High power directional coupler

Details High power directional coupler High power directional coupler

2006-05-23

2006-05-23

Takaoka, Dean (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S246000

Reexamination Certificate

active

07049905

ABSTRACT:
A directional coupler has a multi-layered low temperature co-fired ceramic substrate. A circuit line is located on one of the layers and is connected to an input port and an output port. Another circuit line is located on a different layer and is connected to a forward coupled port and a reverse coupled port. The circuit lines are located close to each other such that they are electromagnetically coupled. Ground planes are located on the top and bottom surfaces of the substrate.

REFERENCES:
patent: 3617952 (1971-11-01), Beech
patent: 5032803 (1991-07-01), Koch
patent: 5742210 (1998-04-01), Chaturvedi et al.
patent: 6208220 (2001-03-01), Logothetis

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