{"title":"5G通信系统中改进的rfin - rout宽带预失真器","authors":"Karan Gumber, M. Rawat","doi":"10.1109/ISCAS.2018.8351123","DOIUrl":null,"url":null,"abstract":"A low cost RFin-RFout Broadband-Predistorter Circuit (BB-PDC) has been designed to target higher order intermodes (IM) of high power amplifier in the 5G base station, which require higher bandwidth operation. Compared with the existing PDC, proposed BB-PDC exhibit better adjacent channel power ratio (ACPR) performance and provide cost effective linearization solution using passive component. Proposed BB-PDC poses several advantages over digital and hybrid envelope predistortion methods that includes compact size, simple circuitry, ability to process ultra-wideband signals and relaxation from power hungry as well as expensive data converters. It suffers from the limitation on the amount of intermodulation reduction achievable compared with the digital system. Performance of proposed PDC was verified using two tone signal with frequency spacing of 150MHz. Measurement results demonstrate the system dexterity and targets the higher order intermodes. For 150MHz two tone signal, IM3, IM5, and IM7 are reduced by 12.8dB, 10.5dB, and 6.8dB correspondingly.","PeriodicalId":91083,"journal":{"name":"IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems","volume":"189 1","pages":"1-5"},"PeriodicalIF":0.0000,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modified RFin-RFout broadband predistorter for 5G communication system\",\"authors\":\"Karan Gumber, M. Rawat\",\"doi\":\"10.1109/ISCAS.2018.8351123\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A low cost RFin-RFout Broadband-Predistorter Circuit (BB-PDC) has been designed to target higher order intermodes (IM) of high power amplifier in the 5G base station, which require higher bandwidth operation. Compared with the existing PDC, proposed BB-PDC exhibit better adjacent channel power ratio (ACPR) performance and provide cost effective linearization solution using passive component. Proposed BB-PDC poses several advantages over digital and hybrid envelope predistortion methods that includes compact size, simple circuitry, ability to process ultra-wideband signals and relaxation from power hungry as well as expensive data converters. It suffers from the limitation on the amount of intermodulation reduction achievable compared with the digital system. Performance of proposed PDC was verified using two tone signal with frequency spacing of 150MHz. Measurement results demonstrate the system dexterity and targets the higher order intermodes. For 150MHz two tone signal, IM3, IM5, and IM7 are reduced by 12.8dB, 10.5dB, and 6.8dB correspondingly.\",\"PeriodicalId\":91083,\"journal\":{\"name\":\"IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems\",\"volume\":\"189 1\",\"pages\":\"1-5\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2018-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISCAS.2018.8351123\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISCAS.2018.8351123","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Modified RFin-RFout broadband predistorter for 5G communication system
A low cost RFin-RFout Broadband-Predistorter Circuit (BB-PDC) has been designed to target higher order intermodes (IM) of high power amplifier in the 5G base station, which require higher bandwidth operation. Compared with the existing PDC, proposed BB-PDC exhibit better adjacent channel power ratio (ACPR) performance and provide cost effective linearization solution using passive component. Proposed BB-PDC poses several advantages over digital and hybrid envelope predistortion methods that includes compact size, simple circuitry, ability to process ultra-wideband signals and relaxation from power hungry as well as expensive data converters. It suffers from the limitation on the amount of intermodulation reduction achievable compared with the digital system. Performance of proposed PDC was verified using two tone signal with frequency spacing of 150MHz. Measurement results demonstrate the system dexterity and targets the higher order intermodes. For 150MHz two tone signal, IM3, IM5, and IM7 are reduced by 12.8dB, 10.5dB, and 6.8dB correspondingly.
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