Leakage signal cancellation apparatus

Details Leakage signal cancellation apparatus Leakage signal cancellation apparatus

2011-03-01

2011-03-01

Phu, Phuong (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S350000, C375S229000, C375S284000, C375S285000, C455S296000, C455S307000, C455S063100, C455S570000, C370S276000, C370S289000

Reexamination Certificate

active

07899142

ABSTRACT:
A quadrature modulator divides a part of a transmitted signal to generate a cancel signal. A signal comparator compares the amplitude and phase of the cancel signal which is generated by the quadrature modulator with those of a received signal, and outputs signals corresponding to the comparison results to the quadrature modulator. The quadrature modulator generates the cancel signal on the basis of the output signals of the signal comparator, and these components perform feedback control such that the cancel signal has the same amplitude as the leakage signal and is in phase with the leakage signal. A combiner combines the cancel signal with an antiphase cancel signal, which is made to be in opposite phase with the cancel signal outputted from the quadrature modulator, to cancel out the leakage signal.

REFERENCES:
patent: 5444864 (1995-08-01), Smith
patent: 7471204 (2008-12-01), Safarian et al.
patent: 7711329 (2010-05-01), Aparin et al.
patent: 2002/0072344 (2002-06-01), Souissi
patent: 10 62518 (1998-03-01), None
patent: 2003 273770 (2003-09-01), None
Beasley et al: “Solving the Problems of a Single Antenna Frequency Modulated CW Radar” IEEE International Radar Conference, p. 391-395, 1990.

Affiliated with

Also associated with

Rating

Leakage signal cancellation apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Leakage signal cancellation apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leakage signal cancellation apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2756650