Surface acoustic wave filter duplexer and communications apparat

Details Surface acoustic wave filter duplexer and communications apparat Surface acoustic wave filter duplexer and communications apparat

1999-05-11

2000-11-21

Pascal, Robert

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333193, 310313B, H03H 964, H03H 972

Patent

active

061509000

ABSTRACT:
A surface acoustic wave filter includes edge-reflection type surface acoustic wave resonators arranged as series and parallel arm resonators and connected in a ladder configuration. The edge-reflection type surface acoustic wave resonators defining the series and parallel arm resonators are disposed on a single common substrate and arranged so as to be substantially parallel to the end surface of the edge-reflection type surface acoustic wave resonators.

REFERENCES:
patent: 5714830 (1998-02-01), Kadota et al.
patent: 5767603 (1998-06-01), Kadota et al.
patent: 5814917 (1998-09-01), Isobe et al.
patent: 5952899 (1999-09-01), Kadota et al.
Search Report and Written Opinion by Austrian Patent Office Application No. 9901993-7 Filing date Apr. 30, 1999.

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