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2005 Asia-Pacific Microwave Conference Proceedings最新文献

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A novel coaxial probe waveguide to microstrip transition 一种新型同轴探测波导微带跃迁
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606282
K. Wang, Zhihong Chen, Yumei Zhou, J. Hao
{"title":"A novel coaxial probe waveguide to microstrip transition","authors":"K. Wang, Zhihong Chen, Yumei Zhou, J. Hao","doi":"10.1109/APMC.2005.1606282","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606282","url":null,"abstract":"In this paper, a modified coaxial probe waveguide-to-microstrip transition structure at K-band is proposed. The transition uses two kinds of coaxial probes and has hermetic characteristics. It can also be used in other band, such as Ka-band. The structure is demonstrated for designing the transition. HFSS simulation and measurement results for the transition structure have been compared in terms of |S/sub 21/|. The comparison shows that the measurement agrees well with the simulation result. The measurement has shown 0.5 dB insertion loss.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"57 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":"116975448","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
Coaxial fed hexagonal dielectric resonator antenna 同轴馈电六方介质谐振器天线
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606850
V. Hamsakutty, A. V. Praveen Kumar, J. Yohannan, K. T. Mathew
{"title":"Coaxial fed hexagonal dielectric resonator antenna","authors":"V. Hamsakutty, A. V. Praveen Kumar, J. Yohannan, K. T. Mathew","doi":"10.1109/APMC.2005.1606850","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606850","url":null,"abstract":"A coaxial fed hexagonal dielectric resonator antenna (HDRA) is investigated experimentally. The return loss, impedance matching, radiation pattern, beam widths and gain of the antenna are measured and discussed. The antenna resonates at 2.05GHz with a 3dB bandwidth of 2.4% and an average gain of /spl sim/7.7dB in the band.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"61 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":"116988936","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
Transmission line matching effects on the performance of shunt-C/series-tuned and series-L/parallel-tuned class-E amplifiers 传输线匹配对并联- c /串调谐和串- l /并联调谐e类放大器性能的影响
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606588
T. Mury, V. Fusco
{"title":"Transmission line matching effects on the performance of shunt-C/series-tuned and series-L/parallel-tuned class-E amplifiers","authors":"T. Mury, V. Fusco","doi":"10.1109/APMC.2005.1606588","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606588","url":null,"abstract":"The impact that the transmission-line load-network has on the performance of the recently introduced series-L/parallel-tuned class-E amplifier and the classic shunt-C/series-tuned configuration when compared to optimally derived lumped load networks is discussed. In addition an improved load topology which facilitates harmonic suppression of up to 5th order as required for maximum class-E efficiency as well as load resistance transformation and a design procedure involving the use of Kuroda's identity and Richard's transformation enable a distributed synthesis process which dispenses with the need for iterative tuning as previously required in order to achieve optimum class-E operation.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"109 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":"117200993","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
Study of ISMLink production test in EM shielded test fixture 电磁屏蔽试验夹具ISMLink生产试验研究
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606540
Xin Geng
{"title":"Study of ISMLink production test in EM shielded test fixture","authors":"Xin Geng","doi":"10.1109/APMC.2005.1606540","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606540","url":null,"abstract":"A novel test methodology for ISMLink production test that provides several different levels of testing from a single test is presented in the paper. This paper provides helpful information to use both before and during the creation of test hardware and software. It includes test philosophies, instrumentation requirements, testing level, testing components and configuration for ISMLink production test. This paper also contains measured values and recommendations that should be followed in an effort to get the ISMLink production test environment operational.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"69 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":"116040388","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 FMM-CG-FFT algorithm for efficient analysis of large-scale periodic structures with finite sizes 精确FMM-CG-FFT算法用于有限尺寸大尺度周期结构的高效分析
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606676
W. Lu, T. Cui
{"title":"Accurate FMM-CG-FFT algorithm for efficient analysis of large-scale periodic structures with finite sizes","authors":"W. Lu, T. Cui","doi":"10.1109/APMC.2005.1606676","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606676","url":null,"abstract":"In this paper, a new fast and accurate algorithm is specially designed to solve the scattering and radiation problem of large-scale periodic structures with finite sizes, in which the unit cell has an arbitrary shape. The new method which is referred as FMM-CG-FFT employs the priority of both the fast multiple method (FMM) and the conjugate-gradient fast Fourier transform (CG-FFT). Numerical results prove the efficiency and accuracy of the new algorithm.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"55 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":"116339801","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
A high linearity InGaP/GaAs HBT up-conversion double balanced mixer with common base drive stage 一种高线性InGaP/GaAs HBT上转换双平衡混频器，具有公共基极驱动级
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606504
Se-Hwan Kim, Sang-Hun Lee, B. Shrestha, Sun-jin Kim, G. P. Kennedy, Nam-Young Kim, S. Cheon
{"title":"A high linearity InGaP/GaAs HBT up-conversion double balanced mixer with common base drive stage","authors":"Se-Hwan Kim, Sang-Hun Lee, B. Shrestha, Sun-jin Kim, G. P. Kennedy, Nam-Young Kim, S. Cheon","doi":"10.1109/APMC.2005.1606504","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606504","url":null,"abstract":"A high linearity double balanced mixer has been developed using InGaP/GaAs HBT technology. Features of the design include a common base drive stage and a common collector output buffer amplifier. The up-conversion mixer shows an input-referred 1-dB compression point (P/sub 1dB, IN/) of 15 dBm and a third order input intercept point (IIP3) of 21.6 dBm. The chip size of the developed mixer is 1.17 mm /spl times/ 1 mm. The isolation of LO-RF and LO-IF in the up-conversion mixer shows 58.5 dB and 86.2 dB, respectively.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"169 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":"116390890","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
Self-fields effects on gain in an ion-channel free-electron laser 离子通道自由电子激光器中自场对增益的影响
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1607057
M. Esmaeilzadeh
{"title":"Self-fields effects on gain in an ion-channel free-electron laser","authors":"M. Esmaeilzadeh","doi":"10.1109/APMC.2005.1607057","DOIUrl":"https://doi.org/10.1109/APMC.2005.1607057","url":null,"abstract":"A theory of gain in a free-electron laser with helical wiggler and ion-channel guiding in the presence of the self-electric and self-magnetic fields is presented. A formula for the gain in the low-gain-per-pass limit is derived. It is shown that for group I orbits, gain decrement is obtained relative to the absence of the self fields. The behavior of the gain for group II orbits in the presence of the self-fields is very interesting because, gain enhancement is occurred in this group.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"905 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":"116398931","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
High-directivity patch antenna with both perfect magnetic conductor substrate and photonic bandgap cover 具有完美磁性导体衬底和光子带隙覆盖的高指向性贴片天线
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606209
Fang-ming Zhu, Qing-chun Lin
{"title":"High-directivity patch antenna with both perfect magnetic conductor substrate and photonic bandgap cover","authors":"Fang-ming Zhu, Qing-chun Lin","doi":"10.1109/APMC.2005.1606209","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606209","url":null,"abstract":"A new patch antenna system, which has both a perfect magnetic conductor (PMC) substrate and a photonic bandgap (PBG) cover is introduced. The impedance, radiation pattern, and directivity of such an antenna are studied. The numerical results show that the directivity of the patch antenna is improved dramatically in the presence of the PMC structure and the PBG cover. The physical reasons for the improvement are also given.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"20 1 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":"116403767","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
Effect of temperature on current voltage characteristics of lattice mismatched Al/sub m/Ga/sub 1-m/N/GaN HEMTs 温度对晶格错配Al/sub -m/ Ga/sub -m/N/GaN hemt电流电压特性的影响
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606585
Parvesh, S. Pandeyb, S. Haldarc, M. Gupta, R. Gupta
{"title":"Effect of temperature on current voltage characteristics of lattice mismatched Al/sub m/Ga/sub 1-m/N/GaN HEMTs","authors":"Parvesh, S. Pandeyb, S. Haldarc, M. Gupta, R. Gupta","doi":"10.1109/APMC.2005.1606585","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606585","url":null,"abstract":"In this paper we present an analytical model of temperature dependence of an AlGaN/GaN HEMTs. The results of the theoretical study concerning the temperature dependence of electron mobility in two dimensional electron gas (2DEG) confined at the AlGaN/GaN interface is reported. The increase in temperature results in decrease in the saturation carrier velocity in HEMTs, which in turn reduces the drain current. The effect of temperature on transconductance of device has also been studied. The results are in good agreement with the existing experimental data.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"507 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":"123228803","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
Preamplifier design with narrow band for fiber-optic millimeter-wave wireless LAN 光纤毫米波无线局域网窄带前置放大器设计
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606505
Seon-eui Hong, E. Nam, Jong-Won Lim, H. Ahn, Hae-cheon Kim, J. Pack
{"title":"Preamplifier design with narrow band for fiber-optic millimeter-wave wireless LAN","authors":"Seon-eui Hong, E. Nam, Jong-Won Lim, H. Ahn, Hae-cheon Kim, J. Pack","doi":"10.1109/APMC.2005.1606505","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606505","url":null,"abstract":"A narrow-band preamplifier for fiber-optic millimeter-wave wireless system is presented based on a fully stabilized pseudomorphic high electron mobility transistor (PHEMT) 0.12 /spl mu/m technology. The preamplifiers are designed with shunt feedback and T-section matching networks. These matching networks are realized narrow-band filtering function. A single 4/spl times/1.5 mm chip, with four amplifying stages, shows transimpedance gain of 53 dB/spl Omega/, with idB/spl Omega/, ripple around the center frequency.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"496 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":"123446971","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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