{"title":"Low noise integrated active antenna as image reject mixer (IRM)","authors":"W. Ismail, P. Gardner","doi":"10.1109/HFPSC.2001.962179","DOIUrl":null,"url":null,"abstract":"A patch antenna integrated with two Low Noise Amplifiers (LNA) is implemented to act as an Image Reject Mixer (IRM). The low noise active antenna system transforms a received radio frequency signal into two signals, which are out-of phase to each other. The image signals can be cancelled by the IRM. The antenna, LNA's, mixers and local oscillator (LO) are integrated into a single Active Integrated Antenna (AIA) module. An external IF 90/spl deg/ hybrid coupler is required in the IRM. The advantages of the LNA active antenna mixer system are low noise, image signal rejection, low cost and simple circuitry of front-end, and improved receiver sensitivity.","PeriodicalId":129428,"journal":{"name":"6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574)","volume":"217 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2001-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/HFPSC.2001.962179","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
A patch antenna integrated with two Low Noise Amplifiers (LNA) is implemented to act as an Image Reject Mixer (IRM). The low noise active antenna system transforms a received radio frequency signal into two signals, which are out-of phase to each other. The image signals can be cancelled by the IRM. The antenna, LNA's, mixers and local oscillator (LO) are integrated into a single Active Integrated Antenna (AIA) module. An external IF 90/spl deg/ hybrid coupler is required in the IRM. The advantages of the LNA active antenna mixer system are low noise, image signal rejection, low cost and simple circuitry of front-end, and improved receiver sensitivity.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
