Design of phase shifters for a group type unidirectional transducer based on interaction analysis

Hiroshi Nogami, Takashi Shiba, Yoshihiko Noro, Akitsuna Yuhara, Koji Oda

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


A group type unidirectional transducer (CHIT) is useful for a low loss SAW filter. The multi-port network expressions for the GUT are presented, and interaction between the inphase(I) and quadrature(Q) electrodes is studied analytically. The conditions for perfect unidirectivity are described. The design procedures of the phase shifters realizing perfect unidirectivity are shown both in series and parallel configurations for any geometrical phase except π.

Original languageEnglish
Article number234150
Pages (from-to)175-180
Number of pages6
JournalProceedings - IEEE Ultrasonics Symposium
Publication statusPublished - 1991
Event1991 IEEE Ultrasonics Symposium. ULTSYM 1991 - Orlando, United States
Duration: 1991 Dec 81991 Dec 11

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