Directional coupler

Details Directional coupler Directional coupler

2007-05-15

2007-05-15

Takaoka, Dean (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S246000

Reexamination Certificate

active

10810416

ABSTRACT:
A directional coupler for low frequencies that is small and can handle high power levels. The directional coupler includes a pair of circuit lines having an input port, an output port, a forward coupled port and a reverse coupled port. The circuit lines are located proximate to each other such that they are electromagnetically coupled. A low pass filter is connected to the forward coupled port. The low pass filter shifts the operating frequency of the directional coupler.

REFERENCES:
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patent: 5689217 (1997-11-01), Gu et al.
patent: 5742210 (1998-04-01), Chaturvedi et al.
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patent: 6756859 (2004-06-01), Kodim
patent: 6791274 (2004-09-01), Hauer et al.
patent: 6804099 (2004-10-01), Michon et al.

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