1986 Antennas and Propagation Society International Symposium最新文献_第6页

Airborne phased array antenna for mobile satellite communications 移动卫星通信用机载相控阵天线

1986 Antennas and Propagation Society International Symposium Pub Date : 1986-06-08 DOI: 10.1109/APS.1986.1149690

T. Teshirogi, M. Tanaka, S. Ohmori

引用次数: 6

Efficient computer programs for study and optimization of blockage and diffraction in symmetrical reflector antennas 研究和优化对称反射面天线中阻挡和衍射的高效计算机程序

1986 Antennas and Propagation Society International Symposium Pub Date : 1986-06-08 DOI: 10.1109/APS.1986.1149755

P. Kildal, E. Lier, E. Olsen

引用次数: 6

A broadband electrically small adaptive array 一种宽频电小型自适应阵列

1986 Antennas and Propagation Society International Symposium Pub Date : 1986-06-08 DOI: 10.1109/APS.1986.1149597

J. Bull, L. Burgess, R. Flam, R. Peloso

引用次数: 0

Omni-directional periodic rod antenna 全向周期杆天线

1986 Antennas and Propagation Society International Symposium Pub Date : 1986-06-08 DOI: 10.1109/APS.1986.1149631

S. Peng, S. Xu, F. Schwering

引用次数: 20

Surface current and receiving characteristics of reflector antennas 反射天线的表面电流和接收特性

1986 Antennas and Propagation Society International Symposium Pub Date : 1986-06-08 DOI: 10.1109/APS.1986.1149654

H. Shigesawa, M. Nishimura

引用次数: 1

Synthesis and analysis of single shaped reflector antennas 单形反射面天线的合成与分析

1986 Antennas and Propagation Society International Symposium Pub Date : 1986-06-08 DOI: 10.1109/APS.1986.1149620

H. Viskum

{"title":"Synthesis and analysis of single shaped reflector antennas","authors":"H. Viskum","doi":"10.1109/APS.1986.1149620","DOIUrl":"https://doi.org/10.1109/APS.1986.1149620","url":null,"abstract":"Introduction. Althou h eometrical optics (GO) is an asymptotic theory describyears constituted the foundation for synthesis of reflector antennas. While dual ing electromagnetic #e& of infinitely high frequencies only, it has for several reflectors are usually shaped to produce a certain aperture distribution leading to a pencil beam type pattern with high gain or low side lobes, etc., single reflectors field. In either of the cases, any design must necessarily be ver!fied by a diffracmay be syntheslsed to generate shaped beams by using the GO directly in the far tion analysis, because of the GO assumption made In the synthesis. In this paper we will demonstrate a numerical method for solving the synthesis problem for single reflector antennas. The technique has been found to be superior to what has reviously been applied, in particular because it returns the solution on a form wlich lends itself easily t o diffraction analysis. This is accomplished by solvin Westcott's synthesis problem usin a collocation method and an expansion of t l e reflector surface in bicubicspline?unctions. The theory will be resumed very briefly, and we wiU then present some results figuration, a reflector shaped to provide full earth coverage from a low orbitting from applying the developed synthesis and analysis programs to a particular consatellite. Formulation of the synthesis. As stated previously, the synthesis part of this study is based upon the work of Westcott (1983). To formulate the problem we of the coordinate system. The half angle subtended by the reflector at the feed is consider the reflector shown in fig. 1, illuminated by a feed located at the centre €Ic. Given the feed power densit pattern I(e,+), we require the reflector t o G(B. a) inside the far-field cone of half angle Of. Westcott showed that by using transform this pattern into a far-fie& pattern with a power density distribution an appropriate parametrization of the reflectoer surface one can derive a highly non-linear boundary value problem, the solution of which overns the reflector surface. He also showed how the non-linear problem couqd be linearized and solved by repeated solution of linear second order partial differential equations (POE'S).","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116844047","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

The effect of modal element position errors on the radiation pattern of large space-deplyable arrays 模态元件位置误差对大型空间可展开阵列辐射方向图的影响

1986 Antennas and Propagation Society International Symposium Pub Date : 1986-06-08 DOI: 10.1109/APS.1986.1149791

G. Shaw

引用次数: 1

Spatial prefiltering of interference sources using subarrays of reactively steered adaptive arrays 使用反应导向自适应阵列子阵列的干扰源空间预滤波

1986 Antennas and Propagation Society International Symposium Pub Date : 1986-06-08 DOI: 10.1109/APS.1986.1149678

R. Dinger

引用次数: 0

A numerical method in power synthesis of aperture antennas 孔径天线功率综合的数值方法

1986 Antennas and Propagation Society International Symposium Pub Date : 1986-06-08 DOI: 10.1109/APS.1986.1149618

G. D'Elia, G. Leone, R. Pierri

{"title":"A numerical method in power synthesis of aperture antennas","authors":"G. D'Elia, G. Leone, R. Pierri","doi":"10.1109/APS.1986.1149618","DOIUrl":"https://doi.org/10.1109/APS.1986.1149618","url":null,"abstract":"The synthesis of an aperture field radiating a prescribed radiation pattern has ben widely considered in the literature from both a theoretical and a numerical point of view. As known, a complete statement of the problem is strictly related to the choice of the functional of the radiated field to be minimized by the synthesis procedure . This functional allows the restriction of the set of all the possible solutions (which in general, at the expense of the superdirectivity gain, could reproduce as closely as desired.any prescribed pattern) to an appropriate subset. In this way, accounting for the physical realizability of the pattern,the synthesis problem, which is intrinsically an ill-posed problem, becomes a.stable one. When the functional to be minimized involves both amplitude and phase of the radiated field, the so called \"field synthesis\" problem is obtained. When only the amplitude of he radiated field is prescribed, the \"power synthesis\" problem is referred to. It is to be noted that, as shown by Voytovich €11, the freedom on the phase of the reconstructed pattern. in the power synthesis problem, leads to an improvement of the precision of the reconstruction of the prescribed amplitude. In the following the power synthesis problem is then considered.","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133347243","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

A block-iteration approach to the problem of radar scattering from PEC and edge-loaded strips 基于块迭代法的雷达散射问题

1986 Antennas and Propagation Society International Symposium Pub Date : 1986-06-08 DOI: 10.1109/APS.1986.1149735

A. Chang, R. Mittra

引用次数: 0