Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2006-12-11
2009-11-10
Le, Nhan T (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S333000, C455S338000
Reexamination Certificate
active
07616934
ABSTRACT:
A method of providing an impedance match for an integrated semiconductor circuit to other microwave elements is provided by allowing the selection of one of a plurality of impedance matching ratios between the circuit and other elements. The tunable impedance match comprises a microwave impedance transformer with at least a single primary winding, and a plurality of secondary windings, wherein the winding configuration is determined by an electrical switching apparatus allowing the secondary windings to be connected in series, parallel and combinations thereof to provide the required impedance matching. The method allows for both dynamic matching of an integrated semiconductor circuit for increased efficiency, and hence reduced power consumption, and directly matching said circuit to high impedance antennae etc.
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Le Nhan T
SiGe Semiconductor (Europe) Limited
Townsend and Townsend / and Crew LLP
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