Multibeam offset parabolic reflector fed by interlaced feeds using an EBG resonator antenna

11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI:10.1109/ANTEM.2005.7852050

R. Chantalat, T. Monediere, M. Thevenot, B. Jecko, P. Dumon

{"title":"Multibeam offset parabolic reflector fed by interlaced feeds using an EBG resonator antenna","authors":"R. Chantalat, T. Monediere, M. Thevenot, B. Jecko, P. Dumon","doi":"10.1109/ANTEM.2005.7852050","DOIUrl":null,"url":null,"abstract":"A multibeam single parabolic reflector antenna with horns on the focal plane suffers from excessive losses either by spillover or by beam crossover. To avoid the complex, costly and heavy systems currently used to improve the multibeam antenna characteristics as multiple apertures design or enhanced feeds concept, a multifeed and multifrequency EBG antenna is appropriate to illuminate a multibeam single offset parabolic reflector. Indeed, the EBG resonator antenna can achieve directive and interlaced focal feeds in order to obtain maximum reflector antenna efficiency and closely spaced beams. This original property of interlaced radiating apertures is impossible to obtain with horns and is very convenient to improve the reflector antenna performances. A low losses EBG antenna has been realized at 8 GHz to illuminate a focusing antenna with 0.74 F/D ratio. Optimum reflector antenna efficiency of 0.8 and a beams crossover level equal to −3.5 dB have been obtained. The first results of another EBG system at 30 GHz which illuminates a reflector antenna with 2.7 F/D ratio are given.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"13 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ANTEM.2005.7852050","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

Abstract

A multibeam single parabolic reflector antenna with horns on the focal plane suffers from excessive losses either by spillover or by beam crossover. To avoid the complex, costly and heavy systems currently used to improve the multibeam antenna characteristics as multiple apertures design or enhanced feeds concept, a multifeed and multifrequency EBG antenna is appropriate to illuminate a multibeam single offset parabolic reflector. Indeed, the EBG resonator antenna can achieve directive and interlaced focal feeds in order to obtain maximum reflector antenna efficiency and closely spaced beams. This original property of interlaced radiating apertures is impossible to obtain with horns and is very convenient to improve the reflector antenna performances. A low losses EBG antenna has been realized at 8 GHz to illuminate a focusing antenna with 0.74 F/D ratio. Optimum reflector antenna efficiency of 0.8 and a beams crossover level equal to −3.5 dB have been obtained. The first results of another EBG system at 30 GHz which illuminates a reflector antenna with 2.7 F/D ratio are given.

查看原文本刊更多论文

多波束偏置抛物面反射器，采用EBG谐振器天线隔行馈电

焦平面上有角的多波束单抛物面反射器天线由于外溢或波束交叉而遭受过大的损耗。为了避免目前用于改善多波束天线特性的复杂、昂贵和笨重的系统，如多孔径设计或增强馈电概念，多馈电和多频率EBG天线适合用于照亮多波束单偏置抛物面反射器。事实上，EBG谐振腔天线可以实现定向和交错的焦点馈源，以获得最大的反射面天线效率和紧密间隔的波束。这种交错辐射孔径的原始特性是喇叭无法获得的，非常便于提高反射面天线的性能。实现了8ghz低损耗EBG天线，用于照亮F/D比为0.74的聚焦天线。最佳反射面天线效率为0.8，波束交叉电平为−3.5 dB。给出了另一种30 GHz的EBG系统在2.7 F/D比反射天线上的初步结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]

自引率

0.00%

发文量