Pub Date : 1997-08-11DOI: 10.1109/SBMOMO.1997.648821
T. Sarkar
The objective of the presentation is to illustrate that the principle of analytic continuation can be utilized to interpolate/extrapolate either computational results or measured data in an efficient fashion instead of utilizing sheer brute force.
{"title":"Application of signal processing algorithms in microwave applications","authors":"T. Sarkar","doi":"10.1109/SBMOMO.1997.648821","DOIUrl":"https://doi.org/10.1109/SBMOMO.1997.648821","url":null,"abstract":"The objective of the presentation is to illustrate that the principle of analytic continuation can be utilized to interpolate/extrapolate either computational results or measured data in an efficient fashion instead of utilizing sheer brute force.","PeriodicalId":219101,"journal":{"name":"1996 26th European Microwave Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127870890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-10-01DOI: 10.1109/EUMA.1996.337642
V. Rizzoli, A. Costanzo, Mauro Caposciutti, A. Neri
The paper discusses the application of the space-mapping concept to the computer-aided optimisation of nonlinear microwave circuits. This method allows the linear subnetwork to be characterised by electromagnetic (EM) simulation, while the nonlinear analysis and design are based on the piecewise harmonic-balance technique. The map between the EM and the circuit model (CM) parameter spaces is defined implicitly and the search for the optimum EM topology is carried out by a norm-reducing Newton iteration.
{"title":"Efficient numerical optimisation of nonlinear microwave circuits by the harmonic-balance technique coupled with electromagnetic simulation","authors":"V. Rizzoli, A. Costanzo, Mauro Caposciutti, A. Neri","doi":"10.1109/EUMA.1996.337642","DOIUrl":"https://doi.org/10.1109/EUMA.1996.337642","url":null,"abstract":"The paper discusses the application of the space-mapping concept to the computer-aided optimisation of nonlinear microwave circuits. This method allows the linear subnetwork to be characterised by electromagnetic (EM) simulation, while the nonlinear analysis and design are based on the piecewise harmonic-balance technique. The map between the EM and the circuit model (CM) parameter spaces is defined implicitly and the search for the optimum EM topology is carried out by a norm-reducing Newton iteration.","PeriodicalId":219101,"journal":{"name":"1996 26th European Microwave Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115605459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-10-01DOI: 10.1109/EUMA.1996.337519
A. Karpov, J. Blondel, P. Pasturel, K. Gundlach
A fixed-tuned SIS mixer covering an instantaneous band of 45% around 150 GHz has been developed for radioastronomy. A new type of coplanar tuning circuit for the SIS junction is introduced. The minimum DSB receiver noise is 19 K, while the average noise is 25K in the 130-175 GHz range with a 1 GHz IF band. A speedup of the observations by a factor 2-3 is possible with the new receiver.
{"title":"A 125-180 GHz fixed-tuned SIS mixer for radioastronomy","authors":"A. Karpov, J. Blondel, P. Pasturel, K. Gundlach","doi":"10.1109/EUMA.1996.337519","DOIUrl":"https://doi.org/10.1109/EUMA.1996.337519","url":null,"abstract":"A fixed-tuned SIS mixer covering an instantaneous band of 45% around 150 GHz has been developed for radioastronomy. A new type of coplanar tuning circuit for the SIS junction is introduced. The minimum DSB receiver noise is 19 K, while the average noise is 25K in the 130-175 GHz range with a 1 GHz IF band. A speedup of the observations by a factor 2-3 is possible with the new receiver.","PeriodicalId":219101,"journal":{"name":"1996 26th European Microwave Conference","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115673295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-10-01DOI: 10.1109/EUMA.1996.337536
M. Vossiek, P. Heide, M. Nalezinski, V. Magori
A new high-performance FMCW sensor system concept is presented. The approach is based on an adaptive signal processing scheme compensating phase errors caused by VCO phase noise as well as the non-linearity of the frequency modulation. The key component of the low-cost sensor is a SAW (surface acoustic wave) delay line representing a miniaturised high-precision radar reference path. A correction algorithm equalises the target signal according to the phase errors simultaneously measured with the reference path. Employing this method, an excellent range resolution as well as a high dynamic range and multi-target selectivlty is obtained, which has been experimentally demonstrated at millimetrewave frequencies.
{"title":"Novel FMCW radar system concept with adaptive compensation of phase errors","authors":"M. Vossiek, P. Heide, M. Nalezinski, V. Magori","doi":"10.1109/EUMA.1996.337536","DOIUrl":"https://doi.org/10.1109/EUMA.1996.337536","url":null,"abstract":"A new high-performance FMCW sensor system concept is presented. The approach is based on an adaptive signal processing scheme compensating phase errors caused by VCO phase noise as well as the non-linearity of the frequency modulation. The key component of the low-cost sensor is a SAW (surface acoustic wave) delay line representing a miniaturised high-precision radar reference path. A correction algorithm equalises the target signal according to the phase errors simultaneously measured with the reference path. Employing this method, an excellent range resolution as well as a high dynamic range and multi-target selectivlty is obtained, which has been experimentally demonstrated at millimetrewave frequencies.","PeriodicalId":219101,"journal":{"name":"1996 26th European Microwave Conference","volume":"19 28-29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116707950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-10-01DOI: 10.1109/EUMA.1996.337529
H. Zirath, I. Angelov, C. Karlsson, N. Rorsman
An LO-rejecting millimeterwave balanced resistive HFET-upconverter based on a dual FET configuration is investigated. Theoretical and experimental results for a 50-60 GHz upconverter as a function of local oscillator power and gate bias voltage, Vgb, is presented. A conversion loss and LO-rejection of 10 dB and 35 dB is experimentally obtained at an LO-power of 5 dBm.
{"title":"A LO-rejecting balanced upconverter for communication systems","authors":"H. Zirath, I. Angelov, C. Karlsson, N. Rorsman","doi":"10.1109/EUMA.1996.337529","DOIUrl":"https://doi.org/10.1109/EUMA.1996.337529","url":null,"abstract":"An LO-rejecting millimeterwave balanced resistive HFET-upconverter based on a dual FET configuration is investigated. Theoretical and experimental results for a 50-60 GHz upconverter as a function of local oscillator power and gate bias voltage, Vgb, is presented. A conversion loss and LO-rejection of 10 dB and 35 dB is experimentally obtained at an LO-power of 5 dBm.","PeriodicalId":219101,"journal":{"name":"1996 26th European Microwave Conference","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122844830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-10-01DOI: 10.1109/EUMA.1996.337610
S. Lindenmeier, W. Heinrich, P. Russer
The incorporation of a priori knowledge of the electrostatic and magneto-static fields into the Finite-Integral algorithm leads to higher efficiency under the condition that the numerical effort for the static field calculations is smaller than that for the conventional full-wave Finite-Integral method. In the electro-static case, the scalar potential approach allows for a fast solution. In the magneto-static case, however, the common description applies a vector potential. The presented method shows a way how to calculate the magnetic field of arbitrary lossless 3D structures also by a scalar potential. The method is based on the insertion of potential partitioning surfaces (PPS) into the structure. The PPS' lead to a uniquely well defined scalar magnetic potential for the calculation of the magnetic field. Using the PPS method the numerical effort for the calculation of the magnetic field is reduced significantly.
{"title":"A fast magneto-static field simulation for the incorporation into a hybrid dynamic-static finite-integral algorithm","authors":"S. Lindenmeier, W. Heinrich, P. Russer","doi":"10.1109/EUMA.1996.337610","DOIUrl":"https://doi.org/10.1109/EUMA.1996.337610","url":null,"abstract":"The incorporation of a priori knowledge of the electrostatic and magneto-static fields into the Finite-Integral algorithm leads to higher efficiency under the condition that the numerical effort for the static field calculations is smaller than that for the conventional full-wave Finite-Integral method. In the electro-static case, the scalar potential approach allows for a fast solution. In the magneto-static case, however, the common description applies a vector potential. The presented method shows a way how to calculate the magnetic field of arbitrary lossless 3D structures also by a scalar potential. The method is based on the insertion of potential partitioning surfaces (PPS) into the structure. The PPS' lead to a uniquely well defined scalar magnetic potential for the calculation of the magnetic field. Using the PPS method the numerical effort for the calculation of the magnetic field is reduced significantly.","PeriodicalId":219101,"journal":{"name":"1996 26th European Microwave Conference","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117007108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-10-01DOI: 10.1109/EUMA.1996.337703
B. Lebed', V. D. Voronkov
The nearest decade development of radio-electronics will be to a great extent related with the mastering of millimeter and submillimeter wave band. This process is considerably stimulated by a great success in development of electronic components for millimeter and sub-millimeter wave bands. So, substantial progress has been achieved in the field of development and production of key components - sufficiently reliable sources of oscillation in the stated bands. Development and putting ferrite devices and apparatus into industry production is one of the key problems of millimeter and sub-millimeter wave band mastering. The ferrite devices are known to be the main type of non-reciprocal passive devices in microwave range. Rather substantial role belongs to ferrite devices in the field of propagation conditions control for the waves in this range. In the present paper the authors consider state-of-art, achieved level of development and the nearest perspectives of creation of ferrite devices for the stated range. The consideration is carried out on the basis of example of typical ferrite devices: non-reciprocal (isolators and circulators) as well as controlled ones (filters and phase-shifters). Just these groups of devices define the state-of-art and the level of development of ferrite device engineering. State of the art millimeter and sub-millimeter wave ferrite components and devices B M Lebed, V D Voronkov R&D Institute Domen, Russia.
无线电电子学最近十年的发展将在很大程度上与对毫米波和亚毫米波波段的掌握有关。毫米波和亚毫米波波段电子元件开发的巨大成功极大地刺激了这一过程。因此,在关键部件的开发和生产领域取得了实质性进展-在所述波段中足够可靠的振荡源。铁氧体器件和仪器的研制和产业化是毫米波和亚毫米波控制的关键问题之一。铁氧体器件是微波范围内非互易无源器件的主要类型。铁氧体器件在该范围内的波的传播条件控制方面起着相当重要的作用。在本论文中,作者考虑了国家的艺术,达到的发展水平和最近的前景,创造的铁氧体器件的规定范围。考虑是在典型铁氧体器件的例子基础上进行的:非互易(隔离器和环行器)以及受控器件(滤波器和移相器)。正是这几组器件定义了铁氧体器件工程的技术水平和发展水平。最先进的毫米波和亚毫米波铁氧体元件和器件B . M .列别德,V . D .沃龙科夫研究所多门,俄罗斯。
{"title":"State of the art millimeter and sub-millimeter wave ferrite components and devices","authors":"B. Lebed', V. D. Voronkov","doi":"10.1109/EUMA.1996.337703","DOIUrl":"https://doi.org/10.1109/EUMA.1996.337703","url":null,"abstract":"The nearest decade development of radio-electronics will be to a great extent related with the mastering of millimeter and submillimeter wave band. This process is considerably stimulated by a great success in development of electronic components for millimeter and sub-millimeter wave bands. So, substantial progress has been achieved in the field of development and production of key components - sufficiently reliable sources of oscillation in the stated bands. Development and putting ferrite devices and apparatus into industry production is one of the key problems of millimeter and sub-millimeter wave band mastering. The ferrite devices are known to be the main type of non-reciprocal passive devices in microwave range. Rather substantial role belongs to ferrite devices in the field of propagation conditions control for the waves in this range. In the present paper the authors consider state-of-art, achieved level of development and the nearest perspectives of creation of ferrite devices for the stated range. The consideration is carried out on the basis of example of typical ferrite devices: non-reciprocal (isolators and circulators) as well as controlled ones (filters and phase-shifters). Just these groups of devices define the state-of-art and the level of development of ferrite device engineering. State of the art millimeter and sub-millimeter wave ferrite components and devices B M Lebed, V D Voronkov R&D Institute Domen, Russia.","PeriodicalId":219101,"journal":{"name":"1996 26th European Microwave Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129594057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-10-01DOI: 10.1109/EUMA.1996.337574
A. Sangster, P. Smith
A microstrip fed T-shaped slot antenna element exhibiting polarisation agility is considered. The radiating element is located perpendicularly and in close proximity to a balanced microstripline which can support either an even-mode or an odd-mode. Predictions of the T-slot operation, at resonance, are obtained from a hybrid moment method analysis which incorporates spectral domain Green's functions. This analysis estimates the amount of power radiated from the axial leg of the T-slot which in turn allows an investigation to be carried out on the possible mechanisms for controlling the level of radiation. An experimental setup for testing the operation of the radiating T-slot is described. Measurements are taken of the power radiated from the axial leg of the T-slot in order to verify the theory. Further measurements demonstrate control of the co-polarised and cross-polarised radiation levels.
{"title":"A polarisation agile T-shaped slot antenna fed from balanced microstripline","authors":"A. Sangster, P. Smith","doi":"10.1109/EUMA.1996.337574","DOIUrl":"https://doi.org/10.1109/EUMA.1996.337574","url":null,"abstract":"A microstrip fed T-shaped slot antenna element exhibiting polarisation agility is considered. The radiating element is located perpendicularly and in close proximity to a balanced microstripline which can support either an even-mode or an odd-mode. Predictions of the T-slot operation, at resonance, are obtained from a hybrid moment method analysis which incorporates spectral domain Green's functions. This analysis estimates the amount of power radiated from the axial leg of the T-slot which in turn allows an investigation to be carried out on the possible mechanisms for controlling the level of radiation. An experimental setup for testing the operation of the radiating T-slot is described. Measurements are taken of the power radiated from the axial leg of the T-slot in order to verify the theory. Further measurements demonstrate control of the co-polarised and cross-polarised radiation levels.","PeriodicalId":219101,"journal":{"name":"1996 26th European Microwave Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128475421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-10-01DOI: 10.1109/EUMA.1996.337627
G. Coen, D. De Zutter
The authors have developed a technique that allows one to automatically derive simple full wave equivalent lumped networks for general planar interconnection discontinuities. In this technique, we start from a so called partial element description (PED) of the given structure. This is a network interpretation of the numerical analysis of the given structure, analogous to Ruehli's PEEC method (Ruehli et al. [1-3]). The circuit elements in this network are complex and frequency dependent. Then, this PED is reduced using a very general network reduction technilque, which was also developed by the same authors. The last step is the extraction from this PED of a network that has only real and frequency independent circuit elements. In this paper, we will discuss the derivation of the PED for microstrip structures.
{"title":"Partial element description (PED) for planar interconnection structures","authors":"G. Coen, D. De Zutter","doi":"10.1109/EUMA.1996.337627","DOIUrl":"https://doi.org/10.1109/EUMA.1996.337627","url":null,"abstract":"The authors have developed a technique that allows one to automatically derive simple full wave equivalent lumped networks for general planar interconnection discontinuities. In this technique, we start from a so called partial element description (PED) of the given structure. This is a network interpretation of the numerical analysis of the given structure, analogous to Ruehli's PEEC method (Ruehli et al. [1-3]). The circuit elements in this network are complex and frequency dependent. Then, this PED is reduced using a very general network reduction technilque, which was also developed by the same authors. The last step is the extraction from this PED of a network that has only real and frequency independent circuit elements. In this paper, we will discuss the derivation of the PED for microstrip structures.","PeriodicalId":219101,"journal":{"name":"1996 26th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130517372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-10-01DOI: 10.1109/EUMA.1996.337681
G. Macchiarella, G. Gentili, Alberto Lobina
Broadband stripline circulators are studied by means of a mixed numerical technique which employs both Boundary Integral and Segmentation methods; this technique allows to analyze planar circuits where the substrate is constituted by several regions with arbitrary shape and different electrical properties. The method of study here presented allows to determine the overall impedance matrix of a 3-port circulator constituted by a non-reciprocal disk with sections of striplines going outside each port; in this way the discontinuities between reciprocal and non-reciprocal medium are included in characterization of the overall device.
{"title":"Analysis of inhomogeneous broadband circulators by means of a mixed numerical method","authors":"G. Macchiarella, G. Gentili, Alberto Lobina","doi":"10.1109/EUMA.1996.337681","DOIUrl":"https://doi.org/10.1109/EUMA.1996.337681","url":null,"abstract":"Broadband stripline circulators are studied by means of a mixed numerical technique which employs both Boundary Integral and Segmentation methods; this technique allows to analyze planar circuits where the substrate is constituted by several regions with arbitrary shape and different electrical properties. The method of study here presented allows to determine the overall impedance matrix of a 3-port circulator constituted by a non-reciprocal disk with sections of striplines going outside each port; in this way the discontinuities between reciprocal and non-reciprocal medium are included in characterization of the overall device.","PeriodicalId":219101,"journal":{"name":"1996 26th European Microwave Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123885086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}