Multilayer diplexer

Details Multilayer diplexer Multilayer diplexer

2007-03-27

2007-03-27

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S100000, C333S132000, C333S185000, C370S297000, C455S078000, C455S082000

Reexamination Certificate

active

11024352

ABSTRACT:
A multilayer diplexer has a first I/O terminal, a second I/O terminal, an antenna terminal, a high-pass filter coupled between the antenna terminal and the second I/O terminal, and a low-pass filter coupled between the antenna terminal and the first I/O terminal. The high-pass filter has a first capacitor and a second capacitor connected in serial coupled between the antenna terminal and the second I/O terminal, a fourth capacitor coupled between the antenna terminal and the second I/O terminal, and a first inductor coupled between a connection node of the first and second capacitors and a reference ground. The low-pass filter has a second inductor coupled between the antenna terminal and the first I/O terminal, and a third and fifth capacitor connected in parallel coupled between the antenna terminal and the first I/O terminal.

REFERENCES:
patent: 4499495 (1985-02-01), Strammello
patent: 6411178 (2002-06-01), Matsumura et al.
patent: 6621400 (2003-09-01), Horie
patent: 6937845 (2005-08-01), Watanabe et al.
patent: 6975841 (2005-12-01), Uriu et al.
patent: 2006/0006960 (2006-01-01), Lin et al.
patent: 2001267872 (2001-09-01), None

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