Najam Muhammad Amin, Farrukh Shahid, Lianfeng Shen, Zhigong Wang, H. Rasheed, Burhan Ahmed
{"title":"1.2–3.8 GHz active quasi-circulator with >30 dB transmit-receive isolation","authors":"Najam Muhammad Amin, Farrukh Shahid, Lianfeng Shen, Zhigong Wang, H. Rasheed, Burhan Ahmed","doi":"10.1109/ICAM.2017.8242188","DOIUrl":null,"url":null,"abstract":"An active quasi-circulator (AQC) operating at a frequency band ranging from 1.2–3.8 GHz is designed in a 0.18-μm CMOS process. To improve the isolation between AQC's ports common-gate (CG), common-source (CS) and common-drain (CD) configurations have been employed. To particularly improve the transmitter-to-receiver port isolation, out-of-phase cancellation is employed by making the transmit signal traverse from two different out-of-phase paths. A figure-of-merit (FOM) has also been proposed to enable a fair comparison of different published works. For the proposed design, simulation results indicate >11 dB return losses (RL) for all three AQC ports. The AQC has maximum insertion losses (IL) of −10 dB and −7.8 dB between transmitter-to-antenna and antenna-to-receiver ports respectively. With a power dissipation of 40 mW, the proposed AQC displays a transmit-receive isolation of >30 dB and a high FOM of 1.948 GHz × mW.","PeriodicalId":117801,"journal":{"name":"2017 2nd IEEE International Conference on Integrated Circuits and Microsystems (ICICM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 2nd IEEE International Conference on Integrated Circuits and Microsystems (ICICM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICAM.2017.8242188","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
An active quasi-circulator (AQC) operating at a frequency band ranging from 1.2–3.8 GHz is designed in a 0.18-μm CMOS process. To improve the isolation between AQC's ports common-gate (CG), common-source (CS) and common-drain (CD) configurations have been employed. To particularly improve the transmitter-to-receiver port isolation, out-of-phase cancellation is employed by making the transmit signal traverse from two different out-of-phase paths. A figure-of-merit (FOM) has also been proposed to enable a fair comparison of different published works. For the proposed design, simulation results indicate >11 dB return losses (RL) for all three AQC ports. The AQC has maximum insertion losses (IL) of −10 dB and −7.8 dB between transmitter-to-antenna and antenna-to-receiver ports respectively. With a power dissipation of 40 mW, the proposed AQC displays a transmit-receive isolation of >30 dB and a high FOM of 1.948 GHz × mW.