Surface-acoustic-wave three interdigital electrodes with differe

Details Surface-acoustic-wave three interdigital electrodes with differe Surface-acoustic-wave three interdigital electrodes with differe

1999-07-30

2000-08-29

Pascal, Robert

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333195, 310313B, H03H 964

Patent

active

061114812

ABSTRACT:
A double-mode surface-acoustic device having a piezoelectric substrate with two reflectors placed on the piezoelectric substrate and first through third interdigital electrodes placed on the substrate consecutively between the two reflectors. Each electrode containing first through third number of pairs of electrode fingers, respectively.

REFERENCES:
patent: 4365219 (1982-12-01), Nathan
patent: 5130681 (1992-07-01), Ohnuki et al.
patent: 5309126 (1994-05-01), Allen
patent: 5334960 (1994-08-01), Penunuri
patent: 5363074 (1994-11-01), Higgins, Jr.
patent: 5485052 (1996-01-01), Seki et al.
patent: 5666092 (1997-09-01), Yamamoto et al.
patent: 5874868 (1999-02-01), Shimoe
T. Morita et al., "900 MHZ Range Wideband Double Mode Saw Filters", Toyo Communication Equipment Co., Ltd., May 28, 1992, pp. 7-16. (Translation provided).

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