Directional coupler

Details Directional coupler Directional coupler

2009-02-23

2011-11-22

Takaoka, Dean (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S238000

Reexamination Certificate

active

08063715

ABSTRACT:
A directional coupler which can adjust a degree of coupling easily and by comparatively low cost is provided. A directional coupler has a substrate, a 1st transmission line formed on the substrate, a 2nd transmission line formed on the substrate, and a coupling substrate provided with a 3rd transmission line and a 4th transmission line which form a coupling part. The coupling substrate is attached to the substrate so that the coupling part may be inserted in the 1st transmission line and 2nd transmission line.

REFERENCES:
patent: 3979699 (1976-09-01), Caragliano et al.
patent: 5032803 (1991-07-01), Koch
patent: 5745017 (1998-04-01), Ralph
patent: 6956449 (2005-10-01), Snyder et al.

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