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2005 Asia-Pacific Microwave Conference Proceedings最新文献

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Research on simulation computation of the Q/sub ext/ of cavities 腔体Q/sub /的模拟计算研究
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606220
Lin Fu-min
{"title":"Research on simulation computation of the Q/sub ext/ of cavities","authors":"Lin Fu-min","doi":"10.1109/APMC.2005.1606220","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606220","url":null,"abstract":"The principle of a method of simulation computation of the Q/sub ext/ of cavities, which is based on the relationship of reflectance's phase with frequency, is introduced, and the failure of the method is analyzed. It is concluded by quantitative analysis that the partial inductance coupling and the coupling slots in /spl pi/ mode double-gap cavities may bring about the failure of the method.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"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":"125399870","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
Microwave composite right/left-handed metamaterials and devices 微波复合左/右超材料及器件
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606179
A. Lai, T. Itoh
{"title":"Microwave composite right/left-handed metamaterials and devices","authors":"A. Lai, T. Itoh","doi":"10.1109/APMC.2005.1606179","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606179","url":null,"abstract":"In this paper, practical left-handed (LH) metamaterials known as composite right/left-handed (CRLH) metamaterials for microwave devices are discussed. In particular, recent advances and novel devices based on the CRLH metamaterial at the authors' research lab are presented.","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":"126652573","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
Wavelets modeling of inductance of interconnect in digital circuits of mixed-signal ICs 混合信号集成电路中互连电感的小波建模
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606515
Wang Jun
{"title":"Wavelets modeling of inductance of interconnect in digital circuits of mixed-signal ICs","authors":"Wang Jun","doi":"10.1109/APMC.2005.1606515","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606515","url":null,"abstract":"The effective inductance modeling of interconnects in mixed-signal ICs using the wavelets is exhaustively analyzed and four steps construction algorithm of sparse inductance matrix is derived which fits simulated results well. To extract the numerical value of sparse inductance matrix effectively, a function of interpolating wavelet basis is introduced in the construction algorithm to compress the original dense matrix. Moreover, the increasing importance of inductive effect of interconnects is discussed and fundamental limitations for substrate noise on mixed-signal ICs caused by inductance coupling are pointed out. The numerical results show that the proposed model and its extraction algorithm have many advantages of run time and memory space, which make the flexible and fast simulation in the initial stage of design possible. It is also shown that the consideration of on-chip inductance and its accurate extraction help to characterize the substrate noise in frequency domain.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"23 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":"126848289","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 alternating impedance electromagnetic bandgap (AI-EBG) structure by transmission line network method 用传输线网法分析交流阻抗电磁带隙(AI-EBG)结构
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606742
Jinwoo Choi, M. Swaminathan
{"title":"Analysis of alternating impedance electromagnetic bandgap (AI-EBG) structure by transmission line network method","authors":"Jinwoo Choi, M. Swaminathan","doi":"10.1109/APMC.2005.1606742","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606742","url":null,"abstract":"This paper presents an efficient analysis of alternating impedance electromagnetic bandgap (AI-EBG) structure using transmission line network (TLN) method. The AI-EBG structure has shown excellent noise suppression in realistic mixed-signal systems. However, there is no efficient way to get dispersion diagram of the AI-EBG structure for a fast design process. Transmission line network (TLN) method has been applied to get the dispersion diagram of the AI-EBG structure for the first time. The analytic equation for the dispersion diagram of the AI-EBG structure has been driven successfully. Compared with full-wave solvers, this method is extremely faster and produces quite accurate results.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"393 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":"115993251","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
Optimized design of a low-pass filter using defected ground structures 利用缺陷接地结构的低通滤波器的优化设计
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606298
X. Guan, Guohui Li, Zhewang Ma
{"title":"Optimized design of a low-pass filter using defected ground structures","authors":"X. Guan, Guohui Li, Zhewang Ma","doi":"10.1109/APMC.2005.1606298","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606298","url":null,"abstract":"A novel three-pole low-pass filter is designed using low impedance microstrip line and one DGS section in this paper. An equivalent circuit model of a defected ground structure (DGS) is applied to study the characteristics of DGS. Parameters of the model are extracted from the EM simulation results by matching it to a one-pole low-pass filter. The lumped element values of the low-pass filter are optimized in circuit simulator by applying the circuit model of DGS. It is demonstrated that the filter can provide a sharp rate of attenuation in the stop-band as predicted. To further verify this method, a filter using DGS is fabricated measured. The comparison between simulation and measurement confirms the effectiveness of the proposed method.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"88 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":"116038119","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
UWB chip antenna design using LTCC multilayer technology for mobile applications 采用LTCC多层技术设计UWB芯片天线，用于移动应用
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606570
Chun-Yih Wu, Chia-Lun Tang, A. Chen
{"title":"UWB chip antenna design using LTCC multilayer technology for mobile applications","authors":"Chun-Yih Wu, Chia-Lun Tang, A. Chen","doi":"10.1109/APMC.2005.1606570","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606570","url":null,"abstract":"A compact surface-mount ultra-wideband (UWB) chip antenna fabricated using multilayer low-temperature co-fired ceramic (LTCC) technology is presented. The antenna, suitable for mobile applications, is of a two layered metal-plate structure and occupies a compact size of 14 /spl times/ 10 /spl times/ 1.5 mm/sup 3/ only. With a very wide operating bandwidth of about 4.98 GHz, the antenna can cover the lower band of DS-UWB (3.1-4.85 GHz). The antenna radiation patterns at 4.0 GHz and the antenna gain are also measured and discussed.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"293 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":"122300174","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: 14
The Bragg gap on one-dimensional composite right/left-handed transmission line 一维复合左右传输线上的Bragg隙
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606744
Haiyang Li, Yewen Zhang, YuanWei Tong, Li He, Hong-qiang Li, Hong Chen
{"title":"The Bragg gap on one-dimensional composite right/left-handed transmission line","authors":"Haiyang Li, Yewen Zhang, YuanWei Tong, Li He, Hong-qiang Li, Hong Chen","doi":"10.1109/APMC.2005.1606744","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606744","url":null,"abstract":"A composite right/left-handed (CRLH) transmission line (TL) is studied. The relationship between metamaterials and photonic crystal on one-dimensional composite right/left-handed transmission line can be invented by varying the length of right-handed section. In this paper, the nonperiodic structure is applied on the CRLH transmission line with the random length of the unit cell, but the total length of the TL is fixed. It is showed that Bragg's gap with photonic crystal characteristics arises from the periodic structure of CRLH transmission line.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"39 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":"122846129","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
Compact UWB tapered-CPW-fed planar monopole antenna 紧凑型超宽带锥形cpw馈电平面单极天线
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606774
Xianling Liang, S. Zhong, F. Yao
{"title":"Compact UWB tapered-CPW-fed planar monopole antenna","authors":"Xianling Liang, S. Zhong, F. Yao","doi":"10.1109/APMC.2005.1606774","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606774","url":null,"abstract":"A planar tapered-CPW-fed monopole antenna, consisting of a circular patch and a trapeziform ground plane, is introduced. Both circular patch and ground plane are printed on the same side of a thin substrate, therefore the antenna can be easily fabricated with low cost, and achieve an extremely wide impedance bandwidth because of the tapered CPW feeder and trapeziform ground plane. The experimental results demonstrate that the antenna obtains a VSWR/spl les/2 bandwidth of 9.2:1, covering frequency range from 0.97 GHz to 8.98 GHz, which is suitable for applications in UWB communications and radars.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"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":"122980866","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
Double half-ring resonators for bandpass filter applications with suppression of multiple harmonics and size reduction 双半环谐振器，用于抑制多重谐波和减小尺寸的带通滤波器
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1606303
C. Cho, J. Lee, Jaeheung Kim
{"title":"Double half-ring resonators for bandpass filter applications with suppression of multiple harmonics and size reduction","authors":"C. Cho, J. Lee, Jaeheung Kim","doi":"10.1109/APMC.2005.1606303","DOIUrl":"https://doi.org/10.1109/APMC.2005.1606303","url":null,"abstract":"Ring resonators have been widely used for various applications. In this paper, double half ring resonators working at 2.5GHz are proposed for bandpass filter applications. These resonators suppress multiple harmonics (2/sup nd/ and 3/sup rd/ harmonics) and provide size compactness with employing various physical configurations. Conventional circular ring resonators are modified to be transformed to new forms holding double half ring configurations. A closed loop split ring resonator and open loop double half ring resonators are compared to decrease the resonant frequency. Continuously, the open double half ring resonator adds open microstrip lines to additionally reduce the resonant frequency. Open loop structure provides flexible design and lower resonant frequency, in other words, reduction of real estate. 4 different simulated resonators are fabricated and measured. They show very high quality factor and suppression of multiple harmonics.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"162 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":"123007091","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
Simulation of RF power amplifier with memory into a system-level communication link 带存储器的射频功率放大器成系统级通信链路的仿真
2005 Asia-Pacific Microwave Conference Proceedings Pub Date : 2005-12-04 DOI: 10.1109/APMC.2005.1607082
D. Bustos
{"title":"Simulation of RF power amplifier with memory into a system-level communication link","authors":"D. Bustos","doi":"10.1109/APMC.2005.1607082","DOIUrl":"https://doi.org/10.1109/APMC.2005.1607082","url":null,"abstract":"Communication systems performance estimation is of paramount importance for the efficient design of communication link for wireless applications. Although an increasing number of system level CAD tools are available, they often do not include the effects of active device nonlinearities. This is due to the lack of accurate albeit simple active device models suited for system level simulations; however, power amplifiers are the key blocks that must be accounted for to describe nonlinear effects. This work presents a fast, efficient and accurate behavioral modeling accounting for memory effects, suitable for RF power amplifier (RFPA) inserted into a complete communication link.","PeriodicalId":253574,"journal":{"name":"2005 Asia-Pacific Microwave Conference Proceedings","volume":"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":"114141036","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
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