Class-C Linearized Amplifier for Portable Ultrasound Instruments
DC Field | Value | Language |
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dc.contributor.author | Choi, Hojong | - |
dc.date.accessioned | 2023-12-11T18:00:30Z | - |
dc.date.available | 2023-12-11T18:00:30Z | - |
dc.date.issued | 2019-02-02 | - |
dc.identifier.issn | 1424-8220 | - |
dc.identifier.issn | 1424-3210 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/25559 | - |
dc.description.abstract | Transistor linearizer networks are proposed to increase the transmitted output voltage amplitudes of class-C amplifiers, thus, increasing the sensitivity of the echo signals of piezoelectric transducers, which are the main components in portable ultrasound instruments. For such instruments, class-C amplifiers could be among the most efficient amplifier schemes because, compared with a linear amplifier such as a class-A amplifier, they could critically reduce direct current (DC) power consumption, thus, increasing the battery life of the instruments. However, the reduced output voltage amplitudes of class-C amplifiers could deteriorate the sensitivity of the echo signals, thereby affecting the instrument performance. Therefore, a class-C linearized amplifier was developed. To verify the capability of the class-C linearized amplifier, typical pulse-echo responses using the focused piezoelectric transducers were tested. The echo signal amplitude generated by the piezoelectric transducers when using the class-C linearized amplifier was improved (1.29 Vp-p) compared with that when using the class-C amplifier alone (0.56 Vp-p). Therefore, the class-C linearized amplifier could be a potential candidate to increase the sensitivity of echo signals while reducing the DC power consumption for portable ultrasound instruments. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | MDPI | - |
dc.title | Class-C Linearized Amplifier for Portable Ultrasound Instruments | - |
dc.type | Article | - |
dc.publisher.location | 스위스 | - |
dc.identifier.doi | 10.3390/s19040898 | - |
dc.identifier.wosid | 000460829200149 | - |
dc.identifier.bibliographicCitation | SENSORS, v.19, no.4 | - |
dc.citation.title | SENSORS | - |
dc.citation.volume | 19 | - |
dc.citation.number | 4 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.subject.keywordPlus | TRANSDUCER | - |
dc.subject.keywordPlus | ARRAY | - |
dc.subject.keywordAuthor | class-C amplifier | - |
dc.subject.keywordAuthor | transistor linearizer | - |
dc.subject.keywordAuthor | portable ultrasound instruments | - |
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