{"title":"一种用于超高频射频识别系统的极化和功率敏捷询问器天线","authors":"L. Mayer, A. Scholtz","doi":"10.1109/ICEAA.2010.5652229","DOIUrl":null,"url":null,"abstract":"We present an active interrogator antenna for UHF RFID (radio-frequency identification) systems which is capable of transmitting electromagnetic radiation at any desired polarization and with adjustable transmit power. We use a dual-polarized patch antenna originally radiating linear polarization in +45° and −45° direction and feed each input with signals that can be adjusted in both phase and amplitude by two vector modulators. The vector modulators are controlled by a microprocessor that provides an RS-232 interface. The antenna also comprises power amplifiers to achieve a maximum transmit power of 2 W at any desired polarization mode. For testing we perform measurements that determine the radiation pattern and polarization mode of a commercially available transponder and find very good agreement with simulation results.","PeriodicalId":375707,"journal":{"name":"2010 International Conference on Electromagnetics in Advanced Applications","volume":"105 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A polarization- and power-agile interrogator antenna for UHF RFID systems\",\"authors\":\"L. Mayer, A. Scholtz\",\"doi\":\"10.1109/ICEAA.2010.5652229\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We present an active interrogator antenna for UHF RFID (radio-frequency identification) systems which is capable of transmitting electromagnetic radiation at any desired polarization and with adjustable transmit power. We use a dual-polarized patch antenna originally radiating linear polarization in +45° and −45° direction and feed each input with signals that can be adjusted in both phase and amplitude by two vector modulators. The vector modulators are controlled by a microprocessor that provides an RS-232 interface. The antenna also comprises power amplifiers to achieve a maximum transmit power of 2 W at any desired polarization mode. For testing we perform measurements that determine the radiation pattern and polarization mode of a commercially available transponder and find very good agreement with simulation results.\",\"PeriodicalId\":375707,\"journal\":{\"name\":\"2010 International Conference on Electromagnetics in Advanced Applications\",\"volume\":\"105 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-12-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2010 International Conference on Electromagnetics in Advanced Applications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICEAA.2010.5652229\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 International Conference on Electromagnetics in Advanced Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICEAA.2010.5652229","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A polarization- and power-agile interrogator antenna for UHF RFID systems
We present an active interrogator antenna for UHF RFID (radio-frequency identification) systems which is capable of transmitting electromagnetic radiation at any desired polarization and with adjustable transmit power. We use a dual-polarized patch antenna originally radiating linear polarization in +45° and −45° direction and feed each input with signals that can be adjusted in both phase and amplitude by two vector modulators. The vector modulators are controlled by a microprocessor that provides an RS-232 interface. The antenna also comprises power amplifiers to achieve a maximum transmit power of 2 W at any desired polarization mode. For testing we perform measurements that determine the radiation pattern and polarization mode of a commercially available transponder and find very good agreement with simulation results.
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