Power transmission characteristics of EWC-SPUDT SAW filters fabricated for multiplex transmission system of inverter gate drive circuits

To increase the electrical power transmission of surface acoustic wave (SAW) filters for gate drive systems of power conversion circuits, we fabricated unidirectional SAW filters based on a SiO2/Al/Pt/LiNbO3 structure in the frequency range of 380-950 MHz and measured their power durability characte...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 59; no. SK; p. SKKC05
Main Authors Watada, Ken, Goka, Shigeyoshi, Kakio, Shoji, Kobayashi, Fumiya, Nonaka, Ryo, Wada, Keiji
Format Journal Article
LanguageEnglish
Published Tokyo IOP Publishing 01.07.2020
Japanese Journal of Applied Physics
Subjects
Circuits
Electric filters
Electric power transmission
Electricity distribution
Energy conversion
FDMA
Frequency ranges
Gate Drive Circuit
Insertion loss
Lithium niobates
Multi Level Inverter
SAW
Silicon dioxide
Surface acoustic waves
Wave filters
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Summary:To increase the electrical power transmission of surface acoustic wave (SAW) filters for gate drive systems of power conversion circuits, we fabricated unidirectional SAW filters based on a SiO2/Al/Pt/LiNbO3 structure in the frequency range of 380-950 MHz and measured their power durability characteristics. A transversal-type electrode-width-controlled single-phase unidirectional transducer (EWC-SPUDT) design was used to reduce the insertion loss of the SAW filters. Our experimental results showed that the transmitted electric power of the output port exceeded 560 mW, which was sufficient for the gate drive circuits. The results obtained demonstrate the validity of the SiO2/Al/Pt/LiNbO3 structure for the proposed EWC-SPUDT design.
Bibliography:JJAP-S1101694.R2
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/ab85ab