Duplexer and communication apparatus with a matching circuit...

Details Duplexer and communication apparatus with a matching circuit... Duplexer and communication apparatus with a matching circuit...

2006-01-03

2006-01-03

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S126000, C333S129000, C333S132000

Reexamination Certificate

active

06982612

ABSTRACT:
A duplexer includes a transmitting filter and a receiving filter which are connected in parallel to an antenna terminal, and a matching circuit connected between the antenna terminal and at least one of the transmitting filter and the receiving filter. A portion of the matching circuit defines a trap circuit for harmonic suppression.

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