Surface acoustic wave filter with plural substantially identical

Details Surface acoustic wave filter with plural substantially identical Surface acoustic wave filter with plural substantially identical

1998-06-19

2000-05-09

Pascal, Robert

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333195, 310313B, H03H 964

Patent

active

060609648

ABSTRACT:
The surface acoustic wave (SAW) filter has two or more identical acoustic tracks. The input side of the tracks is electrically connected in parallel and the output side is electrically connected in series, whereby the impedance of input side of the SAW filter is reduced relative to the impedance of the individual acoustic tracks.

REFERENCES:
patent: 3550045 (1970-12-01), Adler
patent: 4425554 (1984-01-01), Morishita et al.
patent: 4539502 (1985-09-01), Este et al.
patent: 5379010 (1995-01-01), Ruile et al.
patent: 5475348 (1995-12-01), Hode et al.
"Design of a Low Loss SAW Reflector Filter with Extremely Wide Bandwidth for Mobile Communication Systems" (Muller et al.), IEEE Transactions on Microwave Theory and Techniques, Dec. 1993, No. 12, New York, pp. 2147-2155.

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