Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Reexamination Certificate
2011-08-30
2011-08-30
Lee, John (Department: 2618)
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
C455S024000, C455S063100, C455S562100
Reexamination Certificate
active
08010042
ABSTRACT:
A repeater and associated method of use includes at least one antenna element for communicating in one direction and at least one antenna element for communicating in another direction. A radio frequency uplink path and a radio frequency downlink path are coupled between the antennas. At least one of the radio frequency uplink path or the radio frequency downlink path includes an adaptive cancellation circuit. The adaptive cancellation circuit is configured to generate a cancellation signal without requiring an injected signal. The cancellation signal, when added to a radio frequency signal in the respective uplink and downlink paths, substantially reduces feedback signals present in the radio frequency signal.
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Alford James L.
Judd Mano D.
Kuiper William P.
Lovinggood Breck W.
Maca Gregory A.
Andrew LLC
Lee John
Wood Herron & Evans LLP
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