DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Min-Chul | ko |
dc.contributor.author | Kwak, Tae-Woo | ko |
dc.contributor.author | Choi, Bae-Kun | ko |
dc.contributor.author | Cho, Gyu-Hyeong | ko |
dc.date.accessioned | 2008-08-01T01:11:04Z | - |
dc.date.available | 2008-08-01T01:11:04Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2008-05 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, v.55, pp.484 - 488 | - |
dc.identifier.issn | 1549-7747 | - |
dc.identifier.uri | http://hdl.handle.net/10203/6755 | - |
dc.description.abstract | For Class-E1 EDGE polar transmitters, we proposed a 4-W master-slave switching amplitude modulator (MS-SAM) for both high efficiency and wide bandwidth. It consists of a combination of two step-down modules with different switching frequencies and different switch sizes. The master module was designed for wide bandwidth and the slave module for high efficiency. The paper also presents a new current-sensing circuit based on a sample-and-hold circuit operable under a high switching frequency (> 40 MHz). We showed the topologies and operating principles. The chip was fabricated in a standard 0.35-mu m CMOS process with an area of 6.45 mm(2). The MS-SAM could drive the amplifiers of up to 4-W RF power in the experiment. We obtained an efficiency of 89%, and the converter's bandwidth was wide enough to meet the EDGE spectral requirements. | - |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | A 4-w master-slave switching amplitude modulator for Class-E1 EDGE polar transmitters | - |
dc.type | Article | - |
dc.identifier.wosid | 000256053600021 | - |
dc.identifier.scopusid | 2-s2.0-44849093858 | - |
dc.type.rims | ART | - |
dc.citation.volume | 55 | - |
dc.citation.beginningpage | 484 | - |
dc.citation.endingpage | 488 | - |
dc.citation.publicationname | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | - |
dc.identifier.doi | 10.1109/TCSII.2007.914432 | - |
dc.contributor.localauthor | Cho, Gyu-Hyeong | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | amplitude modulation | - |
dc.subject.keywordAuthor | dc-dc power converter | - |
dc.subject.keywordAuthor | current-sensing circuit | - |
dc.subject.keywordAuthor | EDGE | - |
dc.subject.keywordAuthor | polar transmitter | - |
dc.subject.keywordAuthor | sample-and-hold (S/H) circuit | - |
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