Wave transmission lines and networks – Coupling networks – With impedance matching
Reexamination Certificate
2006-01-31
2006-01-31
Jones, Stephen E. (Department: 2817)
Wave transmission lines and networks
Coupling networks
With impedance matching
C333S017300, C330S195000, C330S197000
Reexamination Certificate
active
06992543
ABSTRACT:
A circuit for matching the impedance of an output load to an active device includes a transformer including a first winding having a terminal for coupling to the output of the active device and a second winding electromagnetically coupled to the first winding, and a plurality of taps, each of the plurality of taps having a first end coupled to a position on the second winding corresponding to a ratio of the second winding to first winding differing from other ones of the plurality of taps, and a second end. The matching circuit further includes a plurality of MEMS switches each having a control input for receiving a corresponding control signal, a first terminal coupled to the second end of a corresponding one of the plurality of taps, and a switched output selectively coupled to a matching junction in response to the corresponding control signal.
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Luetzelschwab Roland C.
McMillan Lee A.
Streeter Robert D.
Daly, Crowley & Mofford & Durkee, LLP
Jones Stephen E.
Raytheon Company
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