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1992 22nd European Microwave Conference最新文献

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Broadband Filter Circuits using an Extended Suspended Substrate Transmission Line Configuration 采用扩展悬浮基板传输线配置的宽带滤波电路
1992 22nd European Microwave Conference Pub Date : 1992-10-01 DOI: 10.1109/EUMA.1992.335709
W. Menzel
{"title":"Broadband Filter Circuits using an Extended Suspended Substrate Transmission Line Configuration","authors":"W. Menzel","doi":"10.1109/EUMA.1992.335709","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335709","url":null,"abstract":"Suspended stripline has proven to be a low loss transmission line, especially for filters. Making full use of both sides of the substrate, including standard stripline, coupled stripline and microstrip, very broadband components can be realized. This is demonstrated by a 2.5 GHz low-pass filter with high isolation up to at least nearly 17 GHz, high-pass filters up to 30 GHz and a broadband (3.5-7.5 GHz) bandpass without higher pass-bands up to 40 GHz.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121669781","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: 19
Microwave Dielectric Resonator Discriminator Oscillator 微波介电谐振器鉴别振荡器
1992 22nd European Microwave Conference Pub Date : 1992-10-01 DOI: 10.1109/EUMA.1992.335730
C. Buoli, G. Mora, T. Turillo
{"title":"Microwave Dielectric Resonator Discriminator Oscillator","authors":"C. Buoli, G. Mora, T. Turillo","doi":"10.1109/EUMA.1992.335730","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335730","url":null,"abstract":"A new method (**) to improve the phase noise near the carrier of microwave frequency sources, particularly suitable for Low Capacity Digital Radio (LCDR) systems, is here presented. This is obtained including in a DRO a frequency discriminator, realized by means of the same oscillator cavity. The transmitted and reflected waves of the cavity are measured, combined and detected by a couple of diodes with low 1/f noise. These signals are compared in a differential amplifier that drives a varactor phase-shifter set between the active device and the cavity. In this way the reflection coefficient phase of the active device can be changed in order to correct its phase transients. As a result, lower the 1/f noise of the diodes with respect to the 1/f noise of the active device, greater the reduction of the oscillator phase noise. This technique applied to a microwave DRO may replace the synthesizer architecture achieving the same performance with lower circuit complexity, greater hardware compactness and lower cost.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114969562","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
Design of Intermediate-Bandwidth Dielectric Resonator Filters 中带宽介质谐振器滤波器的设计
1992 22nd European Microwave Conference Pub Date : 1992-10-01 DOI: 10.1109/EUMA.1992.335888
A. Abramowicz, J. Modelski
{"title":"Design of Intermediate-Bandwidth Dielectric Resonator Filters","authors":"A. Abramowicz, J. Modelski","doi":"10.1109/EUMA.1992.335888","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335888","url":null,"abstract":"The method of the design of the intermediate-bandwidth dielectric resonator bandpass filters is presented. The results of the analysis of the coupling and mechanical tuning structures are discussed. The realizations of the trial X-band filters with 6% bandwidth are described.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"11 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122843789","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 the Aspects of Selecting the Symmetrical Condensed Node or the Expanded Node Modelling for Electromagnetic Simulations 电磁仿真中对称压缩节点与扩展节点建模的选择问题
1992 22nd European Microwave Conference Pub Date : 1992-10-01 DOI: 10.1109/EUMA.1992.335692
M. Celuch-Marcysiak, W. Gwarek
{"title":"On the Aspects of Selecting the Symmetrical Condensed Node or the Expanded Node Modelling for Electromagnetic Simulations","authors":"M. Celuch-Marcysiak, W. Gwarek","doi":"10.1109/EUMA.1992.335692","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335692","url":null,"abstract":"In view of recent research showing equivalence between various versions of the FD-TD and TLM methods we propose that comparative studies of time - domain methods be now directed towards distinguishing Expanded Node modelling and Symmetrical Condensed Node modelling. Each of these types of modelling can be used to formulate algorithms in either FD-TD or TLM notations. The choice of notation influences effectiveness of the analysis, but accuracy is essentially determined by the type of modelling. We derive an analytic function which describes dispersion relations for the Symmetrical Condensed Node (SCN) modelling. Our formulation provides the unprecedented basis for thorough comparison with the expanded node modelling, in terms of overall accuracy, reliability and convergence properties. Theoretical predictions are verified on several examples. Detailed examination of inherent computational efficiency of the ExpN and SCN models for 2-D, 2-DV and 3-D problems is supplemented.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130136784","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
Electromagnetic Calculations using the FDTD-Method for the Analysis of Waveguide Applicators for Microwave Hyperthermia 用fdtd方法分析微波热疗波导应用器的电磁计算
1992 22nd European Microwave Conference Pub Date : 1992-10-01 DOI: 10.1109/EUMA.1992.335755
L. Martens, J. Van Hese, P. de Langhe, D. De Zutter, C. De Wagter
{"title":"Electromagnetic Calculations using the FDTD-Method for the Analysis of Waveguide Applicators for Microwave Hyperthermia","authors":"L. Martens, J. Van Hese, P. de Langhe, D. De Zutter, C. De Wagter","doi":"10.1109/EUMA.1992.335755","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335755","url":null,"abstract":"Electromagnetic calculations for waveguide applicators using the Finite Difference Time Domain (FDTD) method are presented. The algorithm is applied to a water-filled applicator and the computed results are compared to experimental results in a phantom of saline-solution. Influence of the loading on the near field of the applicator is illustrated in the case where a thin plexi-glass plate is inserted between the applicator and the phantom.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130903348","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
22 GHZ Band Downconverters for DBS 用于DBS的22 GHZ频段下变频器
1992 22nd European Microwave Conference Pub Date : 1992-10-01 DOI: 10.1109/EUMA.1992.335726
C. Howson, C. Guo, G. Haquet, M. Fujimoto
{"title":"22 GHZ Band Downconverters for DBS","authors":"C. Howson, C. Guo, G. Haquet, M. Fujimoto","doi":"10.1109/EUMA.1992.335726","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335726","url":null,"abstract":"Low-noise downconverters for 22GHz DBS (Direct Broadcasting Satellite) reception have been developed using low-cost components that are already marketed for 12GHz DBS. Two topologies using a 10GHz LO (Local Oscillator), one with a subharmonically pumped mixer and the other with double frequency conversion, have been evaluated. All the circuits developed use packaged components on soft substrate and are compatible with mass-production techniques. A total converter noise figure of less than 1.8dB has been achieved over the frequency range 21.4GHz to 22.0GHz.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131126592","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
Microstrip Band-Pass Filters using Nonuniform Coupled Lines 使用非均匀耦合线的微带带通滤波器
1992 22nd European Microwave Conference Pub Date : 1992-10-01 DOI: 10.1109/EUMA.1992.335708
S. Uysal, J. Watkins
{"title":"Microstrip Band-Pass Filters using Nonuniform Coupled Lines","authors":"S. Uysal, J. Watkins","doi":"10.1109/EUMA.1992.335708","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335708","url":null,"abstract":"Dummy channels are introduced into the coupled region to achieve physical realizability and significantly increase rejection in nonuniform type coupled-line filters. Theory is verified by a filter circuit designed on alumina substrate to demonstrate 4 different band-pass filters using two cascaded coupler-filters with 50% bandwidth at X-band. Rejection in excess of 40 dB with sharp passband skirts have been achieved.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116459300","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
Novel Implementation of Broadband Detector 宽带检测器的新实现
1992 22nd European Microwave Conference Pub Date : 1992-10-01 DOI: 10.1109/EUMA.1992.335887
T. Mcconnell
{"title":"Novel Implementation of Broadband Detector","authors":"T. Mcconnell","doi":"10.1109/EUMA.1992.335887","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335887","url":null,"abstract":"A new design and implementation of a diode based broadband detector module operating in excess of 40 GHz is presented. To accommodate the broadband nature, the external interface is coaxial while coplanar waveguide is used as the internal microwave transmission medium. A high performance coax to coplanar transition is incorporated into the design. By making broadband return loss measurements of prototype modules and establishing the dc characteristics of the selected diode, an equivalent circuit of the component can be deduced. This model is used to simulate the frequency response of the detector and provide the basis for optimisation. Measurements and simulated results in the range 10 MHz to 40 GHz are presented. Also shown is the means by which the frequency response can be optimised by varying a circuit parameter without any degradation to return loss.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116331068","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: 1
Above 8GHz Static T-Flip-Flop Operation using FT=22.9GHz GaAs MESFETs 使用FT=22.9GHz GaAs mesfet的8GHz以上静态t触发器操作
1992 22nd European Microwave Conference Pub Date : 1992-10-01 DOI: 10.1109/EUMA.1992.335686
J. Riishoj, P. Danielsen
{"title":"Above 8GHz Static T-Flip-Flop Operation using FT=22.9GHz GaAs MESFETs","authors":"J. Riishoj, P. Danielsen","doi":"10.1109/EUMA.1992.335686","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335686","url":null,"abstract":"A static SCFL Toggle Flip-Flop GaAs IC having maximum operating frequency of Fdiv=8.25GHz has been designed using a commercially available GaAs MESFET foundry service. The average Ft for the present wafer is Ft=22.9GHz giving a very high Fdiv/Ft-ratio of Fdiv/Ft=0.36. In addition output voltage transition times of Tt(20%-80%)=35ps are obtained by implementation of a novel output driver design.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131219734","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
Digitally Controlled 10.5 GHz Complex Weight Circuit for Null Steering Arrays 用于零转向阵列的数字控制10.5 GHz复杂重量电路
1992 22nd European Microwave Conference Pub Date : 1992-10-01 DOI: 10.1109/EUMA.1992.335775
S. Nylund, F. Paoloni
{"title":"Digitally Controlled 10.5 GHz Complex Weight Circuit for Null Steering Arrays","authors":"S. Nylund, F. Paoloni","doi":"10.1109/EUMA.1992.335775","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335775","url":null,"abstract":"Null steering array antennas require proper selection of the amplitude and phase on the excitation of each element. This paper describes a microstrip PIN-diode circuit that is capable of changing amplitude and phase at X-band frequencies. The device consists of a pair of variable attenuators and one-bit 180°phase-shifters. Digital control circuits have been built that use pre-stored calibration data. Measurements indicate that accurate attenuation and phase change can be obtained over all four quadrants of the complex plane.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131262070","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
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