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1997 IEEE MTT-S International Microwave Symposium Digest最新文献

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Microstrip-fed cylindrical slot antennas for GPS avionics applications 用于GPS航空电子应用的微带馈电圆柱槽天线
1997 IEEE MTT-S International Microwave Symposium Digest Pub Date : 1997-07-13 DOI: 10.1109/APS.1997.625409
C.H. Ho, P. K. Shumaker, K. Smith, D. Huang, J. Liao, Y.H. Wang
{"title":"Microstrip-fed cylindrical slot antennas for GPS avionics applications","authors":"C.H. Ho, P. K. Shumaker, K. Smith, D. Huang, J. Liao, Y.H. Wang","doi":"10.1109/APS.1997.625409","DOIUrl":"https://doi.org/10.1109/APS.1997.625409","url":null,"abstract":"The commercial GPS user antenna for aircraft networks requires a right-hand circular polarization and a uniform pattern coverage over approximately the entire upper hemisphere. It also demands a mechanical configuration that has no appreciable drag and needs no elaborate structural modification to the aircraft. The printed cylindrical slot antennas presented in this paper are useful in this application where low-profile installation is required on a high dynamic aircraft. These new printed GPS antennas provide compact size, low cost, ease of mass production.","PeriodicalId":337029,"journal":{"name":"1997 IEEE MTT-S International Microwave Symposium Digest","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127553945","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
Analysis of ground bond wire arrays for RFICs 射频集成电路接地键合线阵列分析
1997 IEEE MTT-S International Microwave Symposium Digest Pub Date : 1997-06-10 DOI: 10.1109/RFIC.1997.598796
H. Patterson
{"title":"Analysis of ground bond wire arrays for RFICs","authors":"H. Patterson","doi":"10.1109/RFIC.1997.598796","DOIUrl":"https://doi.org/10.1109/RFIC.1997.598796","url":null,"abstract":"This paper outlines a method for rapid computation of the inductance of arrays of ground bond wires for RFICs, thus saving a designer considerable time over using inaccurate empirical equations or slowly converging electromagnetic simulators. Results comparable in accuracy to a fully derailed PEEC electromagnetic simulation are shown.","PeriodicalId":337029,"journal":{"name":"1997 IEEE MTT-S International Microwave Symposium Digest","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122631999","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: 32
A monolithic GaAs PIN switch network for a 77 GHz automotive collision warning radar 用于77 GHz汽车碰撞预警雷达的单片GaAs PIN开关网络
1997 IEEE MTT-S International Microwave Symposium Digest Pub Date : 1997-06-10 DOI: 10.1109/RFIC.1997.598791
J. Putnam, M. Barter, K. Wood, J. Leblanc
{"title":"A monolithic GaAs PIN switch network for a 77 GHz automotive collision warning radar","authors":"J. Putnam, M. Barter, K. Wood, J. Leblanc","doi":"10.1109/RFIC.1997.598791","DOIUrl":"https://doi.org/10.1109/RFIC.1997.598791","url":null,"abstract":"This paper presents the design, fabrication, and performance of a 77 GHz monolithic GaAs PIN switch network developed for an automotive collision warning radar. The RF front end of the radar contains three control circuits which were initially realized by a hybrid approach using a duroid circuit and beam lead diodes. These three circuits were sucessfully integrated into a single 77 GHz MMIC. The MMIC uses vertical GaAs PIN diodes with a switching cutoff frequency of over 3000 GHz, attaining low insertion loss and high isolation. Insertion loss is comparable to that obtained with a hybrid circuit, while the isolation improved from a typical level of 16 dB for a single hybrid switch to over 25 dB in the MMIC. The use of GaAs PIN diodes also allowed switching speeds of less than 2 ns to be attained, a key requirement for the radar.","PeriodicalId":337029,"journal":{"name":"1997 IEEE MTT-S International Microwave Symposium Digest","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132139910","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: 13
Phase noise in coupled oscillator arrays 耦合振荡器阵列中的相位噪声
1997 IEEE MTT-S International Microwave Symposium Digest Pub Date : 1997-06-08 DOI: 10.1109/MWSYM.1997.602984
Heng-Chia Chang, X. Cao, R. York
{"title":"Phase noise in coupled oscillator arrays","authors":"Heng-Chia Chang, X. Cao, R. York","doi":"10.1109/MWSYM.1997.602984","DOIUrl":"https://doi.org/10.1109/MWSYM.1997.602984","url":null,"abstract":"A simple method to evaluate the phase noise properties of the coupled oscillators for arbitrary coupling and injection-locking topologies is presented. The method is based on the phase dynamics equation and the concept of noise admittance to represent the noise source. The PM noise of the coupled oscillators can be easily analyzed by solving the coupling matrix related to the coupling topologies, after neglecting amplitude noise and AM-to-PM conversion. An 8.5 GHz prototype array was constructed to verify the phase noise reduction of the total PM noise and the array injection locked by the external low phase noise source.","PeriodicalId":337029,"journal":{"name":"1997 IEEE MTT-S International Microwave Symposium Digest","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116952166","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
Electromagnetic analysis of planar circuitry and the dimensionality argument 平面电路的电磁分析及维数论证
1997 IEEE MTT-S International Microwave Symposium Digest Pub Date : 1997-06-08 DOI: 10.1109/MWSYM.1997.604583
L. Albasha, C. Snowden
{"title":"Electromagnetic analysis of planar circuitry and the dimensionality argument","authors":"L. Albasha, C. Snowden","doi":"10.1109/MWSYM.1997.604583","DOIUrl":"https://doi.org/10.1109/MWSYM.1997.604583","url":null,"abstract":"In this paper evaluations are carried out on the EM simulation accuracy of microstrip circuits using 2D and 3D Electromagnetic solvers, employing the TLM method. Different aspects of microstrip modelling are addressed including a new simplified excitation methodology. Illustrated simulations, supported by measured data, identify the advantages and disadvantages of modelling planar circuitry in both domains. The 3D domain provides greater accuracy due to its ability in representing more realistically the physical layout of these circuits.","PeriodicalId":337029,"journal":{"name":"1997 IEEE MTT-S International Microwave Symposium Digest","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120954631","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
MM-wave near-field scanning resistivity microscope 毫米波近场扫描电阻率显微镜
1997 IEEE MTT-S International Microwave Symposium Digest Pub Date : 1997-06-08 DOI: 10.1109/MWSYM.1997.596574
M. Golosovsky, D. Davidov
{"title":"MM-wave near-field scanning resistivity microscope","authors":"M. Golosovsky, D. Davidov","doi":"10.1109/MWSYM.1997.596574","DOIUrl":"https://doi.org/10.1109/MWSYM.1997.596574","url":null,"abstract":"We have used a near field mm-wave scanning probe to image resistivity of different materials. We compare the near-field to the far-field imaging and find an optimal distance range for the near-field imaging.","PeriodicalId":337029,"journal":{"name":"1997 IEEE MTT-S International Microwave Symposium Digest","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120977814","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
Power generation of millimeter-wave SiC avalanche transit time oscillator at high temperature 毫米波碳化硅雪崩穿越时间振荡器的高温发电
1997 IEEE MTT-S International Microwave Symposium Digest Pub Date : 1997-06-08 DOI: 10.1109/MWSYM.1997.602961
C. Meng, G.Z. Liao
{"title":"Power generation of millimeter-wave SiC avalanche transit time oscillator at high temperature","authors":"C. Meng, G.Z. Liao","doi":"10.1109/MWSYM.1997.602961","DOIUrl":"https://doi.org/10.1109/MWSYM.1997.602961","url":null,"abstract":"For the first time, millimeter-wave SiC (Silicon Carbide) IMPATT oscillator was analyzed at 500 K and 800 K with temperature dependent ionization rates and saturation velocity. The large signal simulations demonstrate the fact that SiC IMPATT devices have efficiency and power advantage over Si and GaAs IMPATT devices at millimeter-wave frequencies. The efficiencies (and d.c. power density) at 800 K for depletion widths of 0.25 /spl mu/m (200 GHz), 0.5 /spl mu/m (100 GHz) and 1 /spl mu/m (50 GHz) are 12.4% (6.7 MW/cm/sup 2/), 15% (4.5 MW/cm/sup 2/) and 15.8% (3.3 MW/cm/sup 2/), respectively, for p/sup +/n single-drift flat-profile structures.","PeriodicalId":337029,"journal":{"name":"1997 IEEE MTT-S International Microwave Symposium Digest","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120993259","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
A single-bias diode-regulated 60 GHz monolithic LNA 一个单偏置二极管调节的60 GHz单片LNA
1997 IEEE MTT-S International Microwave Symposium Digest Pub Date : 1997-06-08 DOI: 10.1109/MWSYM.1997.602828
K. Maruhashi, K. Ohata, M. Madihian
{"title":"A single-bias diode-regulated 60 GHz monolithic LNA","authors":"K. Maruhashi, K. Ohata, M. Madihian","doi":"10.1109/MWSYM.1997.602828","DOIUrl":"https://doi.org/10.1109/MWSYM.1997.602828","url":null,"abstract":"This paper presents a small-size 60 GHz-band GaAs MMIC LNA with a single bias supply. A diode-regulated self-bias circuit was proposed and demonstrated for suppressing the FET drain current variations due to threshold voltage nonuniformities. The developed three-stage MMIC LNA exhibited an average noise figure of 3.3 dB with 18 dB gain from 58 to 62 GHz. The chip size of the LNA is 1.85 mm/spl times/1.07 mm/spl times/0.04 mm.","PeriodicalId":337029,"journal":{"name":"1997 IEEE MTT-S International Microwave Symposium Digest","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121241324","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: 4
C band ferrite microstrip limiter C波段铁氧体微带限制器
1997 IEEE MTT-S International Microwave Symposium Digest Pub Date : 1997-06-08 DOI: 10.1109/MWSYM.1997.602999
J.J. Green
{"title":"C band ferrite microstrip limiter","authors":"J.J. Green","doi":"10.1109/MWSYM.1997.602999","DOIUrl":"https://doi.org/10.1109/MWSYM.1997.602999","url":null,"abstract":"A microstrip line on a polycrystalline yttrium iron garnet substrate was measured as a function of incident microwave power level to determine power limiting. Properties acceptable to system designers were found for the low level insertion loss, recovery time, temperature performance and response to a frequency modulated pulse.","PeriodicalId":337029,"journal":{"name":"1997 IEEE MTT-S International Microwave Symposium Digest","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127143212","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
Dual mode combined dielectric and conductor loaded cavity filters 双模组合介质和导体负载腔滤波器
1997 IEEE MTT-S International Microwave Symposium Digest Pub Date : 1997-06-08 DOI: 10.1109/MWSYM.1997.602994
Chi Wang, K. Zaki, A. Atia
{"title":"Dual mode combined dielectric and conductor loaded cavity filters","authors":"Chi Wang, K. Zaki, A. Atia","doi":"10.1109/MWSYM.1997.602994","DOIUrl":"https://doi.org/10.1109/MWSYM.1997.602994","url":null,"abstract":"A new configuration of dual mode combined dielectric and conductor loaded cavity filter is presented. Using one or two conductor loaded cavities with dielectric loaded cavities, both low loss and excellent spurious performance are achieved. Resonant frequencies, unloaded Q and the fields of both resonators are rigorously computed by mode matching method. The coupling between two resonators is computed by small aperture approximation theory. Three different types of 4-pole elliptic function filters under same condition are constructed. Insertion loss and spurious performance of the filters are compared. Experimental results verify the theory.","PeriodicalId":337029,"journal":{"name":"1997 IEEE MTT-S International Microwave Symposium Digest","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127254233","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
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