Harmonic-Reduced Bias Circuit for Ultrasound Transducers
DC Field | Value | Language |
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dc.contributor.author | Choi, Hojong | - |
dc.date.accessioned | 2023-06-01T11:40:43Z | - |
dc.date.available | 2023-06-01T11:40:43Z | - |
dc.date.created | 2023-05-05 | - |
dc.date.issued | 2023-04 | - |
dc.identifier.issn | 1424-8220 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88016 | - |
dc.description.abstract | The gain of class-C power amplifiers is generally lower than that of class-A power amplifiers. Thus, higher-amplitude input voltage signals for class-C power amplifiers are required. However, high-amplitude input signals generate unwanted harmonic signals. Therefore, a novel bias circuit was proposed to suppress the harmonic signals generated by class-C power amplifiers, which improves the output voltage amplitudes. To verify the proposed idea, the input harmonic signals when using a harmonic-reduced bias circuit (−61.31 dB, −89.092 dB, −90.53 dB, and −90.32 dB) were measured and were found to be much lower than those when using the voltage divider bias circuit (−57.19 dB, −73.49 dB, −70.97 dB, and −73.61 dB) at 25 MHz, 50 MHz, 75 MHz, and 100 MHz, respectively. To further validate the proposed idea, the pulse-echo measurements were compared using the bias circuits. The peak-to-peak echo amplitude and bandwidth of the piezoelectric transducer, measured when using a harmonic-reduced bias circuit (27.07 mV and 37.19%), were higher than those achieved with a voltage divider circuit (18.55 mV and 22.71%). Therefore, the proposed scheme may be useful for ultrasound instruments with low sensitivity. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | MDPI | - |
dc.relation.isPartOf | Sensors | - |
dc.title | Harmonic-Reduced Bias Circuit for Ultrasound Transducers | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000986989800001 | - |
dc.identifier.doi | 10.3390/s23094438 | - |
dc.identifier.bibliographicCitation | Sensors, v.23, no.9 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.scopusid | 2-s2.0-85159198233 | - |
dc.citation.title | Sensors | - |
dc.citation.volume | 23 | - |
dc.citation.number | 9 | - |
dc.contributor.affiliatedAuthor | Choi, Hojong | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | harmonic-reduced bias circuit | - |
dc.subject.keywordAuthor | ultrasound instrument | - |
dc.subject.keywordAuthor | ultrasound transducer | - |
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.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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