Pub Date : 1988-05-25DOI: 10.1109/MWSYM.1988.22049
A. Rong, S. Li
Gap discontinuities in suspended stripline are investigated rigorously using a resonance method together with a variational technique. Full-wave analysis is applied to the equivalent circuit parameters and frequency dispersion effects are taken into account. A set of design charts at Ka-band and W-band are evaluated. Using these results, a Ka-band prototype bandpass filter has been designed and tested to demonstrate the feasibility of the analysis. The measured results agree well with the theoretical predictions.<>
{"title":"Frequency-dependent characteristics of gap discontinuities in suspended striplines for millimeter-wave applications","authors":"A. Rong, S. Li","doi":"10.1109/MWSYM.1988.22049","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22049","url":null,"abstract":"Gap discontinuities in suspended stripline are investigated rigorously using a resonance method together with a variational technique. Full-wave analysis is applied to the equivalent circuit parameters and frequency dispersion effects are taken into account. A set of design charts at Ka-band and W-band are evaluated. Using these results, a Ka-band prototype bandpass filter has been designed and tested to demonstrate the feasibility of the analysis. The measured results agree well with the theoretical predictions.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121346665","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 : 1988-05-25DOI: 10.1109/MWSYM.1988.22156
S. Kaplan, A. Cuneo, R. Garver
This study is concerned with identifying worst-case results for microwave energy coupled into electronic systems. A method of observing specific arc locations in parallel-coupled stripline filters using a conventional oscilloscope camera is described. Experiments were performed with a network analyzer and with two 1-MW pulsed sources at S-band and X-band frequencies, respectively. The results were used to develop models of the parallel-coupled-stripline filters. These models are in good agreement with the low-power S-parameter data from network analyzer measurements made on the filters. High-power models were constructed using zero impedance paths to represent arcs. These models extend limited high-power data, giving the wideband responses of the filters under conditions of breakdown.<>
{"title":"Microwave-induced arcing in filters","authors":"S. Kaplan, A. Cuneo, R. Garver","doi":"10.1109/MWSYM.1988.22156","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22156","url":null,"abstract":"This study is concerned with identifying worst-case results for microwave energy coupled into electronic systems. A method of observing specific arc locations in parallel-coupled stripline filters using a conventional oscilloscope camera is described. Experiments were performed with a network analyzer and with two 1-MW pulsed sources at S-band and X-band frequencies, respectively. The results were used to develop models of the parallel-coupled-stripline filters. These models are in good agreement with the low-power S-parameter data from network analyzer measurements made on the filters. High-power models were constructed using zero impedance paths to represent arcs. These models extend limited high-power data, giving the wideband responses of the filters under conditions of breakdown.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122007927","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 : 1988-05-25DOI: 10.1109/MWSYM.1988.22100
R. Halladay, A. Pavio, S. Bingham, A. Kikel
A switched preselector, consisting of monolithic bandpass filters, multithrow switches, and broadband amplifiers, has demonstrated excellent selectivity and low loss characteristics in considerably less volume than conventional microstrip designs. The switches use series and shunt FETs in single-pole four-throw (1P4T) and single-pole double-throw (1P2T) configurations, while the filters were designed using semi-lumped-element techniques. A preselector filter bank with postamplification was designed that consisted of four 5-pole Chebyshev bandpass topologies, with center frequencies of 1.5, 2.8, 4.9, and 9.2 GHz, respectively, and bandwidths slightly less than an octave. The LC filter realizations were designed using monolithic parallel plate (MIM) capacitors and high-impedance transmission lines for inductors. Realization of the inductor values was simplified by using tapped inductor techniques simulating an autotransformer, thus enabling the designer to select a variety of transforming ratios. Excellent channel-to-channel isolation, switching speed, and sensitivities, comparable to those of other much larger hybrid approaches, were obtained.<>
{"title":"A monolithic channelized preselector for EW receiver applications","authors":"R. Halladay, A. Pavio, S. Bingham, A. Kikel","doi":"10.1109/MWSYM.1988.22100","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22100","url":null,"abstract":"A switched preselector, consisting of monolithic bandpass filters, multithrow switches, and broadband amplifiers, has demonstrated excellent selectivity and low loss characteristics in considerably less volume than conventional microstrip designs. The switches use series and shunt FETs in single-pole four-throw (1P4T) and single-pole double-throw (1P2T) configurations, while the filters were designed using semi-lumped-element techniques. A preselector filter bank with postamplification was designed that consisted of four 5-pole Chebyshev bandpass topologies, with center frequencies of 1.5, 2.8, 4.9, and 9.2 GHz, respectively, and bandwidths slightly less than an octave. The LC filter realizations were designed using monolithic parallel plate (MIM) capacitors and high-impedance transmission lines for inductors. Realization of the inductor values was simplified by using tapped inductor techniques simulating an autotransformer, thus enabling the designer to select a variety of transforming ratios. Excellent channel-to-channel isolation, switching speed, and sensitivities, comparable to those of other much larger hybrid approaches, were obtained.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124067388","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 : 1988-05-25DOI: 10.1109/MWSYM.1988.22227
S. El-Rabaie, J. Stewart, V. Fusco, J. J. McKeown
An approach is described for the large-signal analysis and optimization of microwave frequency doublers. A large-signal lumped-element model is used for an NE 71000 chip MESFET with a two-level harmonic balance program to analyze and optimize a target ideal doubler. A practical circuit is built to synthesize the ideal doubler requirement. To verify the method experimentally, a single-ended doubler operating from 7-14-GHz has been used as a demonstrator. Agreement between experiment and theory is excellent. The method described is transferable to multipliers of higher order, and to higher frequencies.<>
{"title":"A novel approach for the large signal analysis and optimisation of microwave frequency doublers","authors":"S. El-Rabaie, J. Stewart, V. Fusco, J. J. McKeown","doi":"10.1109/MWSYM.1988.22227","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22227","url":null,"abstract":"An approach is described for the large-signal analysis and optimization of microwave frequency doublers. A large-signal lumped-element model is used for an NE 71000 chip MESFET with a two-level harmonic balance program to analyze and optimize a target ideal doubler. A practical circuit is built to synthesize the ideal doubler requirement. To verify the method experimentally, a single-ended doubler operating from 7-14-GHz has been used as a demonstrator. Agreement between experiment and theory is excellent. The method described is transferable to multipliers of higher order, and to higher frequencies.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129870560","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 : 1988-05-25DOI: 10.1109/MWSYM.1988.22215
T. S. Tan, R. Jungerman, S. Elliott
A dual Nd:YAG ring laser heterodyne system for the calibration of optical receivers is presented. This heterodyne system offers more than 50 dB of dynamic range. Calibration of optical phase and amplitude modulators is achieved by downconverting a sideband of the modulated optical carrier to a fixed intermediate frequency with another laser. This technique eliminates the need for a high-speed receiver. This dual YAG system is capable of generating beat frequencies from DC to more than 100 GHz.<>
{"title":"Calibration of optical receivers and modulators using an optical heterodyne technique","authors":"T. S. Tan, R. Jungerman, S. Elliott","doi":"10.1109/MWSYM.1988.22215","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22215","url":null,"abstract":"A dual Nd:YAG ring laser heterodyne system for the calibration of optical receivers is presented. This heterodyne system offers more than 50 dB of dynamic range. Calibration of optical phase and amplitude modulators is achieved by downconverting a sideband of the modulated optical carrier to a fixed intermediate frequency with another laser. This technique eliminates the need for a high-speed receiver. This dual YAG system is capable of generating beat frequencies from DC to more than 100 GHz.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131189916","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 : 1988-05-25DOI: 10.1109/MWSYM.1988.22047
Y. Ito, A. Takeda
A design approach is described for hybrid lossy match amplifiers in the 1-13-GHz and 1-20-GHz bands, using 0.3- mu m-gate-length GaAs HEMTs (high-electron-mobility transistors). Two types of these two-stage lossy match amplifiers have been realized. One amplifier, using 0.3*280 mu m GaAs HEMTs, exhibits 14.0+or-0.4 dB gain, better than 10 dB return loss, and less than 7.8 dB noise figure over the 1-13-GHz band. The other amplifier, using 0.3*200 mu m GaAs HEMTs, shows 9.5+or-0.4 dB gain, better than 10 dB return loss, and less than 7.5 dB noise figure across the 1-20-GHz band.<>
{"title":"GaAs HEMT lossy match amplifiers","authors":"Y. Ito, A. Takeda","doi":"10.1109/MWSYM.1988.22047","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22047","url":null,"abstract":"A design approach is described for hybrid lossy match amplifiers in the 1-13-GHz and 1-20-GHz bands, using 0.3- mu m-gate-length GaAs HEMTs (high-electron-mobility transistors). Two types of these two-stage lossy match amplifiers have been realized. One amplifier, using 0.3*280 mu m GaAs HEMTs, exhibits 14.0+or-0.4 dB gain, better than 10 dB return loss, and less than 7.8 dB noise figure over the 1-13-GHz band. The other amplifier, using 0.3*200 mu m GaAs HEMTs, shows 9.5+or-0.4 dB gain, better than 10 dB return loss, and less than 7.5 dB noise figure across the 1-20-GHz band.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129604782","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 : 1988-05-25DOI: 10.1109/MWSYM.1988.22144
M. Radmanesh, C. Chu, G. Haddad
Magnetostatic volume-wave propagation in a finite-width ferrite slab placed inside and along a rectangular waveguide is investigated theoretically and numerically. Using the integral equation method, the general solution to the problem of wave propagation is derived. The thin-slab approximation makes the derived solution more tractable and provides the dispersion relations in terms of an infinite determinant. The results indicated that in order to obtain high values of group time delay over a large bandwidth, thin, narrow slabs placed in the center of the guide must be used. To maximize the device bandwidth, thin slabs placed at the top or bottom of the guide are most appropriate.<>
{"title":"The analysis of magnetostatic waves in a waveguide using the integral equation method","authors":"M. Radmanesh, C. Chu, G. Haddad","doi":"10.1109/MWSYM.1988.22144","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22144","url":null,"abstract":"Magnetostatic volume-wave propagation in a finite-width ferrite slab placed inside and along a rectangular waveguide is investigated theoretically and numerically. Using the integral equation method, the general solution to the problem of wave propagation is derived. The thin-slab approximation makes the derived solution more tractable and provides the dispersion relations in terms of an infinite determinant. The results indicated that in order to obtain high values of group time delay over a large bandwidth, thin, narrow slabs placed in the center of the guide must be used. To maximize the device bandwidth, thin slabs placed at the top or bottom of the guide are most appropriate.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130003858","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 : 1988-05-25DOI: 10.1109/MWSYM.1988.22127
J.L. Merenda, D. Neuf, P. Piro
Second-harmonic mixing from 4-40-GHz with a 2-20-GHz local oscillator (LO) has been obtained using an eight-diode antiparallel bridge in a balanced microstrip circuit. The development and testing of this mixer, which includes a lumped-element diplexer, was expedited by a 10*scale model at 4 GHz. The mixer operates with less than 12-dB conversion loss and +12-dBm input third-order intermodulation point, at a LO power of +14 dBm.<>
{"title":"4 to 40 GHz even harmonic Schottky mixer","authors":"J.L. Merenda, D. Neuf, P. Piro","doi":"10.1109/MWSYM.1988.22127","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22127","url":null,"abstract":"Second-harmonic mixing from 4-40-GHz with a 2-20-GHz local oscillator (LO) has been obtained using an eight-diode antiparallel bridge in a balanced microstrip circuit. The development and testing of this mixer, which includes a lumped-element diplexer, was expedited by a 10*scale model at 4 GHz. The mixer operates with less than 12-dB conversion loss and +12-dBm input third-order intermodulation point, at a LO power of +14 dBm.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131216474","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 : 1988-05-25DOI: 10.1109/MWSYM.1988.22081
J. Andrews, T. Holden, K.W. Lee, A. Podell
A broadband monolithic microwave integrated circuit (MMIC) voltage-controlled oscillator (VCO) is described that continuously tunes from 2.5 GHz to 6.0 GHz (85% bandwidth). Changing the tuning inductance allows band selection from 1.5 to 6.0 GHz. The circuit was designed using both linear and nonlinear computer-aided design (CAD).<>
{"title":"2.5-6.0 GHz broadband GaAs MMIC VCO","authors":"J. Andrews, T. Holden, K.W. Lee, A. Podell","doi":"10.1109/MWSYM.1988.22081","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22081","url":null,"abstract":"A broadband monolithic microwave integrated circuit (MMIC) voltage-controlled oscillator (VCO) is described that continuously tunes from 2.5 GHz to 6.0 GHz (85% bandwidth). Changing the tuning inductance allows band selection from 1.5 to 6.0 GHz. The circuit was designed using both linear and nonlinear computer-aided design (CAD).<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127955712","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 : 1988-05-25DOI: 10.1109/MWSYM.1988.22184
A. Daryoush, A. Khanna, K. Bhasin, R. Kunath
Large-aperture phased-array antennas operating at millimeter-wave frequencies are designed for space-based communications and imaging. Array elements are comprised of active transmit/receive (T/R) modules which are linked to the central processing unit through a high-speed fiber-optic network. Experimental results are reported that demonstrate optical control of active modules for satellite communication at 24 GHz. An approach called T/R level data mixing, which utilizes fiber-optic transmission of data signal to individual T/R modules to be upconverted by an optically synchronized local oscillator, is demonstrated at 24 GHz. In this study, a free-running HEMT oscillator, used as a local oscillator at 24 GHz, is synchronized using indirect subharmonic optical injection-locking over a locking range of 14 MHz. Results of data-link performance over 500-1000 MHz is also reported in terms of gain-bandwidth, linearity and third-order intercept, sensitivity, and dynamic range.<>
{"title":"Fiber optic links for millimeter wave communication satellites","authors":"A. Daryoush, A. Khanna, K. Bhasin, R. Kunath","doi":"10.1109/MWSYM.1988.22184","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22184","url":null,"abstract":"Large-aperture phased-array antennas operating at millimeter-wave frequencies are designed for space-based communications and imaging. Array elements are comprised of active transmit/receive (T/R) modules which are linked to the central processing unit through a high-speed fiber-optic network. Experimental results are reported that demonstrate optical control of active modules for satellite communication at 24 GHz. An approach called T/R level data mixing, which utilizes fiber-optic transmission of data signal to individual T/R modules to be upconverted by an optically synchronized local oscillator, is demonstrated at 24 GHz. In this study, a free-running HEMT oscillator, used as a local oscillator at 24 GHz, is synchronized using indirect subharmonic optical injection-locking over a locking range of 14 MHz. Results of data-link performance over 500-1000 MHz is also reported in terms of gain-bandwidth, linearity and third-order intercept, sensitivity, and dynamic range.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127971945","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：