Patent ID: 6724840
Filing Date: 2004-04-20
Classification: H04B

Abstract:
A method of canceling an undesired signal from an input signal, the method comprising the steps of,receiving the input signal, scanning the input signal over a frequency operating bandwidth, detecting the presence of a detected signal having frequency components within the frequency operating bandwidth, determining when the detected signal is the undesired signal, determining when the detected signal is a pulse signal, determining when the detected signal is a continues wave signal, determining when the detected signal is the undesirable signal when the pulse signal has a duration greater than a preset value, determining when the detected signal is the undesirable signal when the continuous wave signal has the detected center frequency and the detected bandwidth respectively different than a predetermined desired center frequency and a predetermined desired bandwidth, isolating the detected signal within a frequency bandwidth as an isolated undesired signal, and subtracting the isolated undesired signal from the input signal.