DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김진영 | - |
dc.contributor.author | 김인동 | - |
dc.contributor.author | Moon, Won-Kyu | - |
dc.date.accessioned | 2018-06-15T05:30:56Z | - |
dc.date.available | 2018-06-15T05:30:56Z | - |
dc.date.created | 2017-09-19 | - |
dc.date.issued | 2017-12 | - |
dc.identifier.issn | 1975-8359 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/50555 | - |
dc.description.abstract | Parametric array transducers are used for highly directional speaker in an air environments. Piezoelectric micromachined ultrasonic transducers for parametric array transducers need DC-biased voltage driving signals in order to get high-directional quality-sound features. The existing power amplifier such as class A amplifiers has low efficiency and require large volume heatsinks. To overcome the above-mentioned disadvantages of the conventional amplifier, this paper proposes a new power amplifier system. The proposed power amplifier system ensures high linearity of output characteristic by utilizing the push-pull class B type amplifier. Furthermore, the proposed power amplifier system gets high efficiency because it contains the DC-DC converter-type power supply which can perform energy recovery and envelope tracking function. Also the paper suggests the detailed circuit topology. Its characteristics are verified by the detailed experimental results. | - |
dc.language | Korean | - |
dc.publisher | 대한전기학회 | - |
dc.relation.isPartOf | 전기학회논문지 | - |
dc.subject | pMUT | - |
dc.subject | Power amplifier | - |
dc.subject | Private audio communication system | - |
dc.subject | Quasi envelope tracking | - |
dc.title | 고지향성 스피커를 위한 새로운 전력 증폭기 설계 | - |
dc.title.alternative | Design of High-efficiency Power Amplifier System for High-directional Speaker | - |
dc.type | Article | - |
dc.identifier.doi | 10.5370/KIEE.2017.66.8.1215 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | 전기학회논문지, v.66, no.8, pp.1215 - 1221 | - |
dc.identifier.kciid | ART002248986 | - |
dc.citation.endPage | 1221 | - |
dc.citation.number | 8 | - |
dc.citation.startPage | 1215 | - |
dc.citation.title | 전기학회논문지 | - |
dc.citation.volume | 66 | - |
dc.contributor.affiliatedAuthor | Moon, Won-Kyu | - |
dc.identifier.scopusid | 2-s2.0-85030639390 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | rotation reversal | - |
dc.subject.keywordAuthor | KSTAR | - |
dc.subject.keywordAuthor | anchor point | - |
dc.subject.keywordAuthor | gradient region | - |
dc.subject.keywordAuthor | intrinsic rotation | - |
dc.subject.keywordAuthor | Ohmic plasma | - |
dc.subject.keywordAuthor | momentum transport | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
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