paper
: Paper in proceedings
Title: Some Considerationa about Microstrip Antenna Analysis by
Means of Moment Method Procedure
- Authors:
- Šipuš, Zvonimir
- Milin, Željka
- Dubček, Pavo
Proceedings title: Zbornik 35. Simpozija ELMAR
Language: hrvatski
Place: Zadar
Year: 1993
ISBN/ISSN: 1330-092X
Pages: from 184 to 188
Meeting: 35. Međunarodni Simpozij ELMAR
Held: from 09/24/93 to 09/26/93
Keywords: Microstrip antennas, Numerical modelling, Moment method
- Type of paper
: Paper in proceedings
Title: Measurements of Faint Radiofrequency Siganls Using
Spectrum Analyzer
- Authors:
- Hrabar, Silvio
Proceedings title: Zbornik 35. Simpozija ELMAR
Language: hrvatski
Place: Zadar
Year: 1993
ISBN/ISSN: 1330-092X
Pages: from 78 to 82
Meeting: 35. Međunarodni Simpozij ELMAR
Held: from 09/24/93 to 09/26/93
Keywords: Microwave measurements, Spectrum analyzer
- Type of paper
: Paper in proceedings
Title: Resonant Techniques for Measurement of Microstrip
Discontinuity
- Authors:
- Stipetić, Boris
Proceedings title: Zbornik 35. Simpozija ELMAR
Language: hrvatski
Place: Zadar
Year: 1993
ISBN/ISSN: 1330-092X
Pages: from 180 to 183
Meeting: 35. Međunarodni Simpozij ELMAR
Held: from 09/24/93 to 09/26/93
Keywords: Microstrip, Resonant measurement techniques, Discontinuity
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
Proceedings title: Proceedings of the Fourth International Symposium on New Technologies, Part II
Language: engleski
Place: Pula
Year: 1993
ISBN/ISSN: 86-81997
Pages: from 84 to 87
Meeting: Fourth International Symposium on New Technologies
Held: from 10/25/93 to 10/27/93
Summary: This paper describes the results of research and
development in the area of advanced antenna technology being pursued
at the Institute for High Frequency Techniques. Basic concept and
technology of active antenna composed of Gunn diodes and
rectangular patches are presented. Using quasi-optical combining technique
a simple active array of two Gunn-patch elements on
glass cloth reinforced PTFE substrate was realized. Co-polar and
cross-polar radiation patterns, ERP, and power combining and
phase locking properties have been measured. ERP of 96 mW with 25 mW diode
at the frequency of oscillation 11.7 GHz is obtained.
Second harmonic content is more then 40 dB below the principal radiation.
Injection locking technique was used to improve short-term and long-term
stability of the oscillating array. Experiments demonstrate feasibility of
the oscillating antenna concept in transmitting active arrays and
quasi-optical microwave/millimeter-wave power combiners.
Keywords: Microstrip antennas, Active antennas, Active antenna arrays
- Type of paper
: Paper in proceedings
Title: Electromagnetic Compatibility Testing with TEM Cells
- Authors:
- Zentner, Ervin
Proceedings title: Proceedings of the Fourth International Symposium on New Technologies, Part II
Language: hrvatski
Place: Pula
Year: 1993
ISBN/ISSN: 86-81997
Pages: from 79 to 83
Meeting: Fourth International Symposium on New Technologies
Held: from 10/25/93 to 10/27/93
Summary: The preference of measurement with TEM-cells in relation to
remainder methods are shown, special for radiation interference source
measurements and susceptibility testing. Electric and magnetic field
measurement methods and examples are demonstrated. Measuring methods and
results of impedance and transfer characteristic measurements on a TEM cell
are presented.
Keywords: Electromagnetic compatibility, TEM cell
- Type of paper
: Paper in proceedings
Title: Nonlinear Incremental Model for Bipolar Junction
Transistor
- Authors:
- Nađ, Robert
Proceedings title: Proceedings of the Fourth International Symposium on New Technologies, Part I
Language: hrvatski
Place: Pula
Year: 1993
ISBN/ISSN: 86-81997
Pages: from 177 to 180
Meeting: Fourth International Symposium on New Technologies
Held: from 10/25/93 to 10/27/93
Keywords: Bipolar junction transistor model, Intermodulation distorsion, Volterra series, Nonlinear incremental model
- Type of paper
: Paper in proceedings
Title: Computer Aided Design of Microstrip Structures
- Authors:
- Šipuš, Zvonimir
- Bartolić, Juraj (2316)
Proceedings title: Proceedings of the Fourth International Symposium on New Technologies, Part II
Language: hrvatski
Place: Pula
Year: 1993
ISBN/ISSN: 86-81997
Pages: from 120 to 123
Meeting: Fourth International Symposium on New Technologies
Held: from 10/25/93 to 10/27/93
Keywords: Microstrip antennas, Computer aided design
- Type of paper
: Paper in proceedings
Title: Analysis of the Circular Microstrip Disk Antenna Using the
Cavity Method
- Authors:
- Bonefačić, Davor
Proceedings title: Proceedings of the Fourth International Symposium on New Technologies, Part II
Language: hrvatski
Place: Pula
Year: 1993
ISBN/ISSN: 86-81997
Pages: from 88 to 91
Meeting: Fourth International Symposium on New Technologies
Held: from 10/25/93 to 10/27/93
Keywords: Microstrip antenna, Circular disk microstrip antenna, Cavity model
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
- Bonefačić, Davor
Proceedings title: Zbornik radova / Proceedings MEET '94
Language: engleski
Place: Rijeka
Year: 1994
ISBN/ISSN: 953-6042-03-0
Pages: from 2-136 to 2-140
Meeting: Mikroelektronika, elektronika i elektroničke tehnologije
Held: from 05/25/94 to 05/26/94
Summary: ABSTRACT: The results of research and development in the
area of
active antenna technology have been presented. The applicability
of a modified rectangular microstrip patch radiator for active
antenna using one-port active element has been demonstrated. The
modified rectangular patch antenna (40x25 mm2), designed for the
operating frequency of 3.4 GHz, was manufactured and tested. The
invertor line was placed inside the rectangular hollow in the
central part of the patch. Two active patch elements (8x12 mm2)
for the 10.6 GHz frequency were realized. Co-polar and cross-
polar radiation patterns, spectral purity and effective
isotropically radiated power (EIRP) have been measured. Using
quasi-optical combining technique a simple active array of two
Gunn-patch elements on glass cloth reinforced PTFE substrate has
been realized. Experiments demonstrate feasibility of the
oscillating antenna concept in transmitting active arrays and
quasi-optical microwave/ millimeter-wave power combiners. The
circuit should have many applications in low cost transmitters
and quasi-optical power combiners.
- Type of paper
: Paper in proceedings
Title: Effect of RF amplifier load impedance on intermodulation
distortion
- Authors:
- Nađ, Robert
Proceedings title: Proceedings of the 39th Conference KoREMA
Language: hrvatski
Place: Zagreb
Year: 1994
ISBN/ISSN: 953-6037-02-5
Pages: from 35 to 38
Meeting: 39. godišnji skup KoREMA
Held: from 04/25/94 to 04/27/94
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Hrabar, Silvio
- Kavran, Zvonko
Proceedings title: Proceedings of the 39th Conference KoREMA
Language: engleski
Place: Zagreb
Year: 1994
ISBN/ISSN: 953-6037-02-5
Pages: from 39 to 42
Meeting: 39. godišnji skup KoREMA
Held: from 04/25/94 to 04/27/94
- Type of paper
: Paper in proceedings
Title: Input impedance calculation of rectangular patch antenna
fed by microstrip line
- Authors:
- Šipuš, Zvonimir
Proceedings title: Proceedings of the 39th Conference KoREMA
Language: hrvatski
Place: Zagreb
Year: 1994
ISBN/ISSN: 953-6037-02-5
Pages: from 51 to 54
Meeting: 39. godišnji skup KoREMA
Held: from 04/25/94 to 04/27/94
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bonefačić, Davor
- Šipuš, Zvonimir
Proceedings title: Proceedings of the 39th Conference KoREMA
Language: engleski
Place: Zagreb
Year: 1994
ISBN/ISSN: 953-6037-02-5
Pages: from 55 to 58
Meeting: 39. godišnji skup KoREMA
Held: from 04/25/94 to 04/27/94
- Type of paper
: Paper in proceedings
Title: Input impedance analysis of microstrip antennas
- Authors:
- Šipuš, Zvonimir
- Bartolić, Juraj (2316)
- Bonefačić, Davor
- Tomek, Miroslav
Proceedings title: Proceedings of the 36th International Symposium ELMAR '94
Language: hrvatski
Place: Zadar
Year: 1994
ISBN/ISSN: 1330-092X
Pages: from 200 to 203
Meeting: 36. Međunarodni Simpozij ELMAR
Held: from 09/12/94 to 09/14/94
Summary: The paper deals with the input impedance calculation of
microstrip antennas by means of the dyadic Green's functions and the moment
method procedure. The properties of two sorts of basis functions, the
entire-domain and the sub-domain basis functions, are shown. The design
procedure of an active receiving rectangular patch antenna is given as an
example.
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
- Bonefačić, Davor
- Zentner, Ervin
Proceedings title: Proceedings of the 24th European Microwave Conference
Language: engleski
Place: Cannes, F
Year: 1994
ISBN/ISSN: 0951803255
Pages: from 1779 to 1784
Meeting: 24th European Microwave Conference
Held: from 09/05/94 to 09/08/94
Summary: The applicability of a modified rectangular microstrip
patch radiator for active antenna with one-port active element has been
demonstrated. The modified rectangular patch antenna, designed for the
operating frequency of 3.4 GHz, was manufactured and tested. The inverter
line was placed inside the rectangular opening in the central part of the
patch. The active patch element for the 9.1 GHz frequency was realized.
Co-polar and cross-polar radiation patterns, spectral purity and EIRP have
been measured. Oscillating antenna using modified patch showed a higher
spectral purity and substantially lower cross-polar levels in comparism
with the active patch antenna realized with unmodified rectangular patch.
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bartolić, Juraj (2316)
- Sanford, John
- Šipuš, Zvonimir
- Bonefačić, Davor
Proceedings title: Proceedings of the 40th anniversary conference KoREMA
Language: engleski
Place: Zagreb
ISBN/ISSN: 953-6037-08-4
Pages: from 27 to 30
Meeting: 40. godišnji skup KoREMA
Held: from 04/19/95 to 04/21/95
Summary: An active antenna composed of Gunn diode with rectangular
patch for quasi-optical power combining arrays is described. The patch is
modified to improve cross-polarisation patterns and to perform VCO
capabilities. Patch parameters are optimized by using a moment method
procedure. An active antenna for 9.85 GHz range is realized. A tuning range
of more than 300 MHz at 9.85 GHz and EIRP of 208 mW are obtained by single
path antenna. Low levels of cross-polarisation are observed. Injection
locking of the oscillating antenna is investigated. A locking range of 6.7
MHz is obtained at 9.9 GHz. Good agreement between theoretically predicted
and experimental results is obtained.
- Type of paper
: Paper in proceedings
Title: Designing of wideband amplifiers with lossless feedback
- Authors:
- Nađ, Robert
- Polić, Igor
Proceedings title: Proceedings of the 40th anniversary conference KoREMA
Language: engleski
Place: Zagreb
Year: 1995
ISBN/ISSN: 953-6037-08-4
Pages: from 39 to 42
Meeting: 40. godišnji skup KoREMA
Held: from 04/19/95 to 04/21/95
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Plahutar, Vesna
- Nađ, Robert
Proceedings title: Proceedings of the 40th anniversary conference KoREMA
Language: engleski
Place: Zagreb
Year: 1995
ISBN/ISSN: 953-6037-08-4
Pages: from 43 to 46
Meeting: 40. godišnji skup KoREMA
Held: from 04/19/95 to 04/21/95
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Hrabar, Silvio
- Babić, Nenad
- Tičinović, Mario
Proceedings title: Proceedings of the 40th anniversary conference KoREMA
Language: engleski
Place: Zagreb
Year: 1995
ISBN/ISSN: 953-6037-08-4
Pages: from 47 to 50
Meeting: 40. godišnji skup KoREMA
Held: from 04/19/95 to 04/21/95
Summary: In this article reflection coefficient measurement error
for three-probe reflectometer is analyzed. By computer simulation, which
uses Ghannouchi and Bossisio's worst case method, the influence of power
measurement error, probe locatiions, reference coupler directivity,
attenuator value and probe coupling on useful reflectometer frequency
bandwidth has been investigated. Using simulation results, useful frequency
bandwidth for the reflectometer with parameters which can be found in
practice, was estimated.
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Zentner, Radovan (900827)
- Bartolić, Juraj (2316)
Proceedings title: Proceedings of the 40th anniversary conference KoREMA
Language: engleski
Place: Zagreb
Year: 1995
ISBN/ISSN: 953-6037-08-4
Pages: from 31 to 34
Meeting: 40. godišnji skup KoREMA
Held: from 04/19/95 to 04/21/95
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Šipuš, Zvonimir
- Kildal, Per-Simon
- Salomonsson, Johan
Proceedings title: Proc. of the IEEE Antenna and Propagation Society Int. Symposium 1995, vol. 2
Language: engleski
Place: Newport Beach CA, USA
Year: 1995
ISBN/ISSN: 0-7803-2719-5
Pages: from 814 to 817
Meeting: ICEAA '95 International Confernce on Electromagnetics in Advanced Applications
Held: from 06/18/95 to 06/23/95
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Sanford, John
- Šipuš, Zvonimir
Proceedings title: Proc. of the IEEE Antennas and Propagation Int. Symposium 1995, vol. 1
Language: engleski
Place: Newport Beach CA, USA
Year: 1995
ISBN/ISSN: 0-7803-2719-5
Pages: from 670 to 673
Meeting: ICEAA '95 International Confernce on Electromagnetics in Advanced Applications
Held: from 06/18/95 to 06/23/95
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bartolić, Juraj (2316)
- Sanford, John
- Šipuš, Zvonimir
- Bonefačić, Davor
Proceedings title: Proceedings of the 25th European Microwave Conference, Pt.1
Language: engleski
Place: Bologna, I
Year: 1995
ISBN/ISSN: 1-899919-15-5
Pages: from 316 to 319
Meeting: 25th European Microwave Conference
Held: from 09/04/95 to 09/07/95
Summary: ABSTRACT
An active rectangular microstrip patch antenna for quasi-optical
power combining arrays is hereby described. Part of the patch
metallization was removed to form a rectangular opening where a
Gunn diode was placed. This modification lowered the Q and
allowed the oscillating patch to perform VCO capabilities. Patch
parameters were optimized using a moment method procedure. A
tuning range of more than 300 MHz at 9.85 GHz and EIRP of 208 mW
was obtained. A clear spectrum with no spurious components of the
free running oscillating antenna was observed. Injection locking
experiments were performed. At 9 V bias, a locking gain of 40.9
dB with locking bandwidth of 5.9 MHz was obtained. Radiation
patterns in E and H plane were measured. Low levels of cross-
polarisation were observed.
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Zentner, Radovan (900827)
- Bartolić, Juraj (2316)
- Zentner, Ervin
Proceedings title: Proc. of the Int. Conference on Electromagnetics in Advanced Applicat. ICEAA '95
Language: engleski
Place: Torino, I
Year: 1995
Pages: from 27 to 30
Meeting: ICEAA '95 International Confernce on Electromagnetics in Advanced Applications
Held: from 09/12/95 to 09/15/95
Summary: A procedure of adding a parasitic patch element over a
driven rectangular patch in order to achieve an increased bandwidth of
microstrip antennas has been considered. Comprehensive measurements were
carried out and enabled one to determine the influence of a separation
distance between the parasitic and the driven patch on the input impedance
locus. The matching network consisting of a single line transformer was
derived and its parameters computed for the antenna with optimized
separation distance between the driven and parasitic patches. The achieved
relative bandwidth is about 30% with VSWR lower or equal to 2.
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bonefačić, Davor
- Šipuš, Zvonimir
- Bartolić, Juraj (2316)
Proceedings title: Proc. of the Int. Conference on Electromagnetics in Advanced Applicat. ICEAA '95
Language: engleski
Place: Torino, I
Year: 1995
Pages: from 189 to 192
Meeting: ICEAA '95 International Confernce on Electromagnetics in Advanced Applications
Held: from 09/12/95 to 09/15/95
Summary: A rectangular patch antenna with a Gunn diode integrated in
a rectangular opening in the patch is proposed as oscillating
antenna for spatial power combiners. This configuration gives a better
defined loading for the active device.
The overall Q of the antenna is reduced, thus allowing a wide band
frequency tuning by changing the bias voltage. Injection
locking properties are investigated throughout the tuning range. A
relatively wide locking range with a good locking gain
is achieved.
Keywords: microstrip antenna, active antenna, injection locking, Gunn-diode, oscillator, quasi-optical power combining, microwaves
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bonefačić, Davor
- Zentner, Radovan (900827)
- Bartolić, Juraj (2316)
Proceedings title: Proceedings of the 37th ELMAR International Symposium
Language: engleski
Place: Pula
Year: 1995
ISBN/ISSN: 1330-092X
Pages: from 141 to 144
Meeting: 37th ELMAR International Symposium
Held: from 09/18/95 to 09/20/95
Summary: An experimental investigation on stacked circular patches
was performed. he influence of the electromagnetically coupled radiator on
the input impedance and the radiation patterns was investigated. Two cases
of excitation were observed. The lower patch was in the first case excited
with a coaxial line, and in the second with a microstrip line on the edge.
A significant increase in input impedance bandwidth and a possibility of
wide band input impedance matching was observed.
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Zentner, Radovan (900827)
- Bartolić, Juraj (2316)
Proceedings title: Proceedings of the 37th ELMAR International Symposium
Language: engleski
Place: Pula
Year: 1995
ISBN/ISSN: 1330-092X
Pages: from 195 to 198
Meeting: 37th ELMAR International Symposium
Held: from 09/18/95 to 09/20/95
Summary: A method for finding optimal dimensions of the line
transformer to match an arbitray load to an arbitrary real impedance is
described. The procedure takes into account the frequency dependence of the
impedance to be matched and optimizes transformer length to obtain maximum
bandwidth. It is shown how to find an optimal transformer for a load, using
its previously measured input impedance data. The restrictions of such a
matching are given. The area in the Smith chart, in which the load cannot
be matched is determined.
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Šipuš, Zvonimir
- Bartolić, Juraj (2316)
- Bonefačić, Davor
Proceedings title: Proceedings of COST-245 Active Antenna Workshop
Language: engleski
Place: St. Gallen, Švicarska
Year: 1994
Meeting: COST 245 Active Antenna Workshop
Held: from 02/23/94 to 02/25/94
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
- Bonefačić, Davor
Proceedings title: Minutes of the COST 245 WG3 Meeting and Workshop
Language: engleski
Place: Lyngby, DK
Year: 1994
Meeting: COST 245 WG3 Meeting and Workshop
Held: from 06/08/94 to 06/10/94
- Type of paper
: Ph.D.
Title: A Contribution to the Characterisation of the Step
Discontinuity in Microstrip
Faculty: Elektrotehnički fakultet Sveučilište u Zagrebu
Author: BOŽIKOVIĆ ALJOŠA
Date of defense: 02/28/92
Language: hrvatski
Number of pages: 142
Summary: A numerical solution for the excess capacitance and
inductance ofa microstrip step discontinuity is obtained by the method
ofmoments. This dicontinuity is a via between two
semi-infiniteinfinitesimally thin perfectly conducting strips. Above a
groundplane, these strips are immersed in a medium that has
constantpermeability. The S-parameters of a microstrip step
discontinuityare calculated using a waveguide model and a mode
matchingmethod. The resuling infinite set of equations is truncated
andsolved numerically.
Keywords: Microstrip, Step discontinuity in microstrip, Numerical methods
- Type of paper
: Ph.D.
Title: The Impact of the Passive Network of the Small Signal
Semiconductor Amplifier on Its Operating Conditions in a Given Range of
Amplitudes and Frequencies
Faculty: Elektrotehnički fakultet Sveučilište u Zagrebu
Author: NAĐ ROBERT
Date of defense: 10/29/93
Language: hrvatski
Number of pages: 147
Summary: The purpose of the research was the analysis of
theinteraction of a semiconductor amplifiers coupling network tothe linear
and nonlinear distortion in the circuits forradiocommunication systems.
Analysis was primarily concerned tothe systems with weak nonlinearities
using mathematical modelwith memory ability analysis. The response of
memory systems aredepending not only of instantaneous excitation, but also
ofexcitations which have been existed before this time on the inputof the
system as well. This problem, and the problem of generalexcitation
(excitation function of the general shape including
excitation by noise) was treated by application of Volterrafunctionals. It
has been shown that such a mathematical approachrepresent in fact
generalization of system impulse response-
convolution integral. Because such a mathematical approach wasnot usually
used in classical intermodulation distortion analysisin radiocommunication
circuits, chapters three and four aredealing with introduction to Volterra
series application in thefield of nonlinear transfer function determination
for someparticular series.
Starting point in the analysis was development of thelinear and
nonlinear model of active element. Measured results ofactive elements and
of realized circuit was used in the analysisas well. According to the fact
that analysis was applied in thelower microwave band (below 1 GHz), bipolar
transistor as activeelement was chosen.
Firstly, linear small signal model was realized, and thenthe analysis
was extended to nonlinear model of bipolartransistor. Results of such an
approach was more accurate
model for frequency band below 1 GHz, in comparison to theliterature.
Measured scattering parameters were the basis for themodelling. Nonlinear
model of bipolar transistor consist of fournonlinear elements: exponential
emitter nonlinearity connected tothe base-emitter barrier dynamic
resistance, diffusioncapacitance of the same barrier, collector-base
barriercapacitance, and collector nonlinear current source.
The last one include also avalanche breakdownnonlinearities. Passive
components modelling was also necessarybecause of better accuracy of the
selective amplifier model.
This model is the first one which contain all mentionednonlinearities.
Frequency characteristics of the model andmeasured realized circuits were
compared, and results are
in satisfactorily correspondence. Distortion measurements wereperformed as
a function of frequency and of load impedances.Analysis of simulation and
measurements results was the
relation between third-order and second-order distortion. In theliterature
such an explicit relationship can not be found for thebipolar transistor
amplifier.
Theoretical model was compared with experimental circuit.The measured
data are in a good correspondence with calculationresults. On the basis of
applied analysis it is possible tominimize influence of the second and
third harmonic components ifthe dependence of the source and load impedance
on thefundamental frequency and frequency of second harmonic is known.
Keywords: Small signal amplifier, Weak nonlinearity, Intermodulation distorsions, Volterra series, Bipolar junction transistor model, Nonlinear incremental model
- Type of paper
: M.A.
Title: Microwave Six-port Network Analyzer
Faculty: Elektrotehnički fakultet Sveučilište u Zagrebu
Author: HRABAR SILVIO
Date of defense: 04/25/91
Language: hrvatski
Number of pages: 175
Summary: The work covers techniqes of scattering parameters
measurements.Theoretical background of six-port network analyzer is
given,demands on the components of the measuring system are analyzed,and
the appropriate cicruit solutions are given. For experimentalresearch, the
reflectometer consisting of the symmetrical fiveport and directional
coupler is chosen. Two methods forbroadening frequency band of the hybrid
are used. By addingSchottky diode detectors, A/D converter, and by
connecting to thepersonal computer, the experimental single six-port
networkanalyzer has been realized. Results of the measurements of
theunknown reflection coefficient are given, and compared by thosefrom
computer simulation.
Keywords: Microwave measurements, Scattering parameters measurement, Network analysis, Six-port network analizer
- Type of paper
: M.A.
Title: Green Functions for Microstrip Structures and their
Application in the Analysis of Microstrip Antennas
Faculty: Elektrotehnički fakultet Sveučilište u Zagrebu
Author: ŠIPUŠ ZVONIMIR
Date of defense: 06/28/91
Language: hrvatski
Number of pages: 123
Summary: The aim of this work is to describe the Green functions of
thegrounded dielectric slab and their use in the analysis ofmicrostrip
antennas by means of the moment method procedure. Inthe first part the
Green functions are described. The theory ofdistributions is introduced and
properties of Helmholtz'sequation are given. The Green functions of the
groundeddielectric slab are calculated in detail. They are given in
spaceand spectral domain. Surface waves are also considered. Spectraldomain
Green functions for multilayer dielectric substrates areevaluated via
transmission line analogy. The use of Greenfunctions in the analysis of
microstrip antennas is given in thesecond part. The theory of moment
methods is developed as anumerical method for solving integro-differential
equations.Moment method procedure is used in the analysis of
microstripantennas. The comparison between calculated and measured
resultsis made for rectangular patches. The analysis of infinite
phasedarrays of microstrip patches is given and the comparison withfinite
prased arrays of rectangular patches is made.
Keywords: Microstrip technology, Green functions, Numerical modelling, Microstrip antennas
- Type of paper
: Mentorship
Title: Synthesis of a Microwave Oscillator with a Dielectric
Resonator
Faculty: Elektrotehnički fakultet Sveučilište u Zagrebu
Mentor: ZENTNER ERVIN
Date of defense: 02/28/92
Number of pages: 87
Author: Ahmić dipl. ing. Rusmir
Degree level: M.A.
- Type of paper
: Mentorship
Title: Dielectric and Feromagnetic Microwave Resonators
Faculty: Elektrotehnički fakultet Sveučilište u Zagrebu
Mentor: BARTOLIĆ JURAJ
Date of defense: 03/29/91
Number of pages: 255
Author: Bosnjai dipl.ing. Gabor
Degree level: M.A.
- Type of paper
: Mentorship
Title: Voltage Controled Microwave Oscillator with Buffer
Amplifier
Faculty: Elektrotehnički fakultet Sveučilište u Zagrebu
Mentor: BARTOLIĆ JURAJ
Date of defense: 03/29/91
Number of pages: 89
Author: Šiplika Mr. Ištvan
Degree level: M.A.
- Type of paper
: Mentorship
Title: Electronically Controled Microwave Oscillator
Faculty: Elektrotehnički fakultet Sveučilište u Zagrebu
Mentor: BARTOLIĆ JURAJ
Date of defense: 02/23/93
Number of pages: 157
Author: Urh Mr. Zoran
Degree level: M.A.
- Type of paper
: Mentorship
Title: Rectangular Microstrip Patch Antennas
Faculty: Elektrotehnički fakultet Sveučilište u Zagrebu
Mentor: BARTOLIĆ JURAJ
Date of defense: 06/25/92
Number of pages: 165
Author: Miletić dipl. inž. Alenka
Degree level: M.A.
- Type of paper
: Technical report
Title:
- Authors:
- Bartolić, Juraj (2316)
- Šipuš, Zvonimir
Ordering party: COST 223
Institution depot: COST Telecommunications Secretariat, CEC DG XIII/B
Year: 1992
Number of pages: 8
Language: engleski
- Type of paper
: Invited lecture
Title: Development of Stacked Patch and Active Patch Antennas
Institution: Chalmers University of Technology
Year: 1995
- Type of paper
: Other
Title: Green's Functions for Microstrip Structures
- Authors:
- Šipuš, Zvonimir
Type of work: Znanstveni kolokvij
Language: hrvatski
- Type of paper
: Other
Title: Application of the Moment Method in the Theory of
Electromagnetic Radiation
- Authors:
- Šipuš, Zvonimir
Type of work: Seminarski rad, interna publikacija Zavoda za visokofrekventnu tehniku, ETF, ZG
Language: hrvatski
- Type of paper
: Other
Title:
- Authors:
- Nađ, Robert
Type of work: Znanstveni kolokvij
Language: hrvatski
- Type of paper
: Other
Title:
- Authors:
- Habulin, Siniša
Type of work: Znanstveni kolokvij
Language: hrvatski
- Type of paper
: Other
Title: Some Considerations on the Application of the Moment
Method in the Analysis of Microstrip Antennas
- Authors:
- Šipuš, Zvonimir
Type of work: Znanstveni kolokvij
Language: hrvatski
