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2005 Asia-Pacific Microwave Conference Proceedings最新文献

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Broadband 7 GHz VCO in mHEMT technology mHEMT技术中的宽带7ghz压控振荡器
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606413
M. Ferndahl, H. Zirath
{"title":"Broadband 7 GHz VCO in mHEMT technology","authors":"M. Ferndahl, H. Zirath","doi":"10.1109/APMC.2005.1606413","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606413","url":null,"abstract":"The design and characterization of a broadband VCO in a 0.15 /spl mu/m mHEMT technology is presented. The VCO have an output power of 0 dBm and a broad output frequency from 6.5 to 7.4 GHz using a wide multi fingered mHEMT as varactor. Phase noise is -87 dBc/Hz at 100 kHz offset exhibiting a 30 dB/decade slope due to large flicker noise sources. A comparison both to a similar pHEMT VCO and other pHEMT VCOs in the literature is included.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125673827","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: 7
An HMIC I/Q modulator/demodulator for RFID applications 用于RFID应用的HMIC I/Q调制器/解调器
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606496
T. Boles, R. Houlihan, C. Weigand
{"title":"An HMIC I/Q modulator/demodulator for RFID applications","authors":"T. Boles, R. Houlihan, C. Weigand","doi":"10.1109/APMC.2005.1606496","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606496","url":null,"abstract":"HMIC is a microwave and mmW integrated circuit topology that can create three dimensional structures based upon an intimate marriage of silicon and glass at a wafer scale level which enable high performance, low loss, lower cost realizations of many of the classic hybrid MMIC's. In addition, the unique nature of the bonding together of these two dissimilar materials into common substrate allows the monolithic insertion of active elements in combination with low loss, high Q, lumped element passive components to produce microwave circuits that can be realized no other way or at as low a cost. This paper will illustrate the results of the development of an integrated I/Q modulator/demodulator MMIC for RFID reader applications using HMIC technology as an integration medium. The resultant RF performance improvements and advantages of the modulator and the overall effect on RFID wireless systems operation will be presented.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"442 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125779272","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 novel technique for solving EM problems of multilayered anisotropic spheres: a modified VWF method 求解多层各向异性球体电磁问题的新技术:改进的VWF法
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606259
C. Qiu, Lewei Li, S. Zouhdi
{"title":"A novel technique for solving EM problems of multilayered anisotropic spheres: a modified VWF method","authors":"C. Qiu, Lewei Li, S. Zouhdi","doi":"10.1109/APMC.2005.1606259","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606259","url":null,"abstract":"This paper presents a novel method to solve both the scattering and radiation problems in the presence of the multilayered anisotropic spheres. A set of modified spherical vector wave functions (VWFs) is formulated and the fields can thus be expressed in terms of these VWFs. Based on those modified VWFs, dyadic Green's functions (DGFs) are constructed for radially stratified anisotropic spheres. With those associated scattering coefficients obtained by applying boundary conditions at each interface, the fields can be represented with arbitrary source locations. The effects of anisotropy on RCS are considered for absorbing spheres and the dependence of RCS on single and joint anisotropy are studied by using the current method.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125990176","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 compatible multi-polarity control signals multi-octave 180/spl deg/ MMIC phase shifter without driver 一个兼容的多极控制信号多倍频程180/spl度/ MMIC移相器无驱动器
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606493
Yong-sheng Dai, Xiao Zhang
{"title":"A compatible multi-polarity control signals multi-octave 180/spl deg/ MMIC phase shifter without driver","authors":"Yong-sheng Dai, Xiao Zhang","doi":"10.1109/APMC.2005.1606493","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606493","url":null,"abstract":"Design, fabrication and characterization of a compatible multi-polarity control signals multi-octave 180/spl deg/ MMIC phase shifter with either digital or analogue control without driver have been demonstrated in this paper. The main electrical parameters of the phase shifter: low peak phase error /spl les/180/spl plusmn/6/spl deg/, low VSWR /spl les/1.7, low insertion loss variations /spl les/3.8/spl plusmn/0.7dB, over their entire operational bandwidth (4-16 GHz) and small size (4.2mm/spl times/0.64mm/spl times/0.1mm) is obtained.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131360652","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
Research on rectangular patch antenna with magnetic substrate 磁性基板矩形贴片天线的研究
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606953
Yunlin Liu, Yong Wang, Rugui Yang
{"title":"Research on rectangular patch antenna with magnetic substrate","authors":"Yunlin Liu, Yong Wang, Rugui Yang","doi":"10.1109/APMC.2005.1606953","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606953","url":null,"abstract":"Theoretical analysis and experimental results of the bandwidth of one rectangular patch antenna with macromolecule magnetic substrate are presented in this paper. And the results showed that magnetic property results in wide impedance bandwidth. Experimental study on a new kind of compact stacked quarter wavelength patch antenna is presented also in this paper. The results showed the impedance bandwidth of this kind of patch antenna is double than the one of the common quarter wavelength patch antenna.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131929858","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 and performance of a 1.6-2.2GHz low-noise, high gain dual amplifier in GaAs E-pHEMT GaAs E-pHEMT中1.6-2.2GHz低噪声高增益双放大器的设计与性能
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606596
T. Chong, S. Rendava
{"title":"Design and performance of a 1.6-2.2GHz low-noise, high gain dual amplifier in GaAs E-pHEMT","authors":"T. Chong, S. Rendava","doi":"10.1109/APMC.2005.1606596","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606596","url":null,"abstract":"The design and realization of a dual low-noise amplifier (LNA) module in the 2GHz band suitable for balanced receiver front-end application is presented. The module was designed to operate from a 5V supply with a control voltage for convenient adjustment of bias condition for optimum noise figure. The MMIC portion of the design was fabricated in Agilent Technologies' proprietary 0.5/spl mu/m GaAs enhancement-mode pseudomorphic high-electron-mobility transistor (e-pHEMT) process. This module is suitable for balanced amplifier applications when combined with external 3-dB hybrids, giving an extremely low noise figure (NF) of 0.55-0.8dB, coupled with a moderately high OIP3 (output third order intercept point) of 38-42dBm at 28-32dB gain. It is also capable of delivering a P-1dB of more than 20dBm at 180mA current drain.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132075603","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
An analytical approach of minimizing VCO phase noise 最小化压控振荡器相位噪声的分析方法
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606590
U. Rohde, A. Poddar
{"title":"An analytical approach of minimizing VCO phase noise","authors":"U. Rohde, A. Poddar","doi":"10.1109/APMC.2005.1606590","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606590","url":null,"abstract":"Low noise signal sources are crucial for the development of high bit rate wireless link multi-standard system such as point-to-point radios or multipoint radios. Since the VCO is one of the key contributors to overall phase noise performance, it is important to reduce its contribution as much as possible. This paper presents an analytical method to optimize the noise with which it is possible to determine the component parameters that mostly affect the phase noise performance for a given topology. The optimization technique is demonstrated through a design example, leading to ultra low noise VCO at 1 GHz. The design approach is not limited to this frequency, and can be extended to other higher frequency band. The measured phase noise at 10 kHz offset is better than -125 dBc/Hz, which agrees with the calculated and simulated values within 3 dB.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130010472","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
Design waveguide filters and multiplexers by fullwave equivalent circuit approach 用全波等效电路方法设计波导滤波器和多路复用器
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606295
Xuying Wen, Jun Xu, Bingzhong Wang, L. Xue
{"title":"Design waveguide filters and multiplexers by fullwave equivalent circuit approach","authors":"Xuying Wen, Jun Xu, Bingzhong Wang, L. Xue","doi":"10.1109/APMC.2005.1606295","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606295","url":null,"abstract":"This article addresses the basic method of fullwave equivalent circuit, and presents fullwave equivalent circuit model according to element structures of waveguide filter and multiplexer. The article provides the design example of waveguide filter and multiplexer. The example fully expresses the character of fullwave equivalent circuit. Those are high precision, high speed and commercial application.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130199697","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
Parallel multi-level fast multipole algorithm with combined field integral equation on distributed memory system 分布式存储系统上联合场积分方程的并行多级快速多极算法
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606567
Lin Yun, Hu Jun, Nie Zai Ping, C. Y. Pin
{"title":"Parallel multi-level fast multipole algorithm with combined field integral equation on distributed memory system","authors":"Lin Yun, Hu Jun, Nie Zai Ping, C. Y. Pin","doi":"10.1109/APMC.2005.1606567","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606567","url":null,"abstract":"Although the multilevel fast multipole algorithm (MLFMA) has been the most popular method in electromagnetic field computation, the limitation of both CPU speed and memory size make it still difficult to solve the scattering problems from very large scale structures using this method. In this paper, we implemented the CFIE (combined filed integral equation) into our parallel MLFMA solving the electromagnetic scattering problem of an electrical-large PEC targets on the message passing interface (MPI) in a cluster system. A lot of numerical results are represented in this paper. From the numerical result presented a very good convergence speed is achieved, and the scattering from a very large scale problem which has about 1 million unknowns is solved. Finally, the result is presented and discussed in this paper.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130480728","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 transistor measurement setup for microwave high power amplifiers design 微波大功率放大器晶体管测量装置的设计
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1607002
J. Teyssier, D. Barataud, C. Charbonniaud, F. de Groote, J. Verspecht, J. Nebus, R. Quéré
{"title":"A transistor measurement setup for microwave high power amplifiers design","authors":"J. Teyssier, D. Barataud, C. Charbonniaud, F. de Groote, J. Verspecht, J. Nebus, R. Quéré","doi":"10.1109/APMC.2005.1607002","DOIUrl":"https://doi.org/10.1109/APMC.2005.1607002","url":null,"abstract":"This paper presents our view of a powerful and versatile measurement setup dedicated to nonlinear characterization and modeling of high power transistor. Our bench with on-wafer capabilities captures time domain waveforms under passive load-pull and source-pull conditions. Moreover, harmonic load-pull and pulsed mode of I(V) and/or RF operation are available. Due to the combination of several innovative features, high power measurements up to 18 GHz and 50 Watts with a gamma load factor up to 0.85 at the probe tips are made possible.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133913636","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
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