Directional coupler including impedance matching and...

Details Directional coupler including impedance matching and... Directional coupler including impedance matching and...

2011-06-14

2011-06-14

Takaoka, Dean O (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S116000

Reexamination Certificate

active

07961064

ABSTRACT:
The present invention provides a compact weakly coupled directional coupler combined with an integrated impedance transformation and matching circuit where the impedance transformation and matching circuit facilitates the fabrication of a highly miniaturized directional coupler with optimum electrical performance where the physical dimensions of the coupled transmission lines fall inside the constraints of the fabrication process.

REFERENCES:
patent: 6642809 (2003-11-01), Shin et al.
patent: 6771141 (2004-08-01), Iida et al.
patent: 7026887 (2006-04-01), Watanabe et al.
patent: 7034633 (2006-04-01), Passiopoulos et al.
patent: 7394333 (2008-07-01), Ezzeddine et al.
patent: 2007/0279147 (2007-12-01), Dupont et al.

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