2-Phase 3-Level Envelope Tracking Supply Modulator with Mismatch-free Duty Cycles Achieving 88.6% Peak Efficiency for a 20MHz LTE RF Power Amplifier

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dc.contributor.authorGwon, Hui Dongko
dc.contributor.authorBang, Jun-Sukko
dc.contributor.authorYoon, Kye Seokko
dc.contributor.authorPark, Se-Hongko
dc.contributor.authorPark, Sanghuiko
dc.contributor.authorJung, Min-Yongko
dc.contributor.authorLee, Sang Hanko
dc.contributor.authorKim, Min Wooko
dc.contributor.authorHong, Sung-Wanko
dc.contributor.authorCho, Gyu-Hyeongko
dc.date.accessioned2018-08-20T06:50:47Z-
dc.date.available2018-08-20T06:50:47Z-
dc.date.created2017-11-29-
dc.date.issued2018-04-
dc.identifier.citationIEEE TRANSACTIONS ON POWER ELECTRONICS, v.33, no.4, pp.2815 - 2819-
dc.identifier.issn0885-8993-
dc.identifier.urihttp://hdl.handle.net/10203/244702-
dc.description.abstractThis paper presents a 2-phase 3-level (2P3L) envelope tracking supply modulator (ETSM) for a 20 MHz LTE RF power amplifier (PA) as a solution for the envelope tracking (ET) system. This 2P3L ETSM that is composed of only switching converters achieves high efficiency, fast transient response, and a small output current ripple. To properly operate the proposed 2P3L ETSM, 4 PWM signals with a 90° phase shift from each PWM signal are required without any mismatch between duty cycles. To remove the mismatch, a time-division multiplexing comparator (TDMC) and a duty-cycle calibrator (DCC) are proposed. Thanks to the proposed techniques, the proposed ETSM fabricated in 0.18 μm CMOS achieved the highest peak dynamic efficiency of 88.6% with a LTE20 signal, which is superior to the state-of-the-art systems.-
dc.languageEnglish-
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC-
dc.title2-Phase 3-Level Envelope Tracking Supply Modulator with Mismatch-free Duty Cycles Achieving 88.6% Peak Efficiency for a 20MHz LTE RF Power Amplifier-
dc.typeArticle-
dc.type.rimsART-
dc.citation.volume33-
dc.citation.issue4-
dc.citation.beginningpage2815-
dc.citation.endingpage2819-
dc.citation.publicationnameIEEE TRANSACTIONS ON POWER ELECTRONICS-
dc.identifier.doi10.1109/TPEL.2017.2754651-
dc.contributor.localauthorCho, Gyu-Hyeong-
dc.contributor.nonIdAuthorJung, Min-Yong-
dc.contributor.nonIdAuthorHong, Sung-Wan-
dc.description.isOpenAccessN-
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