{"title":"卡塞格伦天线频率复用的波束波导馈源","authors":"B. Claydon","doi":"10.1109/EUMA.1976.332265","DOIUrl":null,"url":null,"abstract":"The use of a beam waveguide feed for a Cassegrain earth station antenna has several mechanical advantages over a conventional feed. To ascertain the suitability of this type of feed for orthogonal polarization frequency re-use applications, a near-field diffraction analysis has been made of a configuration comprising offset sections of paraboloids. Emphasis has been placed on depolarization by the beam waveguide reflectors, the effect of inherent cross-polarization due to an imperfect feedhorn, and the effects of misalignments within the reflector system.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"48 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Beam Waveguide Feed for Frequency Re-Use in Cassegrain Antennas\",\"authors\":\"B. Claydon\",\"doi\":\"10.1109/EUMA.1976.332265\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The use of a beam waveguide feed for a Cassegrain earth station antenna has several mechanical advantages over a conventional feed. To ascertain the suitability of this type of feed for orthogonal polarization frequency re-use applications, a near-field diffraction analysis has been made of a configuration comprising offset sections of paraboloids. Emphasis has been placed on depolarization by the beam waveguide reflectors, the effect of inherent cross-polarization due to an imperfect feedhorn, and the effects of misalignments within the reflector system.\",\"PeriodicalId\":377507,\"journal\":{\"name\":\"1976 6th European Microwave Conference\",\"volume\":\"48 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1976-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1976 6th European Microwave Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/EUMA.1976.332265\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1976 6th European Microwave Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EUMA.1976.332265","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Beam Waveguide Feed for Frequency Re-Use in Cassegrain Antennas
The use of a beam waveguide feed for a Cassegrain earth station antenna has several mechanical advantages over a conventional feed. To ascertain the suitability of this type of feed for orthogonal polarization frequency re-use applications, a near-field diffraction analysis has been made of a configuration comprising offset sections of paraboloids. Emphasis has been placed on depolarization by the beam waveguide reflectors, the effect of inherent cross-polarization due to an imperfect feedhorn, and the effects of misalignments within the reflector system.
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