Full-duplex radio frequency echo cancellation

Details Full-duplex radio frequency echo cancellation Full-duplex radio frequency echo cancellation

2003-10-21

2011-12-13

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Transceivers

Loopback mode

Reexamination Certificate

active

08077763

ABSTRACT:
A system comprising a transmitter element creating an interrogation signal and transmitting the interrogation signal and a receiver element receiving a reflection signal of the interrogation signal and combining the reflection signal and a feedback signal to cancel at least a portion of radio frequency echo signals in the reflection signal.

REFERENCES:
patent: 4074086 (1978-02-01), Falconer et al.
patent: 4355214 (1982-10-01), Levy et al.
patent: 6236315 (2001-05-01), Helms et al.
patent: 06260587 (1996-05-01), None
patent: WO0021204 (2000-04-01), None
patent: WO0052838 (2000-09-01), None
EPC Supplementary European Search Report Dated Nov. 5, 2009.
Japanese Office Action Dated Jun. 21, 2010.
Supplementary EPO Search Report dated Nov. 5, 2009.

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