Surface-acoustic-wave device and notch filter device having a pl

Details Surface-acoustic-wave device and notch filter device having a pl Surface-acoustic-wave device and notch filter device having a pl

1989-07-14

1991-07-02

Lee, Benny

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310313R, 333195, H03H 964

Patent

active

050281011

ABSTRACT:
A SAW device uses an input and output transducers having different electrode periods, and includes diode arrays provided in a semiconductor layer under a gate electrode between both transducers, so that the device has an excellent efficiency as a notch filter.

REFERENCES:
patent: 4037174 (1977-07-01), Moore et al.
patent: 4066984 (1978-01-01), Stern et al.
patent: 4458328 (1984-07-01), Kino et al.
patent: 4683395 (1987-07-01), Mitsutsuka
patent: 4697115 (1987-09-01), Mitsutsuka

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