Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2005-04-19
2005-04-19
Young, Brian (Department: 2819)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S033000
Reexamination Certificate
active
06882243
ABSTRACT:
An improved directional coupler is distinguished by the following features:an attenuation circuit is adjacent and is connected to each of the two coupling line ends on the coupler substrate, or an attenuation circuit is connected to one coupling line end with a terminating resistor (49) being connected to the other coupling line end on the coupler substrate,electrical level evaluation is provided on the coupler substrate, andan interface device for connection of possibly unshielded cables is provided on the coupler substrate, or possibly unshielded cables are connected to the level evaluation circuit device or are connected downstream from this on the coupler substrate, via which the RF signals which are obtained via the coupling line piece can be passed on in the form of analog signals.
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Mylvaganam, KS, “Coaxial Line to Stripline Directional Coupler,” IEE Proceedings H. Microwaves, Antennas & Rpopagation, Institution of Electrical Engineers, Stevenage, GB, Bd. 134, Nr. 2 (Apr. 1987).
Krause Rainer
Kummer Bernhard
Kathrein-Werke KG
Lauture Joseph
Nixon & Vanderhye P.C.
Young Brian
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