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1988., IEEE MTT-S International Microwave Symposium Digest最新文献

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Q-band computerized slotted line system q波段计算机化槽线系统
1988., IEEE MTT-S International Microwave Symposium Digest Pub Date : 1988-05-25 DOI: 10.1109/MWSYM.1988.22141
T. An, J. Mao, Q. Meng, H. Yan, J. Fang
{"title":"Q-band computerized slotted line system","authors":"T. An, J. Mao, Q. Meng, H. Yan, J. Fang","doi":"10.1109/MWSYM.1988.22141","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22141","url":null,"abstract":"An automatic test system for measuring network parameters at Q-band has been developed. The system is based on the conventional slotted line system and is controlled by the Apple II microcomputer. The principles, construction, and features of the system are presented. Typical results for complex reflection coefficient, voltage standing wave ratio, impedance, attenuation, and S-parameters are given. The system is expected to be valuable in developing test systems at the short-millimeter-wave band.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"18 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":"114333732","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}
引用次数: 0
800 MHz band high-power bandpass filter using TM/sub 110/ mode dielectric resonators for cellular base stations 800 MHz波段高功率带通滤波器，采用TM/sub 110/模介质谐振器，用于蜂窝基站
1988., IEEE MTT-S International Microwave Symposium Digest Pub Date : 1988-05-25 DOI: 10.1109/MWSYM.1988.22088
T. Nishikawa, K. Wakino, T. Hiratsuka, Y. Ishsikawa
{"title":"800 MHz band high-power bandpass filter using TM/sub 110/ mode dielectric resonators for cellular base stations","authors":"T. Nishikawa, K. Wakino, T. Hiratsuka, Y. Ishsikawa","doi":"10.1109/MWSYM.1988.22088","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22088","url":null,"abstract":"An 800-MHz-band high-power filter using TM/sub 110/-mode dielectric resonators with a 25-MHz bandwidth is described. This elliptic function, six-pole filter has low dissipation characteristics and excellent temperature stability. Under high-power operation, the changes of the filter characteristics are negligible. The size of the filter is 200*140*60 mm (1700 cm/sup 3/), about one-fifth the volume of conventional high-power filters.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"8 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":"114610767","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}
引用次数: 0
Robust model parameter extraction using large-scale optimization concepts 基于大规模优化概念的鲁棒模型参数提取
1988., IEEE MTT-S International Microwave Symposium Digest Pub Date : 1988-05-25 DOI: 10.1109/MWSYM.1988.22040
J. Bandler, S.H. Chen, S. Ye, Q. Zhang
{"title":"Robust model parameter extraction using large-scale optimization concepts","authors":"J. Bandler, S.H. Chen, S. Ye, Q. Zhang","doi":"10.1109/MWSYM.1988.22040","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22040","url":null,"abstract":"A robust approach to FET model parameter extraction is presented. By introducing DC constraints and formulating the modeling process as a complete and integrated optimization problem, the uniqueness and reliability of the extracted model parameters is improved. The approach uses multibias measurements and DC device characteristics in a sequential model building approach based on a decomposition dictionary that can be used to arrive at a suitable compromise between the simplicity and adequacy of the model. Novel automatic decomposition concepts for large-scale optimization are used to detect possible model topology deficiencies. A powerful l/sub 1/ optimization technique is used in the algorithm, and all the required gradients are provided through efficient adjoint analyses for both DC and AC sensitivities. A FET modeling example is described in detail to demonstrate the approach.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"22 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":"115105559","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}
引用次数: 3
On-wafer characterization of monolithic millimeter-wave integrated circuits by a picosecond optical electronic technique 用皮秒光电子技术对单片毫米波集成电路进行片上表征
1988., IEEE MTT-S International Microwave Symposium Digest Pub Date : 1988-05-25 DOI: 10.1109/MWSYM.1988.22021
P. Polak-Dingels, H. Hung, T. Smith, H. Huang, K. Webb, C.H. Lee
{"title":"On-wafer characterization of monolithic millimeter-wave integrated circuits by a picosecond optical electronic technique","authors":"P. Polak-Dingels, H. Hung, T. Smith, H. Huang, K. Webb, C.H. Lee","doi":"10.1109/MWSYM.1988.22021","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22021","url":null,"abstract":"A picosecond optical electronic sampling technique for the characterization of monolithic microwave integrated circuits (MMICs) has been developed. The measured time-domain response allows the spectral transfer function of the MMIC to be obtained. This technique was applied to characterize the frequency response of a two-stage Ka-band MMIC amplifier. The broadband results agree well with those obtained by conventional network analyzer measurements.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"132 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":"117134105","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}
引用次数: 9
Distributed analysis of submicron-MESFET noise-properties 亚微米mesfet噪声特性的分布分析
1988., IEEE MTT-S International Microwave Symposium Digest Pub Date : 1988-05-25 DOI: 10.1109/MWSYM.1988.22042
W. Heinrich
{"title":"Distributed analysis of submicron-MESFET noise-properties","authors":"W. Heinrich","doi":"10.1109/MWSYM.1988.22042","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22042","url":null,"abstract":"A distributed MESFET noise analysis is presented and its results are used to determine the validity range of common lumped-element models. It is concluded that systematic investigation varying the equivalent-circuit elements within their realistic range confirmed that the distributed effects can be neglected in conventional submicron low-noise MESFETs. Practical gate-width design-values are given.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"49 9 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":"117282000","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}
引用次数: 6
Balanced FET up-converter for 6 GHz, 64-QAM radio 用于6ghz 64-QAM无线电的平衡FET上转换器
1988., IEEE MTT-S International Microwave Symposium Digest Pub Date : 1988-05-25 DOI: 10.1109/MWSYM.1988.22186
P. Bura, D. Gelerman
{"title":"Balanced FET up-converter for 6 GHz, 64-QAM radio","authors":"P. Bura, D. Gelerman","doi":"10.1109/MWSYM.1988.22186","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22186","url":null,"abstract":"A 70-MHz to 6-GHz balanced FET converter is described that has a third-order intercept point of 26 dBm, a conversion gain of 3 dB, and 33 dB of local oscillator suppression. Its highly linear performance makes it suitable for 64-QAM radio. Bit error rates (BERs) lower than 10/sup -27/ were measured at the 2.7 dBm RMS (64-QAM) output level. The upconverter shows two advantages compared with a balanced diode converter: (1) a 2-dB intermediate frequency to 6 GHz gain compared with a 6-dB loss; and (2) a higher output level for the same linearity requirement.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"47 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":"124672571","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}
引用次数: 2
A 13-channel magnetostatic wave filterbank 一个13通道静磁波滤波器组
1988., IEEE MTT-S International Microwave Symposium Digest Pub Date : 1988-05-25 DOI: 10.1109/MWSYM.1988.22172
J. Adam, M. Daniel, S. Talisa
{"title":"A 13-channel magnetostatic wave filterbank","authors":"J. Adam, M. Daniel, S. Talisa","doi":"10.1109/MWSYM.1988.22172","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22172","url":null,"abstract":"A magnetostatic wave filterbank consists of an array of narrowband magnetostatic-wave lines which have a common microstrip input transducer and separate output transducers. The center frequency of each channel is determined by a magnetic bias field supplied by a permanent magnet with a linear field gradient. A description is given of the construction and performance of an improved version of a 13-channel filterbank operating at S-band with a 24-MHz (3-dB) channel bandwidth and a 50-dB dynamic range. A comparison of present and projected performance data is given.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"118 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":"128183167","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}
引用次数: 5
Optimal CAD MESFETs frequency multipliers with and without feedback 具有和不具有反馈的最优CAD mesfet倍频器
1988., IEEE MTT-S International Microwave Symposium Digest Pub Date : 1988-05-25 DOI: 10.1109/MWSYM.1988.22226
C. Guo, E. Ngoya, R. Quéré, M. Camiade, J. Obregon
{"title":"Optimal CAD MESFETs frequency multipliers with and without feedback","authors":"C. Guo, E. Ngoya, R. Quéré, M. Camiade, J. Obregon","doi":"10.1109/MWSYM.1988.22226","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22226","url":null,"abstract":"A method is proposed for deriving the optimal operating conditions of a given MESFET needed to obtain an optimal frequency multiplier. The key point of this approach is that no topology of the embedding network is to be chosen a priori. The optimum bias voltages and the optimum load impedances (including possible feedback circuit) are found. The method has been applied to design doublers at low frequencies from 10-20 GHz and at millimeter-wave frequencies from 20-40 GHz. Although the experimental doublers are still under measurement, first results have given good agreement with theoretical predictions.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"37 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":"128276069","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}
引用次数: 10
Investigation of tapered multiple microstrip lines for VLSI circuits 用于VLSI电路的锥形多微带线研究
1988., IEEE MTT-S International Microwave Symposium Digest Pub Date : 1988-05-25 DOI: 10.1109/MWSYM.1988.22016
M. Mehalic, C. Chan, R. Mittra
{"title":"Investigation of tapered multiple microstrip lines for VLSI circuits","authors":"M. Mehalic, C. Chan, R. Mittra","doi":"10.1109/MWSYM.1988.22016","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22016","url":null,"abstract":"The S-parameters of coupled, tapered microstrip lines are calculated as function of frequency using an iteration-perturbation technique. Each tapered microstrip line is analyzed by dividing the line into small segments so that each segment can be approximated as a uniform line. For each frequency, starting with the static case, the effective dielectric constant, epsilon /sub r///sub eff/, is determined. This value is then used to compute the characteristic impedance of that section of line and the S-parameters are obtained using standard microwave analysis. The S-matrix is converted into a T-matrix, and since the sections are cascaded, all T-matrices are multiplied to drive a final T-matrix. This final T-matrix is then converted into an S-matrix, which is frequency dependent, and the mismatch introduced by the taper is obtained from the S-matrix.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"31 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":"128436170","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}
引用次数: 57
Broadbanding techniques for TEM N-way power dividers TEM n路分压器的宽带技术
1988., IEEE MTT-S International Microwave Symposium Digest Pub Date : 1988-05-25 DOI: 10.1109/MWSYM.1988.22118
A. Shor
{"title":"Broadbanding techniques for TEM N-way power dividers","authors":"A. Shor","doi":"10.1109/MWSYM.1988.22118","DOIUrl":"https://doi.org/10.1109/MWSYM.1988.22118","url":null,"abstract":"Broadband TEM power dividers have traditionally involved multisection or taper designs. The author briefly reviews compensation techniques that can be used to achieve broadband designs with one or two sections. The compensating elements can be either lumped or distributed. The suggested techniques involve transmission lines and isolation resistors. These principles are discussed for several practical designs, including broadband lumped-element power dividers. The experimental components that were fabricated based on these principles were well described by the computed results.<<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":"128976770","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}
引用次数: 8
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