Pub Date : 1986-06-02DOI: 10.1109/MWSYM.1986.1132289
M. Walton, P. Haugen, S. Palmquist
A 1GBit/s optical input transmitter chip has been developed to evaluate the performance of optical fibers as a communication media in high speed electronics. The transmitter chip has been fabricated in depletion mode GaAs with a one micron gate length. Optical/electrical functionality has been demonstrated at the wafer level.
{"title":"A 1GBit/s Optical/Electrical Input Monolithic GaAs Transmitter I. C .","authors":"M. Walton, P. Haugen, S. Palmquist","doi":"10.1109/MWSYM.1986.1132289","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132289","url":null,"abstract":"A 1GBit/s optical input transmitter chip has been developed to evaluate the performance of optical fibers as a communication media in high speed electronics. The transmitter chip has been fabricated in depletion mode GaAs with a one micron gate length. Optical/electrical functionality has been demonstrated at the wafer level.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127841680","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132120
J. F. Cushman, M. Hines
A New IMPATT diode amplifier circuit is described which uses planar microstrip circuitry. A single-diode stage serves as a driver for a four-diode combiner stage. The combiner uses a tree of three hybrids of the Wilkinson-Gysel type. GaAs double-drift IMPATT diodes are used. The device provides a minimum of 12 dB gain over a band from 9.4 to 10.6 GHz with a peak pulsed output between 105 and 120 watts over the band.
{"title":"Low-Cost Modular 100-Watt Peak 10% Bandwidth Microstrip IMPATT Amplifier","authors":"J. F. Cushman, M. Hines","doi":"10.1109/MWSYM.1986.1132120","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132120","url":null,"abstract":"A New IMPATT diode amplifier circuit is described which uses planar microstrip circuitry. A single-diode stage serves as a driver for a four-diode combiner stage. The combiner uses a tree of three hybrids of the Wilkinson-Gysel type. GaAs double-drift IMPATT diodes are used. The device provides a minimum of 12 dB gain over a band from 9.4 to 10.6 GHz with a peak pulsed output between 105 and 120 watts over the band.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128869322","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132190
Y. Kobayashi, H. Furukawa
Compact elliptic bandpass filters of three types are constructed by using four TM/sub 010/ dielectric rod resonators. Filters designed to have center frequencies of 3 to 5 GHz, relative bandwidths of 2 to 13 percent, insertion losses of 0.3 to 1.6 dB, and minimum stopband attenuations of 40 to 52 dB.
{"title":"Elliptic Bandpass Filters Using Four TM/sub 010/ Dielectric Rod Resonators","authors":"Y. Kobayashi, H. Furukawa","doi":"10.1109/MWSYM.1986.1132190","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132190","url":null,"abstract":"Compact elliptic bandpass filters of three types are constructed by using four TM/sub 010/ dielectric rod resonators. Filters designed to have center frequencies of 3 to 5 GHz, relative bandwidths of 2 to 13 percent, insertion losses of 0.3 to 1.6 dB, and minimum stopband attenuations of 40 to 52 dB.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123363772","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132164
E. Yamashita, M. Nakajima, K. Atsuki
This paper describes an effective analysis method suited to planar transmission lines having multiple conductor sheets, multiple substrates, and multiple grooves or pedestals. A coupled strip line structure is analyzed based on this method. Some experimental results are shown.
{"title":"Analysis Method for Generalized Suspended Strip Lines","authors":"E. Yamashita, M. Nakajima, K. Atsuki","doi":"10.1109/MWSYM.1986.1132164","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132164","url":null,"abstract":"This paper describes an effective analysis method suited to planar transmission lines having multiple conductor sheets, multiple substrates, and multiple grooves or pedestals. A coupled strip line structure is analyzed based on this method. Some experimental results are shown.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126503805","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132303
R. Paglione, F. Sterzer, A. Winter, J. Laing
Nineteen patients with malignant brain tumors who had failed to respond to conventional therapies were treated with invasive thermotherapy. In the last four of these patients the thermotherapy was combined with brachytherapy. Hyperthermic temperatures (-43 °C) were induced in the tumors using microwaves at a frequency of 2450 MHz that were guided into the tumors by one or more semi-rigid coaxial applicators. The feasibility of non-invasively heating malignant brain tumors that are located close to the skull is being investigated. A microwave lens that can concentrate 915 MHz microwave power into small tissue volumes shows promise of being clinically useful.
{"title":"Instrumentation for Invasive and Non-Invasive Microwave Hyperthermia of Brain Tumors","authors":"R. Paglione, F. Sterzer, A. Winter, J. Laing","doi":"10.1109/MWSYM.1986.1132303","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132303","url":null,"abstract":"Nineteen patients with malignant brain tumors who had failed to respond to conventional therapies were treated with invasive thermotherapy. In the last four of these patients the thermotherapy was combined with brachytherapy. Hyperthermic temperatures (-43 °C) were induced in the tumors using microwaves at a frequency of 2450 MHz that were guided into the tumors by one or more semi-rigid coaxial applicators. The feasibility of non-invasively heating malignant brain tumors that are located close to the skull is being investigated. A microwave lens that can concentrate 915 MHz microwave power into small tissue volumes shows promise of being clinically useful.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115221769","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132239
L. Zong-wen, Zhang Wen-xun
The operation principle and the design method of Distributed Bragg Reflector Gunn oscillators in the millimeter waveband are described based on the theory of coupled-modes in a dielectric grating region, the oscillator is constructed by an inverted-strip dielectric waveguide and an inserted Gunn diode. A practical oscillator with an output of 60~90 mW and 10/sup -5/~10/sup -6/ frequency stability at 36 GHz has been performed, the test results are in agreement with theoretical predictions.
{"title":"Design and Performance of the Millimeter Wave DBR Gunn Oscillators","authors":"L. Zong-wen, Zhang Wen-xun","doi":"10.1109/MWSYM.1986.1132239","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132239","url":null,"abstract":"The operation principle and the design method of Distributed Bragg Reflector Gunn oscillators in the millimeter waveband are described based on the theory of coupled-modes in a dielectric grating region, the oscillator is constructed by an inverted-strip dielectric waveguide and an inserted Gunn diode. A practical oscillator with an output of 60~90 mW and 10/sup -5/~10/sup -6/ frequency stability at 36 GHz has been performed, the test results are in agreement with theoretical predictions.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125220534","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132127
A. Beyer, D. Kother, I. Wolff
An optimization procedure for characterizing finline discontinuities has been developed using the generalized scattering matrix formulation for steps in finline technique. The general waveguide representation of a two-taper finline section with a step is investigated first. The scattering matrix representation of the step is deduced from a combined measurement-numerical optimization procedure. Experimental results will verify the feasibility of the method.
{"title":"A Combined Experimental and Theoretical Characterisation of Discontinuities in Unilateral Finlines","authors":"A. Beyer, D. Kother, I. Wolff","doi":"10.1109/MWSYM.1986.1132127","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132127","url":null,"abstract":"An optimization procedure for characterizing finline discontinuities has been developed using the generalized scattering matrix formulation for steps in finline technique. The general waveguide representation of a two-taper finline section with a step is investigated first. The scattering matrix representation of the step is deduced from a combined measurement-numerical optimization procedure. Experimental results will verify the feasibility of the method.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125230493","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132293
W. E. Hord, C. Boyd
Radar system needs exist for antennas capable of forming simultaneous orthogonally polarized congruent agile beams. For a phased array system this implies that the phase shifters must be capable of transmitting and receiving any arbitrary polarization. This paper describes the performance of a latching reciprocal ferrite shifter at X-band frequencies which provides polarization-independent performance at moderate power levels and with low insertion loss.
{"title":"Simultaneous Dual-Polarization Ferrite Phase Shifter","authors":"W. E. Hord, C. Boyd","doi":"10.1109/MWSYM.1986.1132293","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132293","url":null,"abstract":"Radar system needs exist for antennas capable of forming simultaneous orthogonally polarized congruent agile beams. For a phased array system this implies that the phase shifters must be capable of transmitting and receiving any arbitrary polarization. This paper describes the performance of a latching reciprocal ferrite shifter at X-band frequencies which provides polarization-independent performance at moderate power levels and with low insertion loss.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127782416","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132169
Hong-Goo Cho, C. Lee
New types of microwave frequency discriminators are proposed for the narrow band as well as wide-band applications. An example of branch-line hybrid type with 5% operation bandwidth is presented at 4.94 GHz. A bridge type wide-band frequency discriminator is realized using microstrip lines and slot-lines. An experimental discriminator has 50% band-width, which shows good agreement with the theory.
{"title":"Microwave Transmission Line Frequency Discriminators","authors":"Hong-Goo Cho, C. Lee","doi":"10.1109/MWSYM.1986.1132169","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132169","url":null,"abstract":"New types of microwave frequency discriminators are proposed for the narrow band as well as wide-band applications. An example of branch-line hybrid type with 5% operation bandwidth is presented at 4.94 GHz. A bridge type wide-band frequency discriminator is realized using microstrip lines and slot-lines. An experimental discriminator has 50% band-width, which shows good agreement with the theory.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127999880","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132236
H. S. Huang, Hung-chun Chang, J.-S. Wu
Based on a coupled-mode theory, the power transfer between two parallel single-mode and multimode optical fibers is investigated. Numerical calculations show that power coupling among the guided modes can be very complicated. The theoretical results provide an important guidance for the design of directional couplers composed of such fibers.
{"title":"Power Transfer Between Single-Mode and Multimode Optical Fibers","authors":"H. S. Huang, Hung-chun Chang, J.-S. Wu","doi":"10.1109/MWSYM.1986.1132236","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132236","url":null,"abstract":"Based on a coupled-mode theory, the power transfer between two parallel single-mode and multimode optical fibers is investigated. Numerical calculations show that power coupling among the guided modes can be very complicated. The theoretical results provide an important guidance for the design of directional couplers composed of such fibers.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131851178","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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