{"title":"跟踪负载以优化射频到直流整流电路的功率效率","authors":"S. Dehghani, S. Abbasian, T. Johnson","doi":"10.1109/WPT.2015.7140165","DOIUrl":null,"url":null,"abstract":"A tracking load circuit for RF rectifiers is described. The tracking load is designed to maximize RF to DC conversion efficiency as the RF input power to the rectifier changes. The circuit consists of two DC to DC converters with two control loops. The duty cycle of the first stage converter is adjusted by an analog control loop to have an input impedance that is optimum for maximizing the power efficiency of the RF rectifier. A second stage converter, either a classical boost or buck converter, converts the fluctuating voltage from the first stage to a regulated output voltage. The application of the tracking load is illustrated with experimental results for a CMOS class D rectifier and a 10 W class F GaN RF rectifier.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":"{\"title\":\"Tracking load to optimize power efficiency in RF to DC rectifier circuits\",\"authors\":\"S. Dehghani, S. Abbasian, T. Johnson\",\"doi\":\"10.1109/WPT.2015.7140165\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A tracking load circuit for RF rectifiers is described. The tracking load is designed to maximize RF to DC conversion efficiency as the RF input power to the rectifier changes. The circuit consists of two DC to DC converters with two control loops. The duty cycle of the first stage converter is adjusted by an analog control loop to have an input impedance that is optimum for maximizing the power efficiency of the RF rectifier. A second stage converter, either a classical boost or buck converter, converts the fluctuating voltage from the first stage to a regulated output voltage. The application of the tracking load is illustrated with experimental results for a CMOS class D rectifier and a 10 W class F GaN RF rectifier.\",\"PeriodicalId\":194427,\"journal\":{\"name\":\"2015 IEEE Wireless Power Transfer Conference (WPTC)\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2015-05-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"8\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2015 IEEE Wireless Power Transfer Conference (WPTC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/WPT.2015.7140165\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 IEEE Wireless Power Transfer Conference (WPTC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WPT.2015.7140165","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Tracking load to optimize power efficiency in RF to DC rectifier circuits
A tracking load circuit for RF rectifiers is described. The tracking load is designed to maximize RF to DC conversion efficiency as the RF input power to the rectifier changes. The circuit consists of two DC to DC converters with two control loops. The duty cycle of the first stage converter is adjusted by an analog control loop to have an input impedance that is optimum for maximizing the power efficiency of the RF rectifier. A second stage converter, either a classical boost or buck converter, converts the fluctuating voltage from the first stage to a regulated output voltage. The application of the tracking load is illustrated with experimental results for a CMOS class D rectifier and a 10 W class F GaN RF rectifier.
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