Duplexer comprising a SAW filter disposed on a multi-layer subst

Details Duplexer comprising a SAW filter disposed on a multi-layer subst Duplexer comprising a SAW filter disposed on a multi-layer subst

1997-07-16

2000-05-09

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333247, 455 83, H01P 115, H01P 512, H04B 148

Patent

active

060609605

ABSTRACT:
A duplexer includes a high-frequency switch, an LC filter serving as a low-pass filter, and an SAW filter serving as a band-pass filter. The high-frequency switch includes diodes, capacitors, and transmission lines. The LC filter includes capacitors and transmission lines. The high-frequency switch and LC filter are built into a multi-layer ceramic substrate, while the diodes of the high-frequency switch and the SAW filter are mounted on the substrate. The substrate is made of a low-temperature-baked ceramic material.

REFERENCES:
patent: 5483678 (1996-01-01), Abe
patent: 5783976 (1998-07-01), Furutani et al.

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