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2003 IEEE Topical Conference on Wireless Communication Technology最新文献

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Three-dimensional simulation of surface plasmon polariton nanometric optical circuits by volume integral equation 基于体积积分方程的表面等离子激元纳米光学电路三维模拟
2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321423
K. Tanaka, M. Tanaka
{"title":"Three-dimensional simulation of surface plasmon polariton nanometric optical circuits by volume integral equation","authors":"K. Tanaka, M. Tanaka","doi":"10.1109/WCT.2003.1321423","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321423","url":null,"abstract":"Downsizing of optical circuits is one of the most important subjects in communication technology for the future. Recently, the subject of making optical circuits of nanometric scale has attracted much attention. The size and density of optical devices employing conventional optical waveguide and photonic crystals is limited by the diffraction limit of light. However, the size of optical waveguides using surface plasmon polaritons (SPPs) can be significantly decreased as compared to the conventional diffraction-limited optical waveguide. The optical circuit using SPPs is a promising candidate for nanoscale optical circuits. We propose a nanoscale optical waveguide and show, by three-dimensional numerical simulations, that this waveguide can be employed in nanometric optical circuits.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"3 1","pages":"16-17"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82508211","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
Fractal PIFA, dipole and monopole antennas 分形PIFA，偶极和单极天线
2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321522
T. W. Hee, P. Hall, C.T.P. Song
{"title":"Fractal PIFA, dipole and monopole antennas","authors":"T. W. Hee, P. Hall, C.T.P. Song","doi":"10.1109/WCT.2003.1321522","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321522","url":null,"abstract":"Fractal antennas have been shown to be capable of both multiple and wideband operations. The University of Birmingham has investigated several novel fractal-based antenna elements. In this paper, an overview of our recent developments is presented, which includes the multiband halved and shorted Sierpinski gasket PIFA, the wideband stacked Sierpinski carpet dipole antenna and two new fractal-based monopoles.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"43 1","pages":"275-276"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88333335","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: 10
FPGA implementation of the FDTD data flow machine FPGA实现的FDTD数据流机
2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321585
S. Matsuoka, H. Kawaguchi
{"title":"FPGA implementation of the FDTD data flow machine","authors":"S. Matsuoka, H. Kawaguchi","doi":"10.1109/WCT.2003.1321585","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321585","url":null,"abstract":"Aiming at ultra high performance computing in electromagnetic field simulation, the authors have been working on the development of an FDTD dedicated computer (Kawaguchi, H. et al., IEEE Trans. Magn., vol.38, no.2, p.689-62, 2002). The FDTD method is a very simple algorithm, which can be utilized by a relatively small digital circuit. The authors have already presented a basic design and logic simulation of. the dedicated computer architecture. This paper presents an implementation of the FDTD dedicated computer by means of the FPGA whose design and logic simulation have already been done using VHDL design software.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"8 1","pages":"418-419"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86436744","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
Novel iteration procedures of a hybrid method combining MoM and scattered-field FDTD method for electromagnetic dosimetry 电磁剂量法中最小模量法与散射场时域有限差分法相结合的新迭代方法
2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321489
S. Mochizuki, S. Watanabe, M. Taki, Y. Yamanaka, H. Shirai
{"title":"Novel iteration procedures of a hybrid method combining MoM and scattered-field FDTD method for electromagnetic dosimetry","authors":"S. Mochizuki, S. Watanabe, M. Taki, Y. Yamanaka, H. Shirai","doi":"10.1109/WCT.2003.1321489","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321489","url":null,"abstract":"Health effects of human-body exposure to the near field of a mobile communication device have been investigated with knowledge of the electromagnetic power absorption in human heads during cellular-telephone use. One of the most powerful numerical calculation methods for biological electromagnetic compatibility (Bio-EMC) problems is the finite-difference time-domain (FDTD) method. However accurate models of curved structures, which are closely related to the antenna characteristics, are difficult to realize in the FDTD method. Because recent devices have more complex antennas, it is not easy to precisely evaluate dose characteristics in the human body exposed to the near field from such devices by only using the FDTD method. The objective of this study is to establish a numerical hybrid method combining the advantage of different numerical calculation methods such as the MoM/FDTD method proposed in the literature in order to accurately analyze the complex Bio-EMC problem. In this paper, novel iteration procedures are introduced into the previously reported hybrid MoM/FDTD method. We also show the validity of application of this method to Bio-EMC problems.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"116 1","pages":"200-201"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89209026","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
An investigation of grounding techniques in microwave amplifiers 微波放大器接地技术的研究
2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321473
Chang Soo Suh, J. Bell, K. Ching, T. A. Heffner, W. Hui, G. S. Shiroma, Chenyan Song, R. Sorensen, W. Shiroma
{"title":"An investigation of grounding techniques in microwave amplifiers","authors":"Chang Soo Suh, J. Bell, K. Ching, T. A. Heffner, W. Hui, G. S. Shiroma, Chenyan Song, R. Sorensen, W. Shiroma","doi":"10.1109/WCT.2003.1321473","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321473","url":null,"abstract":"The current revolution in wireless communications has created a critical need for engineering graduates in this field, and has sparked renewed interest in RF/microwave circuits and systems courses. The University of Hawaii has developed a discovery-based, graduate-level laboratory course in active microwave electronics that has several distinguishing features compared to conventional graduate-level microwave courses: (1) instead of a traditional lecture format, the course is taught in studio mode, in which all student activities take place in a research laboratory that has separate stations for computer-aided design, fabrication, and measurement; (2) the instructor provides minimal guidance to the students, and instead relies on group discussions to elicit critical design methodologies; (3) the design projects are not typical canned experiments, but rather open-ended projects that emphasize self discovery. We present one of the projects from this course. Each student was given the mission of designing, fabricating, measuring, and modeling a 10-GHz maximum-gain amplifier. While seemingly a straightforward objective, the students found many obstacles along the way that provided invaluable opportunities for self discovery.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"20 1","pages":"170-171"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83036619","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
Evaluation of route diversity performances in millimeter-wave BFWA mesh networks by correlated multivariate gamma distributions 基于相关多元伽玛分布的毫米波BFWA网状网络路由分集性能评价
2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321507
S. Nomoto, S. Konishi, S. Nanba, Y. Kishi
{"title":"Evaluation of route diversity performances in millimeter-wave BFWA mesh networks by correlated multivariate gamma distributions","authors":"S. Nomoto, S. Konishi, S. Nanba, Y. Kishi","doi":"10.1109/WCT.2003.1321507","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321507","url":null,"abstract":"Broadband fixed wireless access (BFWA) systems have been considered as a promising approach for high-speed access networks. BFWA networks operating at millimeter-wave bands are appropriate for high-density deployment of a high capacity wireless access infrastructure, while there is inherent degradation of radio links due to rain attenuation, especially in tropical or subtropical regions. The authors have proposed a new system architecture of mesh wireless networks (Kishi, Y. et al., Proc. IEEE WCON2001, p.17-20, 2001) whose advantages include route diversity. This paper evaluates the diversity effect under the assumption that the rain attenuation of radio links can be approximated by gamma distributions. By using correlated multivariate gamma distributions, the diversity effect is quantitatively confirmed.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"29 1","pages":"244-245"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83527162","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
Design considerations for monolithic Si-based RF VCOs in wireless single-chip systems 无线单芯片系统中单片硅基射频压控振荡器的设计考虑
2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321474
S. Raman, D. Sanderson, A. S. Klein
{"title":"Design considerations for monolithic Si-based RF VCOs in wireless single-chip systems","authors":"S. Raman, D. Sanderson, A. S. Klein","doi":"10.1109/WCT.2003.1321474","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321474","url":null,"abstract":"The paper discusses a number of important considerations in the design of differential VCO known as -G/sub M/ LC-tank VCO in Si technologies. The availability of multiple interconnect layers, culminating in a thick electroplated Cu (bump) layer, has led to significant improvements in the Q-factor of tank circuit inductors. In addition, the use of symmetric differential inductor structures can result in substantial improvements in Q through the enhancement of mutual coupling.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"16 1","pages":"172-174"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89332221","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
Diaphragm effects in rectangular waveguide filled with different frequency dependent dielectric materials 不同频率介电材料填充矩形波导中的膜片效应
2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321564
R. Ramiz
{"title":"Diaphragm effects in rectangular waveguide filled with different frequency dependent dielectric materials","authors":"R. Ramiz","doi":"10.1109/WCT.2003.1321564","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321564","url":null,"abstract":"There are several studies in the literature, mainly focused on obtaining microwave transformers, filters, matching circuits, etc., using different types of air-filled waveguide structures. We consider a waveguide junction formed by putting horizontal and vertical diaphragms within a rectangular waveguide. The regions on either side of the diaphragm are filled by different frequency depended dielectric materials. TE mode propagation is considered within the rectangular waveguide and electric and magnetic fields are obtained accordingly. The attenuation constants and propagation constants of a field propagating within the rectangular waveguide are defined. The effects of the discontinuities formed by vertical and horizontal diaphragms in a dispersive material filled rectangular waveguide are studied.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"74 1","pages":"372-373"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90974550","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
Reconfigurable portable antenna systems for high-speed wireless communication 用于高速无线通信的可重构便携式天线系统
2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321439
J. Bernhard, G. Huff, J. Feng, S. Zhang, G. Cung
{"title":"Reconfigurable portable antenna systems for high-speed wireless communication","authors":"J. Bernhard, G. Huff, J. Feng, S. Zhang, G. Cung","doi":"10.1109/WCT.2003.1321439","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321439","url":null,"abstract":"Summary form only given. Our research develops intelligent portable antenna systems to improve the reliability, throughput, and noise immunity of high-speed wireless communication networks. Antenna system 'intelligence' implies an ability to respond to changing electromagnetic environments and operating conditions. This project provides antenna system intelligence for portable units by implementing new compact radiation-tunable antennas. A number of control algorithms, linked to the media access control layer (MAC), including one that implements fuzzy logic, are being investigated. We anticipate that these studies will verify the effectiveness of these new antennas in new kinds of ad hoc network scenarios, providing measurable performance gains over existing antennas. This novel approach views antennas as dynamic parts of the communication system, creating a new paradigm for antenna design and control.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"46 1","pages":"82-83"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90092003","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
A 802.11a WLAN oscillator with high Q embedded passives on laminate-type organic package 一种采用层压式有机封装的高Q嵌入式无源802.11a WLAN振荡器
2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321471
A. Bavisi, S. Dalmia, Madhavan Swaminathan, F. Ayazi
{"title":"A 802.11a WLAN oscillator with high Q embedded passives on laminate-type organic package","authors":"A. Bavisi, S. Dalmia, Madhavan Swaminathan, F. Ayazi","doi":"10.1109/WCT.2003.1321471","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321471","url":null,"abstract":"Phase noise, output RF amplitude, and jitter are the oscillator performance characteristics which are determined by the DC power consumed and the quality factor (Q) of the passives. In a multi-standard environment, low phase noise enables achieving high SNR for all standards in the presence of noise and interference. CMOS and similar IC technologies limit the DC voltage supply and provide very low Q inductors and capacitors (/spl sim/6 to 30), trading the oscillator's performance with the DC power consumed. The paper presents a low power, low phase noise Colpitt's oscillator at 5.2 GHz for WLAN (IEEE 802.11a) application. The adjacent channel interference suppression requirement of the 802.11a WLAN system (5.15-5.35 GHz, 5.725-5.825 GHz) is approximately 25 dB with an SNR of 19 dB for a BER of 10/sup -6/ in a 64 QAM system. This leads to a phase noise requirement of at least -110 dBc/Hz at 1 MHz offset (Bhattacharjee, J. et al., 2002 IEEE MTT-S Int. Microwave Symp. Dig., vol.1, p.585-8, 2002).","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"44 1","pages":"166-167"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76653305","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
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