Jerzy F Mazur - Academia.edu (original) (raw)

Papers by Jerzy F Mazur

Research paper thumbnail of Nonreciprocal Distributed Structures using Coupled Ferrite Lines with Vertical Magnetization

19th European Microwave Conference, 1989, 1989

New configurations of nonreciprocal devices with vertical magnetization are investigated. The str... more New configurations of nonreciprocal devices with vertical magnetization are investigated. The structures proposed base on a new distributed phenomenon consisting in the nonreciprocal response to the even or odd mode excitation of the identical coupled ferrite lines with vertical magnetization (CFLT). The scattering matrix of a section of CFLT is derived and used to model the transmission characteristics of possible 4 and 3 port circulators and an isolator. Since the new effect occurs even for weakly magnetized ferrites the novel structures are particularly suitable for millimetre wave applications.

Research paper thumbnail of Field displacement phenomenon in a rectangular waveguide containing a thin plate of Ω medium

IEEE Microwave and Guided Wave Letters, 1996

An analysis of the wave propagation in a rectangular waveguide containing pseudochiral R slab is ... more An analysis of the wave propagation in a rectangular waveguide containing pseudochiral R slab is presented in this letter. Approximate continuity conditions modeling a thin R plate are introduced to simplify the analysis. The problem is solved by the mode-matching procedure. A notable field displacement phenomenon appearing in the guide owing the pseudochirality properties is studied. Other feature such as a weak perturbation of the dispersion characteristics of the isotropic guide by pseudochirality introduced into the medium is also discussed.

Research paper thumbnail of Field displacement phenomenon in a rectangular waveguide containing a thin plate of Ω medium

IEEE Microwave and Guided Wave Letters, 1996

An analysis of the wave propagation in a rectangular waveguide containing pseudochiral R slab is ... more An analysis of the wave propagation in a rectangular waveguide containing pseudochiral R slab is presented in this letter. Approximate continuity conditions modeling a thin R plate are introduced to simplify the analysis. The problem is solved by the mode-matching procedure. A notable field displacement phenomenon appearing in the guide owing the pseudochirality properties is studied. Other feature such as a weak perturbation of the dispersion characteristics of the isotropic guide by pseudochirality introduced into the medium is also discussed.

Research paper thumbnail of Propagation in Semiconductor Loaded Slot-Line with Perpendicular Induction

9th European Microwave Conference, 1979

Research paper thumbnail of Scattering in a section of rectangular waveguide with a pseudochiral Ω slab

13th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2000. Conference Proceedings (IEEE Cat. No.00EX428), 2000

ABSTRACT The mode matching approach is applied to a rectangular waveguide containing a pseudochir... more ABSTRACT The mode matching approach is applied to a rectangular waveguide containing a pseudochiral Ω slab. From waveguide measurements carried out over a few placements of the slab in the guide the constitutive parameters are extracted. The extraction is performed numerically by a algorithm minimizing the difference between theoretical and measured values of resonance frequency and scattering parameters. The field displacement phenomenon becomes visible by the frequency responses of the scattering parameters and E-field patterns. The measured and theoretical results show the resonance effects which may be applicable in design of bandstop filters

Research paper thumbnail of Experimental Investigations of Ferrite Phase Shifter Magnetized with Rotary Four-Pole Magnetic Fields

2006 International Conference on Microwaves, Radar & Wireless Communications, 2006

ABSTRACT The practical ferrite rotary field phase changer is designed and fabricated for low freq... more ABSTRACT The practical ferrite rotary field phase changer is designed and fabricated for low frequency by using a composite ferrite dielectric rod that allows to reduce diameter of a circular waveguide of phase shift section. Experimental results at 1.3 GHz agree well with ones predicted theoretically confirming the developed design procedure.

Research paper thumbnail of Polarization of a plane wave scattered by an array of cylinders

15th International Conference on Microwaves, Radar and Wireless Communications (IEEE Cat. No.04EX824), 2004

ABSTRACT The theory of TE- and TM-wave scattering by an array of conducting and dielectric cylind... more ABSTRACT The theory of TE- and TM-wave scattering by an array of conducting and dielectric cylinders is investigated using a combination of an iterative scattering procedure and the orthogonal expansion method. Polarization parameters of the scattered plane wave are derived in the near and the far fields.

Research paper thumbnail of Nonreciprocal Structures using Coupled Ferrite Lines Magnetized in the Propagation Direction

18th European Microwave Conference, 1988, 1988

Research paper thumbnail of Investigations of multilayer three-strip coplanar lines with the ferrite material

In this paper the investigations of a multilayer coplanar line consisting of three strips located... more In this paper the investigations of a multilayer coplanar line consisting of three strips located on a longitudinally magnetized ferrite are presented. In the analysis of proposed structure the coupled mode and mode matching methods are applied. Using proposed approach the ferrite coupled line junction is designed. For this junction the transmission parameters are calculated. The numerical results are verified via experiment.

Research paper thumbnail of Scattering by a set of pseudochiral cylinders

16th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2006, 2007

This paper presents the analysis of electromagnetic field scattering by a set of cylindrical obje... more This paper presents the analysis of electromagnetic field scattering by a set of cylindrical objects made of pseudochiral material located in rectangular waveguide junctions and free space. Presented approach is based on the Iterative Scattering Procedure (ISP) and the orthogonal expansion method. Several numerical examples for open and closed problems were presented.

Research paper thumbnail of Analysis of circular cavity with tunable combline resonator

15th Conference on Microwave Techniques COMITE 2010, 2010

ABSTRACT This paper presents the analysis of electromagnetic wave scattering by cylindrical objec... more ABSTRACT This paper presents the analysis of electromagnetic wave scattering by cylindrical object located in a circular resonator. The exact full-wave theory based on the mode-matching method is applied to analyze the structures. The resonance frequencies of the investigated resonators are accurately determined. Validity and accuracy of the approach is verified by comparing the results with alternative numerical methods and the author's experiment.

Research paper thumbnail of Complex Waves in Lossless Dielectric Waveguides

19th European Microwave Conference, 1989, 1989

Research paper thumbnail of Coplanar Waveguide-Fed Broadband Microwave Devices with (or without) a Thin Dielectric Substrate for Use in Flexible Electronic Systems

International Journal of Antennas and Propagation, 2014

Two examples of microwave devices, fed by a coplanar waveguide and realized on a thin substrate (... more Two examples of microwave devices, fed by a coplanar waveguide and realized on a thin substrate (or without such a substrate), are employed to investigate the influence of devices’ curvatures and the proximity of different materials on their parameters. To perform the tests, a broadband antenna and a low-pass filter are chosen. A feeding coplanar waveguide is realized on a dielectric material brick attached to an SMA connector and the main device structure is placed in the air or on a thin substrate. The utilization of a thin substrate or its removal from the structure gives rise to the possibility of placing the devices on curved surfaces. The investigated devices are redesigned and manufactured. The antenna has a total size of 46 mm × 44 mm and covers a frequency range of 2.4–35 GHz which gives a 174% fractional bandwidth. The filter has a total size of 50 mm × 80 mm and its bandwidth has a cutoff frequency of 3.4 GHz. The obtained results are verified by measurements and good agr...

Research paper thumbnail of Theoretical and experimental treatment of a microstrip coupled ferrite line circulator

IEE Proceedings - Microwaves, Antennas and Propagation, 2004

ABSTRACT The paper describes a microstrip ferrite coupled line (FCL) junction practically applied... more ABSTRACT The paper describes a microstrip ferrite coupled line (FCL) junction practically applied as a section of the FCL circulator. Improvements over the earlier models include realisation of the microstrip circuit on the dielectric substrate and placing a ferrite overlay on top of the coupled line of the FCL section. Simulation and measurements show the operation bandwidth from 10 to 15 GHz with isolation and reflection losses better than 10 dB and average insertion losses <2.5 dB.

Research paper thumbnail of Lower bound on the eigenvalues of the characteristic equation for an arbitrary multilayered gyromagnetic structure with perpendicular magnetization

IEEE Transactions on Microwave Theory and Techniques, 1989

We have measured the phase noise of an 8.5 GHz GaAs MESFET amplifier at temperatures from 1.7 K t... more We have measured the phase noise of an 8.5 GHz GaAs MESFET amplifier at temperatures from 1.7 K to 300 K for input powers from-30 dBm to well past the 1 dB gain compression point and for sideband frequencies from 0.1 Hz to 25 kHz. The observed flicker phase noise was independent of input power, even at levels producing 4 dB of gain compression, and also changed very little with bias conditions. The intrinsic phase noise at low temperatures (observed below 2.17 K, where an extrinsic effect due to the bubbling of the liquid helium coolant disappears) was slightly higher than that observed at room temperature, However, we saw no sign of the dramatic increase in flicker phase noise at low Manuscript

Research paper thumbnail of Coupled-mode analysis of ferrite microstrip lines

IEEE Microwave and Guided Wave Letters, 1999

A coupled-mode analysis is presented for an axially magnetized ferrite microstrip, with a particu... more A coupled-mode analysis is presented for an axially magnetized ferrite microstrip, with a particular reference to the case of a coupled microstrip (FCL). On the basis of the gyromagnetic coupling between the basis propagating and the evanescent isotropic modes, we determine the propagation characteristics of normal modes in ferrite microstrips. The theory is also applied to define the scattering matrix

Research paper thumbnail of Investigations of Four-Port Circulator Utilizing Cylindrical

Research paper thumbnail of Coupled mode model of distributed ferrite microstrip line circulators

13th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2000. Conference Proceedings (IEEE Cat. No.00EX428), 2000

ABSTRACT A coupled mode approach has been applied to investigate the axially magnetized ferrite c... more ABSTRACT A coupled mode approach has been applied to investigate the axially magnetized ferrite coupled (FCL) microstrip junction. The scattering properties of the junction are obtained and applications of FCL in microstrip distributed circulators are discussed. The performance of a microstrip FCL circulator is investigated by numerical experiment and good agreement with previously published results is obtained

Research paper thumbnail of Ferrite coupled lines junction and its nonreciprocal devices

14th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2002. Conference Proceedings (IEEE Cat.No.02EX562), 2000

... Ferrite Coupled Lines Junction and its Nonreciprocal Devices Jerzy Mazur*, Jeny Michalski&#x2... more ... Ferrite Coupled Lines Junction and its Nonreciprocal Devices Jerzy Mazur*, Jeny Michalski', Mateusz Mazur* ... The length of the ferrite section taken into account is equal 48 mm. For this structure the measured frequency dependent characteristics were published by Davis et al. ...

Research paper thumbnail of Corrections to general analysis of a parallel-plate waveguide inhomogeneously filled with gyromagnetic media

Ieee Transactions on Microwave Theory and Techniques, 1987

Research paper thumbnail of Nonreciprocal Distributed Structures using Coupled Ferrite Lines with Vertical Magnetization

19th European Microwave Conference, 1989, 1989

New configurations of nonreciprocal devices with vertical magnetization are investigated. The str... more New configurations of nonreciprocal devices with vertical magnetization are investigated. The structures proposed base on a new distributed phenomenon consisting in the nonreciprocal response to the even or odd mode excitation of the identical coupled ferrite lines with vertical magnetization (CFLT). The scattering matrix of a section of CFLT is derived and used to model the transmission characteristics of possible 4 and 3 port circulators and an isolator. Since the new effect occurs even for weakly magnetized ferrites the novel structures are particularly suitable for millimetre wave applications.

Research paper thumbnail of Field displacement phenomenon in a rectangular waveguide containing a thin plate of Ω medium

IEEE Microwave and Guided Wave Letters, 1996

An analysis of the wave propagation in a rectangular waveguide containing pseudochiral R slab is ... more An analysis of the wave propagation in a rectangular waveguide containing pseudochiral R slab is presented in this letter. Approximate continuity conditions modeling a thin R plate are introduced to simplify the analysis. The problem is solved by the mode-matching procedure. A notable field displacement phenomenon appearing in the guide owing the pseudochirality properties is studied. Other feature such as a weak perturbation of the dispersion characteristics of the isotropic guide by pseudochirality introduced into the medium is also discussed.

Research paper thumbnail of Field displacement phenomenon in a rectangular waveguide containing a thin plate of Ω medium

IEEE Microwave and Guided Wave Letters, 1996

An analysis of the wave propagation in a rectangular waveguide containing pseudochiral R slab is ... more An analysis of the wave propagation in a rectangular waveguide containing pseudochiral R slab is presented in this letter. Approximate continuity conditions modeling a thin R plate are introduced to simplify the analysis. The problem is solved by the mode-matching procedure. A notable field displacement phenomenon appearing in the guide owing the pseudochirality properties is studied. Other feature such as a weak perturbation of the dispersion characteristics of the isotropic guide by pseudochirality introduced into the medium is also discussed.

Research paper thumbnail of Propagation in Semiconductor Loaded Slot-Line with Perpendicular Induction

9th European Microwave Conference, 1979

Research paper thumbnail of Scattering in a section of rectangular waveguide with a pseudochiral Ω slab

13th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2000. Conference Proceedings (IEEE Cat. No.00EX428), 2000

ABSTRACT The mode matching approach is applied to a rectangular waveguide containing a pseudochir... more ABSTRACT The mode matching approach is applied to a rectangular waveguide containing a pseudochiral Ω slab. From waveguide measurements carried out over a few placements of the slab in the guide the constitutive parameters are extracted. The extraction is performed numerically by a algorithm minimizing the difference between theoretical and measured values of resonance frequency and scattering parameters. The field displacement phenomenon becomes visible by the frequency responses of the scattering parameters and E-field patterns. The measured and theoretical results show the resonance effects which may be applicable in design of bandstop filters

Research paper thumbnail of Experimental Investigations of Ferrite Phase Shifter Magnetized with Rotary Four-Pole Magnetic Fields

2006 International Conference on Microwaves, Radar & Wireless Communications, 2006

ABSTRACT The practical ferrite rotary field phase changer is designed and fabricated for low freq... more ABSTRACT The practical ferrite rotary field phase changer is designed and fabricated for low frequency by using a composite ferrite dielectric rod that allows to reduce diameter of a circular waveguide of phase shift section. Experimental results at 1.3 GHz agree well with ones predicted theoretically confirming the developed design procedure.

Research paper thumbnail of Polarization of a plane wave scattered by an array of cylinders

15th International Conference on Microwaves, Radar and Wireless Communications (IEEE Cat. No.04EX824), 2004

ABSTRACT The theory of TE- and TM-wave scattering by an array of conducting and dielectric cylind... more ABSTRACT The theory of TE- and TM-wave scattering by an array of conducting and dielectric cylinders is investigated using a combination of an iterative scattering procedure and the orthogonal expansion method. Polarization parameters of the scattered plane wave are derived in the near and the far fields.

Research paper thumbnail of Nonreciprocal Structures using Coupled Ferrite Lines Magnetized in the Propagation Direction

18th European Microwave Conference, 1988, 1988

Research paper thumbnail of Investigations of multilayer three-strip coplanar lines with the ferrite material

In this paper the investigations of a multilayer coplanar line consisting of three strips located... more In this paper the investigations of a multilayer coplanar line consisting of three strips located on a longitudinally magnetized ferrite are presented. In the analysis of proposed structure the coupled mode and mode matching methods are applied. Using proposed approach the ferrite coupled line junction is designed. For this junction the transmission parameters are calculated. The numerical results are verified via experiment.

Research paper thumbnail of Scattering by a set of pseudochiral cylinders

16th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2006, 2007

This paper presents the analysis of electromagnetic field scattering by a set of cylindrical obje... more This paper presents the analysis of electromagnetic field scattering by a set of cylindrical objects made of pseudochiral material located in rectangular waveguide junctions and free space. Presented approach is based on the Iterative Scattering Procedure (ISP) and the orthogonal expansion method. Several numerical examples for open and closed problems were presented.

Research paper thumbnail of Analysis of circular cavity with tunable combline resonator

15th Conference on Microwave Techniques COMITE 2010, 2010

ABSTRACT This paper presents the analysis of electromagnetic wave scattering by cylindrical objec... more ABSTRACT This paper presents the analysis of electromagnetic wave scattering by cylindrical object located in a circular resonator. The exact full-wave theory based on the mode-matching method is applied to analyze the structures. The resonance frequencies of the investigated resonators are accurately determined. Validity and accuracy of the approach is verified by comparing the results with alternative numerical methods and the author's experiment.

Research paper thumbnail of Complex Waves in Lossless Dielectric Waveguides

19th European Microwave Conference, 1989, 1989

Research paper thumbnail of Coplanar Waveguide-Fed Broadband Microwave Devices with (or without) a Thin Dielectric Substrate for Use in Flexible Electronic Systems

International Journal of Antennas and Propagation, 2014

Two examples of microwave devices, fed by a coplanar waveguide and realized on a thin substrate (... more Two examples of microwave devices, fed by a coplanar waveguide and realized on a thin substrate (or without such a substrate), are employed to investigate the influence of devices’ curvatures and the proximity of different materials on their parameters. To perform the tests, a broadband antenna and a low-pass filter are chosen. A feeding coplanar waveguide is realized on a dielectric material brick attached to an SMA connector and the main device structure is placed in the air or on a thin substrate. The utilization of a thin substrate or its removal from the structure gives rise to the possibility of placing the devices on curved surfaces. The investigated devices are redesigned and manufactured. The antenna has a total size of 46 mm × 44 mm and covers a frequency range of 2.4–35 GHz which gives a 174% fractional bandwidth. The filter has a total size of 50 mm × 80 mm and its bandwidth has a cutoff frequency of 3.4 GHz. The obtained results are verified by measurements and good agr...

Research paper thumbnail of Theoretical and experimental treatment of a microstrip coupled ferrite line circulator

IEE Proceedings - Microwaves, Antennas and Propagation, 2004

ABSTRACT The paper describes a microstrip ferrite coupled line (FCL) junction practically applied... more ABSTRACT The paper describes a microstrip ferrite coupled line (FCL) junction practically applied as a section of the FCL circulator. Improvements over the earlier models include realisation of the microstrip circuit on the dielectric substrate and placing a ferrite overlay on top of the coupled line of the FCL section. Simulation and measurements show the operation bandwidth from 10 to 15 GHz with isolation and reflection losses better than 10 dB and average insertion losses <2.5 dB.

Research paper thumbnail of Lower bound on the eigenvalues of the characteristic equation for an arbitrary multilayered gyromagnetic structure with perpendicular magnetization

IEEE Transactions on Microwave Theory and Techniques, 1989

We have measured the phase noise of an 8.5 GHz GaAs MESFET amplifier at temperatures from 1.7 K t... more We have measured the phase noise of an 8.5 GHz GaAs MESFET amplifier at temperatures from 1.7 K to 300 K for input powers from-30 dBm to well past the 1 dB gain compression point and for sideband frequencies from 0.1 Hz to 25 kHz. The observed flicker phase noise was independent of input power, even at levels producing 4 dB of gain compression, and also changed very little with bias conditions. The intrinsic phase noise at low temperatures (observed below 2.17 K, where an extrinsic effect due to the bubbling of the liquid helium coolant disappears) was slightly higher than that observed at room temperature, However, we saw no sign of the dramatic increase in flicker phase noise at low Manuscript

Research paper thumbnail of Coupled-mode analysis of ferrite microstrip lines

IEEE Microwave and Guided Wave Letters, 1999

A coupled-mode analysis is presented for an axially magnetized ferrite microstrip, with a particu... more A coupled-mode analysis is presented for an axially magnetized ferrite microstrip, with a particular reference to the case of a coupled microstrip (FCL). On the basis of the gyromagnetic coupling between the basis propagating and the evanescent isotropic modes, we determine the propagation characteristics of normal modes in ferrite microstrips. The theory is also applied to define the scattering matrix

Research paper thumbnail of Investigations of Four-Port Circulator Utilizing Cylindrical

Research paper thumbnail of Coupled mode model of distributed ferrite microstrip line circulators

13th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2000. Conference Proceedings (IEEE Cat. No.00EX428), 2000

ABSTRACT A coupled mode approach has been applied to investigate the axially magnetized ferrite c... more ABSTRACT A coupled mode approach has been applied to investigate the axially magnetized ferrite coupled (FCL) microstrip junction. The scattering properties of the junction are obtained and applications of FCL in microstrip distributed circulators are discussed. The performance of a microstrip FCL circulator is investigated by numerical experiment and good agreement with previously published results is obtained

Research paper thumbnail of Ferrite coupled lines junction and its nonreciprocal devices

14th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2002. Conference Proceedings (IEEE Cat.No.02EX562), 2000

... Ferrite Coupled Lines Junction and its Nonreciprocal Devices Jerzy Mazur*, Jeny Michalski&#x2... more ... Ferrite Coupled Lines Junction and its Nonreciprocal Devices Jerzy Mazur*, Jeny Michalski', Mateusz Mazur* ... The length of the ferrite section taken into account is equal 48 mm. For this structure the measured frequency dependent characteristics were published by Davis et al. ...

Research paper thumbnail of Corrections to general analysis of a parallel-plate waveguide inhomogeneously filled with gyromagnetic media

Ieee Transactions on Microwave Theory and Techniques, 1987