IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229)最新文献_第7页

Antenna-radome interaction of 2GHz band 120/spl deg/ beam antenna 2GHz频段120/声压度/波束天线与天线罩的相互作用

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) Pub Date : 2001-07-08 DOI: 10.1109/APS.2001.960032

Huiling Jiang, H. Arai, Y. Ebine

引用次数: 3

Effects of antenna radiation pattern on the performance of the mobile handset 天线辐射方向图对手机性能的影响

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) Pub Date : 2001-07-08 DOI: 10.1109/APS.2001.960106

K. Sulonen, P. Vainkainen

引用次数: 4

Millimetre-wave limited-scan array using small lenses 使用小透镜的毫米波有限扫描阵列

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) Pub Date : 2001-07-08 DOI: 10.1109/APS.2001.959850

J. Poirier, G. Morin, Y. Antar, J. Moffat

引用次数: 4

A new technique for scattering by the electrical large body with an open cavity - generalized CFIE 开腔电大体散射的新技术——广义CFIE

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) Pub Date : 2001-07-08 DOI: 10.1109/APS.2001.959567

W. Gang, Nie Zai Ping, Wang Jun

引用次数: 1

Genetic algorithm optimization and realization of broadband loaded wire monopoles 宽带负载单极子的遗传算法优化与实现

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) Pub Date : 2001-07-08 DOI: 10.1109/APS.2001.959556

S. Rogers, C. Butler, A. Martin

引用次数: 7

SDA-a new family of small antennas used since long time sda是一种使用已久的新型小型天线

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) Pub Date : 2001-07-08 DOI: 10.1109/APS.2001.960135

O. Edvardsson

{"title":"SDA-a new family of small antennas used since long time","authors":"O. Edvardsson","doi":"10.1109/APS.2001.960135","DOIUrl":"https://doi.org/10.1109/APS.2001.960135","url":null,"abstract":"Many antennas are used while mounted on a small structure. Mobile phones are taken as the most widespread example. With few exceptions it is the support structure which is radiating rather than the antenna element. To get an unified approach the concept of the support structure defined antenna (SDA) is defined and quantities for describing the function of the SDA are discussed. The most important parameter is a new coupling factor telling how the antenna functions of the support structure will interact to give the total antenna function. Using this tool it is more easy to compare the function of different alternatives for antenna element mounted on the same support structure. The method gives additional information to the EM-simulations which for mobile phones are the common method of analysis. Other examples beside the mobile phones are HF antennas on aircrafts, AM-antennas on cars and most types of hand portable radio sets. It follows from the definition that the antenna element is small compared to the wavelength and thus the radiation is more or less omnidirectional or rather dipole-like. Antenna radiation tests of SDAs is a related item where the connection cable modifies the support structure during the measurement.","PeriodicalId":159827,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229)","volume":"530 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128863050","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

MRTD application for scattering analysis MRTD散射分析的应用

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) Pub Date : 2001-07-08 DOI: 10.1109/APS.2001.959514

Q. Cao, P. Wai, C. Yinchao

引用次数: 0

A compact low-cross-polarization horn antenna with serpentine-shaped taper 一种紧凑的蛇形锥形低交叉极化喇叭天线

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) Pub Date : 2001-07-08 DOI: 10.1109/APS.2001.959728

H. Deguchi, M. Tsuji, H. Shigesawa

引用次数: 17

The dual surface combined field integral equation for scattering from three-dimensional objects 三维物体散射的对偶面组合场积分方程

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) Pub Date : 2001-07-08 DOI: 10.1109/APS.2001.959662

V. Prakash, R. Mittra

{"title":"The dual surface combined field integral equation for scattering from three-dimensional objects","authors":"V. Prakash, R. Mittra","doi":"10.1109/APS.2001.959662","DOIUrl":"https://doi.org/10.1109/APS.2001.959662","url":null,"abstract":"Numerical solutions of electromagnetic scattering problems often use method of moments (MoM) based on a variety of integral equations. The traditional electric and magnetic field integral equations (EFIE/MFIE) fail at the resonant frequencies associated with the interior cavity modes of the closed three-dimensional (3D) bodies and several techniques have been proposed to deal with these resonances. Among these techniques, a large class of methods use dual-surfaces to create a well-conditioned problem. These methods operate with MFIE - both on the surface of the body and also on the virtual surface located inside it, and are sensitive to the location of the virtual surface. We propose an alternative form of dual-surface integral equation for computing electromagnetic scattering from perfectly conducting arbitrary three-dimensional (3-D) bodies that enforces conventional MFIE on the surface of the body and EFIE on the virtual surface. The enforcement of DS-CFIE leads to an overdetermined problem of 3N equations with 2N unknowns when solved using MoM. This over determined system is solved for a least squares solution using normal form of the conjugate gradient (CG) method. Numerical results have been presented for the case of plane wave scattering from a conducting sphere and cube to validate the present approach.","PeriodicalId":159827,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134486803","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 quarter-wave U-shaped patch antenna with two unequal arms for wideband and dual-frequency operation 一种四分之一波u形贴片天线，有两个不相等的臂，用于宽带和双频工作

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) Pub Date : 2001-07-08 DOI: 10.1109/APS.2001.959398

Yong-xin Guo, K. Luk, Kai-fong Lee, R. Chair

{"title":"A quarter-wave U-shaped patch antenna with two unequal arms for wideband and dual-frequency operation","authors":"Yong-xin Guo, K. Luk, Kai-fong Lee, R. Chair","doi":"10.1109/APS.2001.959398","DOIUrl":"https://doi.org/10.1109/APS.2001.959398","url":null,"abstract":"Patch antennas are receiving increasing interest in various mobile communication systems since they can provide advantages over traditional whip and helix antennas in terms of high efficiency, low EM coupling to the human head and increased mechanical reliability (see Pattnail, S.S. et al., 1998). The main disadvantages are their narrow impedance bandwidth and large size for mobile applications. Several techniques have been proposed to overcome the size problem of conventional patch antennas. Many efforts have recently been taken to improve the bandwidth of the shorted patch antennas. For our previous design (see Guo, Y.X., et al., Electron. Lett., vol.35, no.24, p.2069-70, 1999), the substrate thickness must be within a range to obtain a wide impedance bandwidth. Broadband and dual-frequency shorted U-shaped patch antennas are presented. Different-length arms of the U-shaped patch are used to produce two staggered resonant modes. For a given substrate thickness, a wide impedance bandwidth can easily be obtained. The proposed antenna is simpler in structure than regular stacked patch antennas (see Zaid, L. et al., IEEE Trans., vol.AP-47, no.4, p.654-60, 1999), and has more freedom on the choice of bandwidth and size than our previous design.","PeriodicalId":159827,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133747764","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: 107