{"title":"天线系统","authors":"올리버 폴 레이스텐","doi":"10.1002/9781119564621.ch3","DOIUrl":null,"url":null,"abstract":"An antenna system for operation at frequencies in excess of 200MHz, comprises an antenna, a transmission line and a receiver stage, the transmission line electrically connecting the antenna to an input of the receiver stage, and the antenna having: an antenna core of a solid insulative material having a relative dielectric constant greater than 5, the material of the core occupying the major part of the volume defined by the core outer surface, and a three-dimensional antenna element structure disposed on or adjacent the outer surface of the core; wherein the antenna is fed by the transmission line at a proximal end of the dielectric core; the receiver stage comprises an amplifier and an electromagnetic radiation screen, the amplifier being positioned within the screen; and the transmission line includes a current choke arranged to provide a substantially balanced condition at a feed connection of the antenna.","PeriodicalId":309755,"journal":{"name":"Design Technology of Synthetic Aperture Radar","volume":"554 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Antenna System\",\"authors\":\"올리버 폴 레이스텐\",\"doi\":\"10.1002/9781119564621.ch3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An antenna system for operation at frequencies in excess of 200MHz, comprises an antenna, a transmission line and a receiver stage, the transmission line electrically connecting the antenna to an input of the receiver stage, and the antenna having: an antenna core of a solid insulative material having a relative dielectric constant greater than 5, the material of the core occupying the major part of the volume defined by the core outer surface, and a three-dimensional antenna element structure disposed on or adjacent the outer surface of the core; wherein the antenna is fed by the transmission line at a proximal end of the dielectric core; the receiver stage comprises an amplifier and an electromagnetic radiation screen, the amplifier being positioned within the screen; and the transmission line includes a current choke arranged to provide a substantially balanced condition at a feed connection of the antenna.\",\"PeriodicalId\":309755,\"journal\":{\"name\":\"Design Technology of Synthetic Aperture Radar\",\"volume\":\"554 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2007-05-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Design Technology of Synthetic Aperture Radar\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1002/9781119564621.ch3\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Design Technology of Synthetic Aperture Radar","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/9781119564621.ch3","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
An antenna system for operation at frequencies in excess of 200MHz, comprises an antenna, a transmission line and a receiver stage, the transmission line electrically connecting the antenna to an input of the receiver stage, and the antenna having: an antenna core of a solid insulative material having a relative dielectric constant greater than 5, the material of the core occupying the major part of the volume defined by the core outer surface, and a three-dimensional antenna element structure disposed on or adjacent the outer surface of the core; wherein the antenna is fed by the transmission line at a proximal end of the dielectric core; the receiver stage comprises an amplifier and an electromagnetic radiation screen, the amplifier being positioned within the screen; and the transmission line includes a current choke arranged to provide a substantially balanced condition at a feed connection of the antenna.
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