Surface acoustic wave filter duplexer comprising a multi-layer p

Details Surface acoustic wave filter duplexer comprising a multi-layer p Surface acoustic wave filter duplexer comprising a multi-layer p

1996-05-31

1998-07-28

Pascal, Robert J.

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333193, H03H 972

Patent

active

057867380

ABSTRACT:
In a duplexer, phase matching circuit patterns corresponding to filter chips are formed on a surface layer of a multi-layer ceramic package provided with filter chips having different central frequencies. An end of each of the phase matching circuit patterns is connected to a common terminal pattern.

REFERENCES:
patent: 4737742 (1988-04-01), Takoshima et al.
patent: 5554960 (1996-09-01), Ohnuki et al.
patent: 5561406 (1996-10-01), Ikata et al.

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