Patent ID: 6539202
Filing Date: 2003-03-25
Classification: H04B

Abstract:
An interference canceling device for canceling interference contained in a signal on a main line by recombining the signal on the main line with a cancellation signal, comprising:main line signal branching means for branching part of a signal on the main line; a canceling circuit for generating a cancellation signal from a signal which has been branched from the signal on the main line; and main line signal recombining means for recombining the signal on the main line with the cancellation signal; said interference canceling device further comprising a narrow band BPF provided within said canceling circuit, said narrow band BPF representing substantially flat phase characteristics in a specific frequency band having a certain width; wherein said cancellation signal is generated by filtering the signal which has been branched from the signal on the main line by said narrow band BPF.