2007 IEEE Antennas and Propagation Society International Symposium最新文献_第7页

Low-profile printed monopole antenna for penta-band operation in the mobile phone 用于手机五波段操作的低轮廓印刷单极天线

2007 IEEE Antennas and Propagation Society International Symposium Pub Date : 2007-06-09 DOI: 10.1109/APS.2007.4396302

Chih‐Hsien Wu, Kin‐Lu Wong

引用次数: 6

Techniques for modeling multi-dielectric layers coplanar waveguide ferroelectric phase shifters 多介质层共面波导铁电移相器的建模技术

2007 IEEE Antennas and Propagation Society International Symposium Pub Date : 2007-06-09 DOI: 10.1109/APS.2007.4396489

Wayne Kim, M. Iskander

引用次数: 0

Multipath return for radar targets over a rough surface 雷达目标在粗糙表面上的多路径返回

2007 IEEE Antennas and Propagation Society International Symposium Pub Date : 2007-06-09 DOI: 10.1109/APS.2007.4396624

G. Ogden, S. Matzner, L. Zurk, D. Blejer

引用次数: 4

A candidate active antenna design for a low frequency radio telescope array 低频射电望远镜阵列候选有源天线设计

2007 IEEE Antennas and Propagation Society International Symposium Pub Date : 2007-06-09 DOI: 10.1109/APS.2007.4396541

N. Paravastu, B. Hicks, P. Ray, W. Erickson

{"title":"A candidate active antenna design for a low frequency radio telescope array","authors":"N. Paravastu, B. Hicks, P. Ray, W. Erickson","doi":"10.1109/APS.2007.4396541","DOIUrl":"https://doi.org/10.1109/APS.2007.4396541","url":null,"abstract":"The Long Wavelength Array (LWA), currently in the development stage, is a radio telescope array that will be constructed in New Mexico, USA over the next several years. It will consist of ~ 52 stations of ~ 256 cross-dipole antennas each, and will explore the Universe in the 20 - 80 MHz frequency band. The large number of antennas required for the LWA suggests that the antenna design must be kept simple in order to maintain a low station cost. The leading candidate LWA antenna is a \"big blade\" antenna consisting of crossed dipole elements made of sheet aluminum. The big blade antenna has been extensively characterized and shows potential for fulfilling the technical requirements for the LWA. However, their potentially prohibitive cost has necessitated the exploration of alternate, more affordable antenna topologies. In this paper, we present one such promising topology - the fork antenna. In the following sections, we show through simulation and field measurement that the fork antenna compares closely in performance to the big blade antenna and is therefore a viable alternative to the big blade antenna in the LWA project.","PeriodicalId":117975,"journal":{"name":"2007 IEEE Antennas and Propagation Society International Symposium","volume":"311 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116722108","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: 15

Lightweight L and S-band antenna fed by three-strip directional couplers 轻型L波段和s波段天线，由三带定向耦合器馈电

2007 IEEE Antennas and Propagation Society International Symposium Pub Date : 2007-06-09 DOI: 10.1109/APS.2007.4395508

P. Kabacik, G. Jaworski, M. Hornik, T. Maleszka

引用次数: 3

Synthesis of a novel artificial lens for a large flare horn antenna at X-ban 一种新型x波段大喇叭天线人工透镜的合成

2007 IEEE Antennas and Propagation Society International Symposium Pub Date : 2007-06-09 DOI: 10.1109/APS.2007.4396399

A. Ostergaard

引用次数: 1

Low frequency microstrip analysis using the spectral domain approach and the variational method 用谱域法和变分法进行低频微带分析

2007 IEEE Antennas and Propagation Society International Symposium Pub Date : 2007-06-09 DOI: 10.1109/APS.2007.4396669

Jiming Song, Z. Zeng, Lu Zhang

引用次数: 1

FDTD coeffcient modification schemes of the wave and Maxwell’s equations for controlling order of accuracy and dispersion errors 波的FDTD系数修正方案和麦克斯韦方程用于控制精度和色散误差的阶数

2007 IEEE Antennas and Propagation Society International Symposium Pub Date : 2007-06-09 DOI: 10.1109/APS.2007.4396644

B. Finkelstein, R. Kastner

{"title":"FDTD coeffcient modification schemes of the wave and Maxwell’s equations for controlling order of accuracy and dispersion errors","authors":"B. Finkelstein, R. Kastner","doi":"10.1109/APS.2007.4396644","DOIUrl":"https://doi.org/10.1109/APS.2007.4396644","url":null,"abstract":"Recently, a general methodology for generating FDTD dispersion relation preserving (DRP) schemes of the wave equation (WE) was introduced. These schemes can be designed to accommodate arbitrary requirements for phase and group velocity dispersion characteristics over the operating frequency range. In this work, the methodology is further generalized to include specification of both dispersion behavior and the orders of accuracy (OoAs) by minimizing the local truncation error [4, Ch. 5.1] for both the WE and Maxwell's equations (MEs). While the increase in OoA leads, in general, to a lower overall dispersion error, additional improvements of dispersion characteristics at certain frequencies can be accomplished at the expense of reduced OoA. This tradeoff affords flexibility in designing an FDTD algorithm for a wide range of applications. The OoA for a given stencil size is analyzed in this work by a Taylor expansion of the dispersion relationship in powers of the normalized frequency. This equation serves as a starting point for the methodology for the analysis and control of the OoA and dispersion errors, that encompasses both the customary analysis with Taylor expansion of the field in terms of At and Ax and the derivative-swapping approach.","PeriodicalId":117975,"journal":{"name":"2007 IEEE Antennas and Propagation Society International Symposium","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117044662","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

Broadband electronically-steerable array for mission security (BEAMS) 用于任务安全的宽带电子制导阵列(beam)

2007 IEEE Antennas and Propagation Society International Symposium Pub Date : 2007-06-09 DOI: 10.1109/APS.2007.4395417

R. Olsen, C. Meagher, R. Ferro, S. Lapic

引用次数: 0

Time-varying matching network for antennas in pulse-based systems 脉冲系统中天线的时变匹配网络

2007 IEEE Antennas and Propagation Society International Symposium Pub Date : 2007-06-09 DOI: 10.1109/APS.2007.4395437

Xin Wang, L. Katehi, D. Peroulis

引用次数: 11