{"title":"A 6 GHz 130 nm CMOS Harmonic Recombination RF Receiver Front-End Using N-Path Filtering","authors":"Nakisa Shams, A. Abbasi, F. Nabki","doi":"10.1109/NEWCAS49341.2020.9159795","DOIUrl":null,"url":null,"abstract":"An RF receiver front-end using two feedforward N-path switching filters and harmonic-recombination configuration is presented. As the time-variant nature of the N-path filter introduces multiple frequency translations, third harmonic selection of the switching frequency rather than the fundamental helps to reduce the input frequency of the multiphase clock generator by a factor of three. The proposed 5.9-7.1 GHz RF receiver operates at the third harmonic of the local oscillator, thanks to the combination of an N-Path switching filter and a harmonic recombination architecture. The receiver is implemented in a 130 nm CMOS technology and operates from a 1.2 V supply. Post-layout simulation results show that, for a 6 GHz RF input, the receiver provides a harmonic rejection of 45 and 55 dB for the first and second harmonics, respectively. A noise figure of 5.5 dB at a 16 MHz baseband frequency is achieved, and an input matching of less than -15 dB is attained over the desired frequency band.","PeriodicalId":135163,"journal":{"name":"2020 18th IEEE International New Circuits and Systems Conference (NEWCAS)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 18th IEEE International New Circuits and Systems Conference (NEWCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NEWCAS49341.2020.9159795","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
An RF receiver front-end using two feedforward N-path switching filters and harmonic-recombination configuration is presented. As the time-variant nature of the N-path filter introduces multiple frequency translations, third harmonic selection of the switching frequency rather than the fundamental helps to reduce the input frequency of the multiphase clock generator by a factor of three. The proposed 5.9-7.1 GHz RF receiver operates at the third harmonic of the local oscillator, thanks to the combination of an N-Path switching filter and a harmonic recombination architecture. The receiver is implemented in a 130 nm CMOS technology and operates from a 1.2 V supply. Post-layout simulation results show that, for a 6 GHz RF input, the receiver provides a harmonic rejection of 45 and 55 dB for the first and second harmonics, respectively. A noise figure of 5.5 dB at a 16 MHz baseband frequency is achieved, and an input matching of less than -15 dB is attained over the desired frequency band.