Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
Reexamination Certificate
2009-02-03
2011-10-11
Zweizig, Jeffrey (Department: 2816)
Telecommunications
Transmitter and receiver at same station
With transmitter-receiver switching or interaction prevention
Reexamination Certificate
active
08036606
ABSTRACT:
An interference canceller between a transmit chain and a receive chain of a transceiver is proposed to complement the action of a diplexer, or duplex filter, that is part of the transceiver. The interference canceller comprises a transmit chain tap, a receive chain coupler for coupling an interference compensation signal into the receive chain, and an interference signal processing path between the transmit chain tap and the receive chain coupler. The interference signal processing path comprises a filter having filtering characteristics similar or corresponding to the filtering characteristic of a receive portion of said diplexer. A corresponding method for interference cancellation is also proposed. Computer-program products for the manufacture of the interference canceller and the execution of the method are also proposed.
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Dann Dorfman Herrell & Skillman
Eland Stephen H.
Ubidyne, Inc.
Zweizig Jeffrey
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