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2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017)最新文献

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A parametric model of MEMS capacitive switch operating at microwave frequencies 微波频率下MEMS电容开关的参数化模型
2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017) Pub Date : 2000-06-11 DOI: 10.1109/MWSYM.2000.863581
J. Qian, G. Li, F. de Flavis
{"title":"A parametric model of MEMS capacitive switch operating at microwave frequencies","authors":"J. Qian, G. Li, F. de Flavis","doi":"10.1109/MWSYM.2000.863581","DOIUrl":"https://doi.org/10.1109/MWSYM.2000.863581","url":null,"abstract":"This paper is focused on the creation of an efficient electromagnetic model of MEMS switches which operates at microwave frequencies. The switches are first characterized using a full wave analysis based on finite element method aiming to extract the S-parameters of the switches for different geometrical dimensions. From the S-parameter data base, a scalable lumped circuit model is extracted to allow easy implementation of the switch model into available microwave CAD software. The simulated results are compared with published measured data as validation of our model.","PeriodicalId":149404,"journal":{"name":"2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124031903","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: 39
Surface-wave suppression of resonance-type periodic structures 共振型周期结构的表面波抑制
2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017) Pub Date : 2000-06-11 DOI: 10.1109/MWSYM.2000.862265
R. Hwang, S. Peng, C.C. Chen
{"title":"Surface-wave suppression of resonance-type periodic structures","authors":"R. Hwang, S. Peng, C.C. Chen","doi":"10.1109/MWSYM.2000.862265","DOIUrl":"https://doi.org/10.1109/MWSYM.2000.862265","url":null,"abstract":"Periodic structures of the resonance type are investigated with a focus on the utilization of structure dispersion to achieve a wide-band operation for the surface-wave suppression. Both approximate and exact formulations are presented to illustrate wave processes involved in the resonant structure and to develop useful criteria for design purpose.","PeriodicalId":149404,"journal":{"name":"2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125818006","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: 16
Characterization of micromachined transmission lines using MRTD (multiresolution time domain technique) 利用多分辨率时域技术表征微机械传输线
2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017) Pub Date : 2000-06-11 DOI: 10.1109/MWSYM.2000.860966
N. Bushyager, M. Tentzeris
{"title":"Characterization of micromachined transmission lines using MRTD (multiresolution time domain technique)","authors":"N. Bushyager, M. Tentzeris","doi":"10.1109/MWSYM.2000.860966","DOIUrl":"https://doi.org/10.1109/MWSYM.2000.860966","url":null,"abstract":"The Haar-based MRTD algorithm is extended to 2.5D and is applied to the characterization of micromachined transmission lines. Simulation results of /spl epsiv//sub eff/ for Si-micromachined finite-ground coplanar waveguides (FG-CPW) as a function of the undercut and for frequencies between 10 GHz and 60 GHz are compared to those obtained by use of conventional FDTD to indicate considerable savings in memory and computational time and demonstrate the adaptive modeling of multidielectric cells.","PeriodicalId":149404,"journal":{"name":"2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124737771","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
Accurate modelling of narrow-band filters for satellite communications 卫星通信窄带滤波器的精确建模
2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017) Pub Date : 2000-06-11 DOI: 10.1109/MWSYM.2000.862321
W. Hauth, D. Schmitt, M. Guglielmi
{"title":"Accurate modelling of narrow-band filters for satellite communications","authors":"W. Hauth, D. Schmitt, M. Guglielmi","doi":"10.1109/MWSYM.2000.862321","DOIUrl":"https://doi.org/10.1109/MWSYM.2000.862321","url":null,"abstract":"This paper presents the application of rigorous field theory modelling for the accurate design of narrow-band waveguide channel filters. A description is given of the problems associated with narrow-band modelling, their solution, and results obtained from test filter hardware. The precision of this approach will lead to a significant reduction of development and tuning costs, especially with high-performance multiplexers for satellite communications.","PeriodicalId":149404,"journal":{"name":"2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129700318","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: 12
A new analytical and broadband method for determining the HBT small-signal model parameters 一种确定HBT小信号模型参数的解析宽带新方法
2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017) Pub Date : 2000-06-11 DOI: 10.1109/MWSYM.2000.862235
S. Bousnina, P. Mandeville, A. Kouki, R. Surridge, F. Ghannouchi
{"title":"A new analytical and broadband method for determining the HBT small-signal model parameters","authors":"S. Bousnina, P. Mandeville, A. Kouki, R. Surridge, F. Ghannouchi","doi":"10.1109/MWSYM.2000.862235","DOIUrl":"https://doi.org/10.1109/MWSYM.2000.862235","url":null,"abstract":"An original, rigorous and accurate method for the direct extraction of HBT small-signal model parameters is proposed. The main advantage of this method is that a unique and physical-meaningful set of intrinsic parameters is extracted from the measured S-parameters for the whole frequency range of operation. The extraction procedure uses a set of closed form expressions derived without any approximation. In this sense, the extraction method is more accurate and robust in comparison with those employing special test structures or global numerical optimization techniques. Experimental validation on a HBT device with a 2/spl times/25 /spl mu/m emitter was carried out, and excellent results were obtained up to 30 GHz. The calculated data-fitting residual error over 1-30 GHz was less then 2%.","PeriodicalId":149404,"journal":{"name":"2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128493458","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: 12
X-band transmit/receive module overview x波段发射/接收模块概述
2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017) Pub Date : 2000-06-11 DOI: 10.1109/MWSYM.2000.863280
B. Kopp
{"title":"X-band transmit/receive module overview","authors":"B. Kopp","doi":"10.1109/MWSYM.2000.863280","DOIUrl":"https://doi.org/10.1109/MWSYM.2000.863280","url":null,"abstract":"This paper will discuss pertinent issues and trends in X-band transmit/receive (T/R) modules. The performance of gallium arsenide (GaAs) T/R module components and wide bandgap semiconductors will be presented along with future challenges. T/R module cost will also be addressed with an emphasis on semiconductor cost factors and issues. Finally, a brief discussion of packaging and assembly issues will be provided.","PeriodicalId":149404,"journal":{"name":"2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128753802","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: 20
Evaluation of the power absorbed in a human head model exposed to cellular phones equipped with helical antennas 人体头部模型接触装有螺旋天线的移动电话时所吸收的能量的评估
2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017) Pub Date : 2000-06-11 DOI: 10.1109/MWSYM.2000.863530
P. Bernardi, M. Cavagnaro, S. Pisa, E. Piuzzi
{"title":"Evaluation of the power absorbed in a human head model exposed to cellular phones equipped with helical antennas","authors":"P. Bernardi, M. Cavagnaro, S. Pisa, E. Piuzzi","doi":"10.1109/MWSYM.2000.863530","DOIUrl":"https://doi.org/10.1109/MWSYM.2000.863530","url":null,"abstract":"The power deposition inside the head, due to phones equipped with helical antennas, has been computed developing an FDTD code with a graded mesh. Both radiating properties of the phone (radiation impedance, radiation pattern, etc) and power absorption in an anatomical model of the human head have been evaluated for three different types of cellular phones.","PeriodicalId":149404,"journal":{"name":"2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128289896","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
Microwave backscatter modulation systems 微波反向散射调制系统
2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017) Pub Date : 2000-06-11 DOI: 10.1109/MWSYM.2000.862242
M. Kossel, H. Benedickter, R. Peter, W. Bachtold
{"title":"Microwave backscatter modulation systems","authors":"M. Kossel, H. Benedickter, R. Peter, W. Bachtold","doi":"10.1109/MWSYM.2000.862242","DOIUrl":"https://doi.org/10.1109/MWSYM.2000.862242","url":null,"abstract":"Backscatter modulation is frequently used in microwave tagging or sensor systems for interrogating remote devices. This paper describes, in the first part as an overview, three commonly used interrogator setups for backscatter modulation systems. In the second part, a novel interrogator topology is presented which is part of an active read/write microwave tagging system. A combination of backscatter modulation with frequency hopping methods is applied in the presented tagging system in order to cope with multiple reader multiple tag environments. Measured results of an experimental tagging system setup operating in the 2.4-GHz ISM band are presented which show the performance of the proposed interrogator.","PeriodicalId":149404,"journal":{"name":"2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129542671","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: 51
Spike leakage and suppression in frequency selective limiters 频率选择限制器中的尖峰泄漏和抑制
2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017) Pub Date : 2000-06-11 DOI: 10.1109/MWSYM.2000.863325
S. Stitzer
{"title":"Spike leakage and suppression in frequency selective limiters","authors":"S. Stitzer","doi":"10.1109/MWSYM.2000.863325","DOIUrl":"https://doi.org/10.1109/MWSYM.2000.863325","url":null,"abstract":"A phenomenological model of the limiting behavior of frequency selective limiters is presented. The model accurately predicts the steady state power transfer characteristic and the shape of the spike leakage pulse. A circuit technique to minimize the spike leakage has been investigated and results are shown.","PeriodicalId":149404,"journal":{"name":"2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127128289","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: 11
Improvements in losses and size of frequency tunable coplanar filter structures using MMIC negative resistance chips for multistandard mobile communication systems 多标准移动通信系统中使用MMIC负阻芯片的频率可调共面滤波器结构的损耗和尺寸的改进
2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017) Pub Date : 2000-06-11 DOI: 10.1109/MWSYM.2000.863565
G. Tanné, E. Ruis, F. Mahé, S. Toutain, F. Biron, Billonnet, B. Jarry, P. Guillon
{"title":"Improvements in losses and size of frequency tunable coplanar filter structures using MMIC negative resistance chips for multistandard mobile communication systems","authors":"G. Tanné, E. Ruis, F. Mahé, S. Toutain, F. Biron, Billonnet, B. Jarry, P. Guillon","doi":"10.1109/MWSYM.2000.863565","DOIUrl":"https://doi.org/10.1109/MWSYM.2000.863565","url":null,"abstract":"A new band-pass filter design technique is presented that uses coplanar passive interdigitated filters assisted by an MMIC active component which performs a negative resistance with an associated imaginary part in order to compensate for the losses of the passive filter and to reduce significantly the length of the resonators. A tunable version of the filter is also presented.","PeriodicalId":149404,"journal":{"name":"2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127402918","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: 12
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