Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2006-02-14
2006-02-14
Takaoka, Dean (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S112000
Reexamination Certificate
active
06998936
ABSTRACT:
A directional coupler comprises, arranged on a substrate, two first ports connected by a first line and two second ports connected by a second line. The lines extend through a coupling zone in which they are separated by a conductor area not connected to the lines.
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Kirschstein et al.
Marconi Communications GmbH
Takaoka Dean
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