Front end module

Details Front end module Front end module

2004-02-09

2008-09-02

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

Reexamination Certificate

active

07420438

ABSTRACT:
A front end module (2) comprises: a triplexer (11) for separating the AMPS band, the PCS band and the GPS band from one another; a duplexer (12) for separating transmission signals and reception signals in the AMPS band from each other; and a duplexer (13) for separating transmission signals and reception signals in the PCS band from each other. The duplexers (12, 13) each include an acoustic wave element that functions as a filter. A single multilayer substrate is used to integrate the triplexer (11) and the duplexers (12, 13). The triplexer (11) is made up of conductor layers located inside or on the surface of the multilayer substrate.

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