Pub Date : 1981-06-15DOI: 10.1109/MWSYM.1981.1129817
L. Besser, C. Holmes, M. Ball, M. Medley, S. March
This paper describes a new, third generation computer program called SUPER-COMPACT, that opens a new era in automated microwave circuit design. Although the program is moderately large (approximately 50,000 FORTRAN statements), it can be run efficiently on midi-computers, as well as on most of the large-scale computer systems. The program combines analysis, optimization, and synthesis with interactive graphics for maximum user convenience and efficiency. Databanks, which provide scattering and noise parameters for transistors, dielectric information for substrate materials, and a library of available circuit topologies are integral to the program. While SUPER-COMPACTretains all of the previous capabilities of its first and second generation predecessors, it uses a completely new approach to analyze and optimize microwave circuits. The program utilizes a novel interconnection scheme based upon scattering parameters without requiring the manipulation of large matrices. Both the inputting and outputting of data are handled through interactive graphic terminals.
{"title":"Computer-Aided Design for the 1980's","authors":"L. Besser, C. Holmes, M. Ball, M. Medley, S. March","doi":"10.1109/MWSYM.1981.1129817","DOIUrl":"https://doi.org/10.1109/MWSYM.1981.1129817","url":null,"abstract":"This paper describes a new, third generation computer program called SUPER-COMPACT, that opens a new era in automated microwave circuit design. Although the program is moderately large (approximately 50,000 FORTRAN statements), it can be run efficiently on midi-computers, as well as on most of the large-scale computer systems. The program combines analysis, optimization, and synthesis with interactive graphics for maximum user convenience and efficiency. Databanks, which provide scattering and noise parameters for transistors, dielectric information for substrate materials, and a library of available circuit topologies are integral to the program. While SUPER-COMPACTretains all of the previous capabilities of its first and second generation predecessors, it uses a completely new approach to analyze and optimize microwave circuits. The program utilizes a novel interconnection scheme based upon scattering parameters without requiring the manipulation of large matrices. Both the inputting and outputting of data are handled through interactive graphic terminals.","PeriodicalId":120372,"journal":{"name":"1981 IEEE MTT-S International Microwave Symposium Digest","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133179856","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 : 1981-06-15DOI: 10.1109/MWSYM.1981.1129846
D. Kaminsky, A. Bert, A. Dottin
Theoretical and experimental performances of the traveling wave divider/combiner were presented at the 1980 MTT Symposium. Its application as a combiner circuit for wide bandwidth power amplifiers is experimented, resulting in a small dimensions, planar 2-stage 9 dB gain, 1.5 watts, 6-12 GHz MIC amplifier.
{"title":"A Power FET Octave Bandwidth Traveling Wave Combiner Amplifier","authors":"D. Kaminsky, A. Bert, A. Dottin","doi":"10.1109/MWSYM.1981.1129846","DOIUrl":"https://doi.org/10.1109/MWSYM.1981.1129846","url":null,"abstract":"Theoretical and experimental performances of the traveling wave divider/combiner were presented at the 1980 MTT Symposium. Its application as a combiner circuit for wide bandwidth power amplifiers is experimented, resulting in a small dimensions, planar 2-stage 9 dB gain, 1.5 watts, 6-12 GHz MIC amplifier.","PeriodicalId":120372,"journal":{"name":"1981 IEEE MTT-S International Microwave Symposium Digest","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133194187","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 : 1981-06-15DOI: 10.1109/MWSYM.1981.1129972
S. Koul, B. Bhat
Variational expression is derived for the propagation parameters of coupled microstrip-like transmission lines for millimeter wave applications using the 'transverse transmission line' method. Numerical results are presented for the coupled inverted and coupled suspended lines.
{"title":"Propagation Parameters of Coupled Microstrip-Like Transmission Lines for Millimeter Wave Applications","authors":"S. Koul, B. Bhat","doi":"10.1109/MWSYM.1981.1129972","DOIUrl":"https://doi.org/10.1109/MWSYM.1981.1129972","url":null,"abstract":"Variational expression is derived for the propagation parameters of coupled microstrip-like transmission lines for millimeter wave applications using the 'transverse transmission line' method. Numerical results are presented for the coupled inverted and coupled suspended lines.","PeriodicalId":120372,"journal":{"name":"1981 IEEE MTT-S International Microwave Symposium Digest","volume":"683 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134473295","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 : 1981-06-15DOI: 10.1109/MWSYM.1981.1129986
S. Yamamoto
We report several experimental results on the fundamental characteristics of guided-radiation mode coupling in optical waveguides. Three types of polarization-rotated (TE/spl rarr/TM or vice versa) radiation conversion are examined, which utilize electrooptic effect of LiNbO/sub 3/ and LiTaO/sub 3/.
{"title":"Polarization-Rotated Radiation Conversion in Electrooptic Waveguides","authors":"S. Yamamoto","doi":"10.1109/MWSYM.1981.1129986","DOIUrl":"https://doi.org/10.1109/MWSYM.1981.1129986","url":null,"abstract":"We report several experimental results on the fundamental characteristics of guided-radiation mode coupling in optical waveguides. Three types of polarization-rotated (TE/spl rarr/TM or vice versa) radiation conversion are examined, which utilize electrooptic effect of LiNbO/sub 3/ and LiTaO/sub 3/.","PeriodicalId":120372,"journal":{"name":"1981 IEEE MTT-S International Microwave Symposium Digest","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115754999","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 : 1981-06-15DOI: 10.1109/MWSYM.1981.1129876
J. Hunton
Networks capable of producing differential phase shifts of any value up to 180/spl deg/ with bandwidths as large as 3:1 have been investigated by using computer optimization techniques. A new class of networks that combine band-pass (lines and stubs in ladder form) and all-pass (C-sections) has evolved with performance comparable to that of the cascaded C-section networks described by Schiffman and others. In most cases the new networks are more easily realized, more easily adjusted or tuned, and require less reference-line length.
{"title":"New Differential Phase Shift Networks Combining All-Pass and Band-Pass Elements","authors":"J. Hunton","doi":"10.1109/MWSYM.1981.1129876","DOIUrl":"https://doi.org/10.1109/MWSYM.1981.1129876","url":null,"abstract":"Networks capable of producing differential phase shifts of any value up to 180/spl deg/ with bandwidths as large as 3:1 have been investigated by using computer optimization techniques. A new class of networks that combine band-pass (lines and stubs in ladder form) and all-pass (C-sections) has evolved with performance comparable to that of the cascaded C-section networks described by Schiffman and others. In most cases the new networks are more easily realized, more easily adjusted or tuned, and require less reference-line length.","PeriodicalId":120372,"journal":{"name":"1981 IEEE MTT-S International Microwave Symposium Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124185564","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 : 1981-06-15DOI: 10.1109/MWSYM.1981.1129880
R. Robertson, R. Eisenhart
A coaxially coupled ridged waveguide oscillator circuit using a pulsed IMPATT diode is described. Mechanical tuning bandwidths of 800 MHz (8%) at X-band, instantaneous locking bandwidths greater than 5 percent at 10 dB gain, and a circuit efficiency of 95 to 100 percent have been realized with a silicon pulsed double drift IMPATT diode under large signal conditions.
{"title":"Coaxially Coupled Ridge Waveguide Tunable Oscillator","authors":"R. Robertson, R. Eisenhart","doi":"10.1109/MWSYM.1981.1129880","DOIUrl":"https://doi.org/10.1109/MWSYM.1981.1129880","url":null,"abstract":"A coaxially coupled ridged waveguide oscillator circuit using a pulsed IMPATT diode is described. Mechanical tuning bandwidths of 800 MHz (8%) at X-band, instantaneous locking bandwidths greater than 5 percent at 10 dB gain, and a circuit efficiency of 95 to 100 percent have been realized with a silicon pulsed double drift IMPATT diode under large signal conditions.","PeriodicalId":120372,"journal":{"name":"1981 IEEE MTT-S International Microwave Symposium Digest","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114447833","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 : 1981-06-15DOI: 10.1109/MWSYM.1981.1129970
M. Iskander, R. Maini, C. Durney
The feasibility of using the linear reconstruction techniques in microwave imaging is examined numerically using the method of moments. Images of phantoms simulating biological objects are obtained using the algebraic reconstruction technique. The obtained resolution and sensitivity are discussed.
{"title":"Microwave Imaging: Numerical Simulation and Results","authors":"M. Iskander, R. Maini, C. Durney","doi":"10.1109/MWSYM.1981.1129970","DOIUrl":"https://doi.org/10.1109/MWSYM.1981.1129970","url":null,"abstract":"The feasibility of using the linear reconstruction techniques in microwave imaging is examined numerically using the method of moments. Images of phantoms simulating biological objects are obtained using the algebraic reconstruction technique. The obtained resolution and sensitivity are discussed.","PeriodicalId":120372,"journal":{"name":"1981 IEEE MTT-S International Microwave Symposium Digest","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114543645","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 : 1981-06-15DOI: 10.1109/MWSYM.1981.1129907
H. El Hennawy, K. Schunemann
Based on both a rigorous eigenmode calculation and a modal analysis of discontinuities, a computer-aided design of some diode mounts in fin-line technology has been performed. Theoretical results on a detector with Schottky-diode, a reflection-type phase modulator with pin-diode, a switch with two pin-diodes, and a Gunn oscillator show good agreement with measurements. Finally, some design rules are outlined for mounting semi-conductor devices in a fin-line.
{"title":"Computer-Aided Design of Semiconductor Mounts in Fin-Line Technology","authors":"H. El Hennawy, K. Schunemann","doi":"10.1109/MWSYM.1981.1129907","DOIUrl":"https://doi.org/10.1109/MWSYM.1981.1129907","url":null,"abstract":"Based on both a rigorous eigenmode calculation and a modal analysis of discontinuities, a computer-aided design of some diode mounts in fin-line technology has been performed. Theoretical results on a detector with Schottky-diode, a reflection-type phase modulator with pin-diode, a switch with two pin-diodes, and a Gunn oscillator show good agreement with measurements. Finally, some design rules are outlined for mounting semi-conductor devices in a fin-line.","PeriodicalId":120372,"journal":{"name":"1981 IEEE MTT-S International Microwave Symposium Digest","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114735455","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 : 1981-06-15DOI: 10.1109/MWSYM.1981.1129836
H. A. Willing, B. Spielman
This paper describes the results of an experimental investigation of bilateral fin-line impedance characteristics for matching to small-chip devices. The results from two different experimental approaches are presented and compared with computed results.
{"title":"Experimental Assessment of Bilateral Fin-Line Impedance for Device Matching","authors":"H. A. Willing, B. Spielman","doi":"10.1109/MWSYM.1981.1129836","DOIUrl":"https://doi.org/10.1109/MWSYM.1981.1129836","url":null,"abstract":"This paper describes the results of an experimental investigation of bilateral fin-line impedance characteristics for matching to small-chip devices. The results from two different experimental approaches are presented and compared with computed results.","PeriodicalId":120372,"journal":{"name":"1981 IEEE MTT-S International Microwave Symposium Digest","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115044382","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 : 1981-06-15DOI: 10.1109/MWSYM.1981.1129927
D. R. Decker, A.K. Gupta, W. Petersen, D.R. Ch'en
A monolithic GaAs low-noise 8 GHz preamplifier has been designed and fabricated on a 2.0 mm square chip. Measured gain, VSWR,and noise performance are described and compared to predicted values.
{"title":"An 8 Ghz MMIC Preamplifier","authors":"D. R. Decker, A.K. Gupta, W. Petersen, D.R. Ch'en","doi":"10.1109/MWSYM.1981.1129927","DOIUrl":"https://doi.org/10.1109/MWSYM.1981.1129927","url":null,"abstract":"A monolithic GaAs low-noise 8 GHz preamplifier has been designed and fabricated on a 2.0 mm square chip. Measured gain, VSWR,and noise performance are described and compared to predicted values.","PeriodicalId":120372,"journal":{"name":"1981 IEEE MTT-S International Microwave Symposium Digest","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116899714","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}
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