Pub Date : 1992-06-01DOI: 10.1109/MWSYM.1992.188083
M. Kotaki, Y. Takimoto, E. Akutsu, Y. Fujita, H. Fukuhara, T. Takahashi
The Ministry of Posts and Telecommunications in Japan organized a committee to study millimeter-wave sensing technologies in 1984. The authors outline some of the test results described in the committee's report and clarify what has to be done to put automotive millimeter-wave sensing technology into practice. They describe three types of radar systems, e.g., FM-continuous wave, 2-D imaging, and pulse Doppler, and present the data measured through the laboratory and road tests. Among these systems the FM-CW system showed good performance on a freeway test and under adverse environmental conditions.<>
{"title":"Development of millimeter wave automotive sensing technology in Japan","authors":"M. Kotaki, Y. Takimoto, E. Akutsu, Y. Fujita, H. Fukuhara, T. Takahashi","doi":"10.1109/MWSYM.1992.188083","DOIUrl":"https://doi.org/10.1109/MWSYM.1992.188083","url":null,"abstract":"The Ministry of Posts and Telecommunications in Japan organized a committee to study millimeter-wave sensing technologies in 1984. The authors outline some of the test results described in the committee's report and clarify what has to be done to put automotive millimeter-wave sensing technology into practice. They describe three types of radar systems, e.g., FM-continuous wave, 2-D imaging, and pulse Doppler, and present the data measured through the laboratory and road tests. Among these systems the FM-CW system showed good performance on a freeway test and under adverse environmental conditions.<<ETX>>","PeriodicalId":165665,"journal":{"name":"1992 IEEE Microwave Symposium Digest MTT-S","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114197333","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 : 1992-06-01DOI: 10.1109/MWSYM.1992.187927
J. M. Baird, D. Roper, R.W. Grow
A type of mode analyzer based on an array of field probes at the surface of an overmoded circular waveguide is described. This type of device is needed in high-power microwave research where waveguide sizes typically permit dozens of modes to propagate. Initial experiments at 11 GHz using a 2-in diameter waveguide with 16 propagating modes and 20 surface probes have demonstrated the feasibility of the technique which relies on singular value decomposition algorithms for modal analysis. To make calibration feasible the field probes must respond only to the E-field or the H-field at the waveguide wall. Optimization of probe placement and anticipated errors are analyzed.<>
{"title":"Surface array waveguide mode analyzer","authors":"J. M. Baird, D. Roper, R.W. Grow","doi":"10.1109/MWSYM.1992.187927","DOIUrl":"https://doi.org/10.1109/MWSYM.1992.187927","url":null,"abstract":"A type of mode analyzer based on an array of field probes at the surface of an overmoded circular waveguide is described. This type of device is needed in high-power microwave research where waveguide sizes typically permit dozens of modes to propagate. Initial experiments at 11 GHz using a 2-in diameter waveguide with 16 propagating modes and 20 surface probes have demonstrated the feasibility of the technique which relies on singular value decomposition algorithms for modal analysis. To make calibration feasible the field probes must respond only to the E-field or the H-field at the waveguide wall. Optimization of probe placement and anticipated errors are analyzed.<<ETX>>","PeriodicalId":165665,"journal":{"name":"1992 IEEE Microwave Symposium Digest MTT-S","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114210753","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 : 1992-06-01DOI: 10.1109/MWSYM.1992.188081
M. Aust, H. Wang, R. Carandang, K. Tan, C.H. Chen, T. Trinh, R. Esfandiari, H. Yen
Major components for monolithic Q-band phased-array applications have been developed using 0.2 mu m doped channel pseudomorphic InGaAs/GaAs high electron mobility transistor (HEMT) technology. The components include a high-gain, high-efficiency monolithic amplifier and a 3-bit switched line, monolithic phase shifter. At 44 GHz, measurement results of the amplifier demonstrated a small signal gain of 19.5 dB, and a power added efficiency of 20% at 3-dB compression point with an output power of 9 mW. The phase shifter had a measured insertion loss of 7.5 dB and a phase error smaller than 7 degrees from 43 to 45 GHz for all phase states. These components are suitable for monolithic integrated phased-array transmitter applications.<>
{"title":"GaAs monolithic components development for Q-band phased array application","authors":"M. Aust, H. Wang, R. Carandang, K. Tan, C.H. Chen, T. Trinh, R. Esfandiari, H. Yen","doi":"10.1109/MWSYM.1992.188081","DOIUrl":"https://doi.org/10.1109/MWSYM.1992.188081","url":null,"abstract":"Major components for monolithic Q-band phased-array applications have been developed using 0.2 mu m doped channel pseudomorphic InGaAs/GaAs high electron mobility transistor (HEMT) technology. The components include a high-gain, high-efficiency monolithic amplifier and a 3-bit switched line, monolithic phase shifter. At 44 GHz, measurement results of the amplifier demonstrated a small signal gain of 19.5 dB, and a power added efficiency of 20% at 3-dB compression point with an output power of 9 mW. The phase shifter had a measured insertion loss of 7.5 dB and a phase error smaller than 7 degrees from 43 to 45 GHz for all phase states. These components are suitable for monolithic integrated phased-array transmitter applications.<<ETX>>","PeriodicalId":165665,"journal":{"name":"1992 IEEE Microwave Symposium Digest MTT-S","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114369290","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 : 1992-06-01DOI: 10.1109/MWSYM.1992.188157
M. Tsuji, H. Shigesawa
The authors report a new feature of wave-form deformation and unexpected crosstalk when a narrow pulse is transmitted on the conventional coplanar waveguide (CPW). The causes of such a new feature are that the standard, well-known dominant mode on a conventional CPW becomes leaky above a certain critical frequency, and also that the CPW possesses another type of dominant mode below that frequency. Especially, the leakage effect appears on most printed-circuit waveguides. The authors have calculated the properties associated with the narrow-pulse transmission, for several different structures, by means of the finite-difference time-domain method. Numerical examples for conventional coplanar waveguides prove that such a feature has a serious influence on high-speed circuit design.<>
{"title":"The feature of the narrow-pulse transmission on conventional coplanar waveguides when power leakage is present","authors":"M. Tsuji, H. Shigesawa","doi":"10.1109/MWSYM.1992.188157","DOIUrl":"https://doi.org/10.1109/MWSYM.1992.188157","url":null,"abstract":"The authors report a new feature of wave-form deformation and unexpected crosstalk when a narrow pulse is transmitted on the conventional coplanar waveguide (CPW). The causes of such a new feature are that the standard, well-known dominant mode on a conventional CPW becomes leaky above a certain critical frequency, and also that the CPW possesses another type of dominant mode below that frequency. Especially, the leakage effect appears on most printed-circuit waveguides. The authors have calculated the properties associated with the narrow-pulse transmission, for several different structures, by means of the finite-difference time-domain method. Numerical examples for conventional coplanar waveguides prove that such a feature has a serious influence on high-speed circuit design.<<ETX>>","PeriodicalId":165665,"journal":{"name":"1992 IEEE Microwave Symposium Digest MTT-S","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121468678","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 : 1992-06-01DOI: 10.1109/MWSYM.1992.188161
B. Mayer, R. Knochel
For the precise measurement of surface resistance of HTSs (high-temperature superconductors), a systematic design theory for truncated cone cavities is given. This kind of cavity avoids mode degeneration, which is a problem if cylindrical cavities are used. Also, if offers a considerably higher sensitivity with regard to surface resistance measurements. A measurement system at 52 GHz is described and results for three samples are given. The residual resistances of the three films were in the range of 5 m Omega to 10 m Omega at 52 GHz. A measurement accuracy of +or-0.5 m Omega has been achieved.<>
为了精确测量高温超导体的表面电阻，给出了一种系统的截锥腔设计理论。这种腔避免了模态退化，这是一个问题，如果使用圆柱腔。此外，它提供了相当高的灵敏度，关于表面电阻的测量。介绍了一种52 GHz的测量系统，并给出了三个样品的测量结果。在52 GHz下，三种薄膜的残余电阻在5 ~ 10 m ω范围内。测量精度达到+或0.5 m ω。
{"title":"MM-wave surface resistance measurements of HTS films using a highly sensitive cavity","authors":"B. Mayer, R. Knochel","doi":"10.1109/MWSYM.1992.188161","DOIUrl":"https://doi.org/10.1109/MWSYM.1992.188161","url":null,"abstract":"For the precise measurement of surface resistance of HTSs (high-temperature superconductors), a systematic design theory for truncated cone cavities is given. This kind of cavity avoids mode degeneration, which is a problem if cylindrical cavities are used. Also, if offers a considerably higher sensitivity with regard to surface resistance measurements. A measurement system at 52 GHz is described and results for three samples are given. The residual resistances of the three films were in the range of 5 m Omega to 10 m Omega at 52 GHz. A measurement accuracy of +or-0.5 m Omega has been achieved.<<ETX>>","PeriodicalId":165665,"journal":{"name":"1992 IEEE Microwave Symposium Digest MTT-S","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121537676","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 : 1992-06-01DOI: 10.1109/MWSYM.1992.188234
J. Pribetich, L. Dubois, P. Cresson, M. Chivé
A two-dimensional model of a microstrip-microslot resonator with a protective layer in contact with a multilayered lossy medium is presented. This analysis is based on the spectral domain approach (SDA). Theoretical and experimental results on the resonant frequencies, the power deposition, and the heating patterns of a planar applicator radiating into a human body or phantoms are presented. This work makes it possible to obtain the complex resonant frequency, i.e., the resonant frequency and the Q factor of the structure and the power deposition from which the thermal pattern can be obtained. Good agreement between two-dimensional theory and experiment is obtained. Therefore, this approach constitutes an additional numerical simulation tool which makes it possible to obtain a better optimization of the geometrical parameters of the applicator and to optimize the efficiency of hyperthermia treatments by a better knowledge of the temperature pattern in the heated tissues.<>
{"title":"Bidimensional analysis of planar applicators from spectral domain approach method for 915 MHz hyperthermia","authors":"J. Pribetich, L. Dubois, P. Cresson, M. Chivé","doi":"10.1109/MWSYM.1992.188234","DOIUrl":"https://doi.org/10.1109/MWSYM.1992.188234","url":null,"abstract":"A two-dimensional model of a microstrip-microslot resonator with a protective layer in contact with a multilayered lossy medium is presented. This analysis is based on the spectral domain approach (SDA). Theoretical and experimental results on the resonant frequencies, the power deposition, and the heating patterns of a planar applicator radiating into a human body or phantoms are presented. This work makes it possible to obtain the complex resonant frequency, i.e., the resonant frequency and the Q factor of the structure and the power deposition from which the thermal pattern can be obtained. Good agreement between two-dimensional theory and experiment is obtained. Therefore, this approach constitutes an additional numerical simulation tool which makes it possible to obtain a better optimization of the geometrical parameters of the applicator and to optimize the efficiency of hyperthermia treatments by a better knowledge of the temperature pattern in the heated tissues.<<ETX>>","PeriodicalId":165665,"journal":{"name":"1992 IEEE Microwave Symposium Digest MTT-S","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121669616","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 : 1992-06-01DOI: 10.1109/MWSYM.1992.188323
A. Suárez, R. Quéré, M. Camiade, E. Ngoya
A monolithic regenerative divider by two with a 6-GHz central input frequency has been designed and fully characterized using an improved harmonic balance formulation, suitable to deal with autonomous and phase-locked regimes. The solution paths when the input generator power and frequency are modified have been traced. The output power at the divided frequency has been evaluated as a function of both parameters as well as the output power of the free running oscillator regime. Results have been experimentally verified, and excellent agreement has been obtained. Frequency jumps and hysteresis phenomena often encountered in such devices can be fully analyzed, thus providing a useful tool for a thorough investigation of synchronized devices.<>
{"title":"Large signal design of broadband monolithic microwave frequency dividers","authors":"A. Suárez, R. Quéré, M. Camiade, E. Ngoya","doi":"10.1109/MWSYM.1992.188323","DOIUrl":"https://doi.org/10.1109/MWSYM.1992.188323","url":null,"abstract":"A monolithic regenerative divider by two with a 6-GHz central input frequency has been designed and fully characterized using an improved harmonic balance formulation, suitable to deal with autonomous and phase-locked regimes. The solution paths when the input generator power and frequency are modified have been traced. The output power at the divided frequency has been evaluated as a function of both parameters as well as the output power of the free running oscillator regime. Results have been experimentally verified, and excellent agreement has been obtained. Frequency jumps and hysteresis phenomena often encountered in such devices can be fully analyzed, thus providing a useful tool for a thorough investigation of synchronized devices.<<ETX>>","PeriodicalId":165665,"journal":{"name":"1992 IEEE Microwave Symposium Digest MTT-S","volume":"1088 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113995087","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 : 1992-06-01DOI: 10.1109/MWSYM.1992.188191
T. Becks, I. Wolff
A full-wave method for the investigation of microstrip- and coplanar-structures including 3-D metallization structures is presented. The spectral domain analysis method was used to calculate the S-parameters of unshielded microwave components containing bond-wires and air-bridges. The general formulation and the method are described. The application of the theory is outlined by a comparison of measured and calculated results for a spiral inductor.<>
{"title":"Full-wave analysis of 3D metallization structures using a spectral domain technique","authors":"T. Becks, I. Wolff","doi":"10.1109/MWSYM.1992.188191","DOIUrl":"https://doi.org/10.1109/MWSYM.1992.188191","url":null,"abstract":"A full-wave method for the investigation of microstrip- and coplanar-structures including 3-D metallization structures is presented. The spectral domain analysis method was used to calculate the S-parameters of unshielded microwave components containing bond-wires and air-bridges. The general formulation and the method are described. The application of the theory is outlined by a comparison of measured and calculated results for a spiral inductor.<<ETX>>","PeriodicalId":165665,"journal":{"name":"1992 IEEE Microwave Symposium Digest MTT-S","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127784099","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 : 1992-06-01DOI: 10.1109/MWSYM.1992.188274
W. Ali-Ahmad, G. Rebeiz
A receiver belonging to the family of integrated planar receivers has been developed at 90 GHz. It consists of a planar Schottky-diode placed at the feed of a dipole-probe suspended inside an integrated horn antenna. A machine section attached to the front of the etched horn increases the gain to 20 dB and results in a Gaussian coupling efficiency of 97%. The measured planar mixer single-sideband conversion loss at 91.2 GHz (LO) with a 200-MHz intermediate frequency is 8.3 dB+or-0.3 dB. The low cost of fabrication and simplicity of the design make it ideal for millimeter- and submillimeter-wave receivers.<>
{"title":"A 90 GHz quasi-integrated horn antenna receiver","authors":"W. Ali-Ahmad, G. Rebeiz","doi":"10.1109/MWSYM.1992.188274","DOIUrl":"https://doi.org/10.1109/MWSYM.1992.188274","url":null,"abstract":"A receiver belonging to the family of integrated planar receivers has been developed at 90 GHz. It consists of a planar Schottky-diode placed at the feed of a dipole-probe suspended inside an integrated horn antenna. A machine section attached to the front of the etched horn increases the gain to 20 dB and results in a Gaussian coupling efficiency of 97%. The measured planar mixer single-sideband conversion loss at 91.2 GHz (LO) with a 200-MHz intermediate frequency is 8.3 dB+or-0.3 dB. The low cost of fabrication and simplicity of the design make it ideal for millimeter- and submillimeter-wave receivers.<<ETX>>","PeriodicalId":165665,"journal":{"name":"1992 IEEE Microwave Symposium Digest MTT-S","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126216118","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 : 1992-06-01DOI: 10.1109/MWSYM.1992.188132
J. Purviance, M. Meehan
The authors delineate the random and deterministic components of the manufacturing and design process. The model introduced shows the differences between statistical sensitivity and classic sensitivity. The statistical sensitivities are an extension of the classic sensitivities, applied to the general statistical outcome of the manufacturing process. The calculation procedure involves the efficient estimation of all the statistical sensitivities by using one Monte Carlo simulation. The calculation of these sensitivities and their application to a Salin and Key active filter are discussed.<>
{"title":"Statistical performance sensitivity-a valuable measure for manufacturing oriented CAD","authors":"J. Purviance, M. Meehan","doi":"10.1109/MWSYM.1992.188132","DOIUrl":"https://doi.org/10.1109/MWSYM.1992.188132","url":null,"abstract":"The authors delineate the random and deterministic components of the manufacturing and design process. The model introduced shows the differences between statistical sensitivity and classic sensitivity. The statistical sensitivities are an extension of the classic sensitivities, applied to the general statistical outcome of the manufacturing process. The calculation procedure involves the efficient estimation of all the statistical sensitivities by using one Monte Carlo simulation. The calculation of these sensitivities and their application to a Salin and Key active filter are discussed.<<ETX>>","PeriodicalId":165665,"journal":{"name":"1992 IEEE Microwave Symposium Digest MTT-S","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115794541","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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