{"title":"Injection locking circuit techniques for high-efficiency millimeter-wave transmitter arrays in SiGe and CMOS SOI processes","authors":"J. Buckwalter","doi":"10.1109/BCTM.2016.7738975","DOIUrl":null,"url":null,"abstract":"Millimeter-wave systems require circuit innovations that enable high efficiency with complex waveforms. Injection locking circuit techniques are presented that enable low-power outphasing modulation and phase shifting for millimeter-wave radio transmitters integrated in highly-scaled Silicon CMOS and BiCMOS technologies. This paper reviews the efficiency penalties for operating arrays under back-off conditions to compare the advantages of transmit architectures at mm-wave bands. A microwave injection locking outphasing modulator is described to realize wideband, high-efficiency operation confronting these array architectures. An injection-locked outphasing modulator circuit is implemented in 45-nm SOI CMOS and exhibits 22.7% overall system efficiency with 64-QAM at 2.1% EVM. Injection locking techniques for phase shifters are demonstrated to offer high phase and low amplitude variation in a 90-nm SiGe BiCMOS 2 × 2 transmit/receiver phased array at 71-86 GHz.","PeriodicalId":431327,"journal":{"name":"2016 IEEE Bipolar/BiCMOS Circuits and Technology Meeting (BCTM)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE Bipolar/BiCMOS Circuits and Technology Meeting (BCTM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/BCTM.2016.7738975","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
Millimeter-wave systems require circuit innovations that enable high efficiency with complex waveforms. Injection locking circuit techniques are presented that enable low-power outphasing modulation and phase shifting for millimeter-wave radio transmitters integrated in highly-scaled Silicon CMOS and BiCMOS technologies. This paper reviews the efficiency penalties for operating arrays under back-off conditions to compare the advantages of transmit architectures at mm-wave bands. A microwave injection locking outphasing modulator is described to realize wideband, high-efficiency operation confronting these array architectures. An injection-locked outphasing modulator circuit is implemented in 45-nm SOI CMOS and exhibits 22.7% overall system efficiency with 64-QAM at 2.1% EVM. Injection locking techniques for phase shifters are demonstrated to offer high phase and low amplitude variation in a 90-nm SiGe BiCMOS 2 × 2 transmit/receiver phased array at 71-86 GHz.