DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Chul | ko |
dc.contributor.author | Chae, Chang-Seok | ko |
dc.contributor.author | Yuk, Young-Sub | ko |
dc.contributor.author | Thomas, Chris M. | ko |
dc.contributor.author | Kim, Yi-Gyeong | ko |
dc.contributor.author | Kwon, Jong-Kee | ko |
dc.contributor.author | Ha, Sohmyung | ko |
dc.contributor.author | Cauwenberghs, Gert | ko |
dc.contributor.author | Cho, Gyu-Hyeong | ko |
dc.date.accessioned | 2018-06-19T08:28:42Z | - |
dc.date.available | 2018-06-19T08:28:42Z | - |
dc.date.created | 2018-06-18 | - |
dc.date.created | 2018-06-18 | - |
dc.date.created | 2018-06-18 | - |
dc.date.created | 2018-06-18 | - |
dc.date.issued | 2018-06 | - |
dc.identifier.citation | IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.53, no.6, pp.1653 - 1665 | - |
dc.identifier.issn | 0018-9200 | - |
dc.identifier.uri | http://hdl.handle.net/10203/242613 | - |
dc.description.abstract | The parallel combination of a switching and a linear amplifier in the supply modulator for RF power amplifiers (PAs) has the potential to enhance energy efficiency while achieving wider bandwidth and lower ripple output voltage. In this paper, a linear amplifier that features a buffered-switching Class-AB bias scheme is presented for the supply modulator in polar-transmitter structures achieving 500 MHz of small-signal 3-dB bandwidth at a 1.2-V supply. The linear amplifier absorbs and cancels up to 60 mA of ripple current from the switching amplifier. As such, the ripple in the output voltage of the hybrid linear-switching supply modulator is less than 7.5 mVpp. The switching amplifier provides most of the signal current for greatest efficiency owing to a proposed rail-to-rail current-sensing circuit. Current feedback in the switching amplifier achieves 1.68-MHz unity-gain bandwidth at 6-MHz switching frequency. Harmonic distortion in the output voltage of the supply modulator is below 40 dBc at 0.8 V-pp sinusoidal input up to 9 MHz. The peak efficiency is 87.7% for a 8.25-Omega load, while the maximum output power is 23.6 dBm for a 4.99-Omega load. The chip measures 1.35 mm(2) in a 65-nm standard bulk CMOS process. | - |
dc.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | A 500-MHz Bandwidth 7.5-mV(pp) Ripple Power-Amplifier Supply Modulator for RF Polar Transmitters | - |
dc.type | Article | - |
dc.identifier.wosid | 000433336200008 | - |
dc.identifier.scopusid | 2-s2.0-85042865724 | - |
dc.type.rims | ART | - |
dc.citation.volume | 53 | - |
dc.citation.issue | 6 | - |
dc.citation.beginningpage | 1653 | - |
dc.citation.endingpage | 1665 | - |
dc.citation.publicationname | IEEE JOURNAL OF SOLID-STATE CIRCUITS | - |
dc.identifier.doi | 10.1109/JSSC.2018.2804043 | - |
dc.contributor.localauthor | Kim, Chul | - |
dc.contributor.localauthor | Cho, Gyu-Hyeong | - |
dc.contributor.nonIdAuthor | Chae, Chang-Seok | - |
dc.contributor.nonIdAuthor | Yuk, Young-Sub | - |
dc.contributor.nonIdAuthor | Thomas, Chris M. | - |
dc.contributor.nonIdAuthor | Kim, Yi-Gyeong | - |
dc.contributor.nonIdAuthor | Kwon, Jong-Kee | - |
dc.contributor.nonIdAuthor | Ha, Sohmyung | - |
dc.contributor.nonIdAuthor | Cauwenberghs, Gert | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Class-AB bias | - |
dc.subject.keywordAuthor | current feedback | - |
dc.subject.keywordAuthor | current sensing | - |
dc.subject.keywordAuthor | envelope elimination and restoration | - |
dc.subject.keywordAuthor | hybrid supply modulator (HSM) | - |
dc.subject.keywordAuthor | open-loop gate driver polar transmitter | - |
dc.subject.keywordAuthor | three-stage amplifier | - |
dc.subject.keywordAuthor | wide bandwidth | - |
dc.subject.keywordPlus | ENVELOPE AMPLIFIER | - |
dc.subject.keywordPlus | CMOS | - |
dc.subject.keywordPlus | REGULATORS | - |
dc.subject.keywordPlus | EDGE | - |
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