Interdigital transducers with control gates on AlGaN/GaN heterostructures

Naoteru Shigekawa, Kazumi Nishimura, Tetsuya Suemitsu, Haruki Yokoyama, Kohji Hohkawa

研究成果: Article査読

11 被引用数 (Scopus)

抄録

We investigated surface acoustic wave (SAW) filters composed of interdigital transducers with control gates formed on AlGaN/GaN heterostructures. The contribution of SAWs appeared in the rf characteristics of the SAW filters when reverse-bias voltages were applied to the control gates and the GaN channels were depleted. We also observed higher-frequency signals due to SAWs in transducers with positively-biased control gates. These results suggest that SAW-based functional devices are achievable by employing transducers in which rf signals for exciting SAWs and control signals for modulating SAW properties are applied to different terminals.

本文言語English
論文番号033501
ジャーナルApplied Physics Letters
89
3
DOI
出版ステータスPublished - 2006 7 28
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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