Cosite interference rejection system using an optical approach

Details Cosite interference rejection system using an optical approach Cosite interference rejection system using an optical approach

2007-06-12

2007-06-12

Phan, Hanh (Department: 2613)

Optical communications

Optical transceiver

C398S137000, C398S139000, C398S115000, C398S140000, C398S182000, C398S183000, C398S188000, C398S192000, C398S194000, C398S195000, C398S202000, C398S208000, C398S209000, C455S296000, C455S063300, C455S166200, C455S082000, C455S083000, C455S303000, C455S304000, C455S206000, C342S381000, C342S382000, C342S383000, C342S384000, C375S211000, C375S222000, C375S140000, C375S213000

Reexamination Certificate

active

11208941

ABSTRACT:
A cosite interference rejection system allows cancellation of large interfering signals with an optical cancellation subsystem. The rejection system includes an interference subsystem coupled to a transmit system, where the interference subsystem weights a sampled transmit signal based on a feedback signal such that the weighted signal is out of phase with the sampled transmit signal. The optical cancellation subsystem is coupled to the interference subsystem and a receive antenna. The optical cancellation subsystem converts an optical signal into a desired receive signal based on an interfering coupled signal and the weighted signal. The weighted signal is therefore used to drive the optical cancellation subsystem. The rejection system further includes a feedback loop for providing the feedback signal to the interference subsystem based on the desired receive signal.

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patent: 6731881 (2004-05-01), Nomura
patent: 6934476 (2005-08-01), LaGasse

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