{"title":"用于降低76 GHz汽车雷达道路杂波噪声的内置偏振片复合贴片阵列天线","authors":"H. Shinoda, H. Kondoh","doi":"10.1109/MWSYM.2007.380473","DOIUrl":null,"url":null,"abstract":"A composite patch array antenna with built-in polarizer has been newly proposed and developed to reduce road clutter noise of 76 GHz automotive radars by 20 dB, where a polarizer is placed in front of Tx and Rx patch arrays within their reactive near-field region to suppress cross-polarized sidelobe radiation from feeding lines of the patch arrays while maintaining a low-profile characteristic with 4 mm thickness. Additional metal-lined absorbers within the composite antenna structure, while terminating cross-polarized waves undesirably excited by the patch arrays, also serve as miniature clutter plates to further reduce sidelobes toward road surface. The resultant composite antenna has achieved sidelobe levels of -45 dB, with a 20 dB improvement from standard patch arrays, at elevation angles toward 90deg.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"11 1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Composite Patch Array Antenna with built-in Polarizer for Reducing Road Clutter Noises of 76 GHz Automotive Radars\",\"authors\":\"H. Shinoda, H. Kondoh\",\"doi\":\"10.1109/MWSYM.2007.380473\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A composite patch array antenna with built-in polarizer has been newly proposed and developed to reduce road clutter noise of 76 GHz automotive radars by 20 dB, where a polarizer is placed in front of Tx and Rx patch arrays within their reactive near-field region to suppress cross-polarized sidelobe radiation from feeding lines of the patch arrays while maintaining a low-profile characteristic with 4 mm thickness. Additional metal-lined absorbers within the composite antenna structure, while terminating cross-polarized waves undesirably excited by the patch arrays, also serve as miniature clutter plates to further reduce sidelobes toward road surface. The resultant composite antenna has achieved sidelobe levels of -45 dB, with a 20 dB improvement from standard patch arrays, at elevation angles toward 90deg.\",\"PeriodicalId\":213749,\"journal\":{\"name\":\"2007 IEEE/MTT-S International Microwave Symposium\",\"volume\":\"11 1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2007-06-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2007 IEEE/MTT-S International Microwave Symposium\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/MWSYM.2007.380473\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 IEEE/MTT-S International Microwave Symposium","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MWSYM.2007.380473","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Composite Patch Array Antenna with built-in Polarizer for Reducing Road Clutter Noises of 76 GHz Automotive Radars
A composite patch array antenna with built-in polarizer has been newly proposed and developed to reduce road clutter noise of 76 GHz automotive radars by 20 dB, where a polarizer is placed in front of Tx and Rx patch arrays within their reactive near-field region to suppress cross-polarized sidelobe radiation from feeding lines of the patch arrays while maintaining a low-profile characteristic with 4 mm thickness. Additional metal-lined absorbers within the composite antenna structure, while terminating cross-polarized waves undesirably excited by the patch arrays, also serve as miniature clutter plates to further reduce sidelobes toward road surface. The resultant composite antenna has achieved sidelobe levels of -45 dB, with a 20 dB improvement from standard patch arrays, at elevation angles toward 90deg.
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