Patent ID: 6483880
Filing Date: 2002-11-19
Classification: H04B

Abstract:
A system for reducing interference influences on a radio equipment when receiving a radio signal using a receiving channel subjected to interference by harmonics generated in the radio equipment, wherein a first control apparatus is connected to a second control apparatus through a wired transmission line located close to the radio equipment, said system comprising:a control circuit provided in said first control apparatus and processing data based on a clock signal; a wired transmission line receiving angular-modulated data from said first control apparatus and sending the angular-modulated data to said second control apparatus at a reception end of the transmission line; and a modulation-component avoiding part, provided in said second control apparatus and connected to said transmission line at a position preceding said reception end, to avoid a modulation component from said angular-modulated data, received at said preceding position of the transmission line, so as to produce data at said reception end in which said modulation component is avoided; wherein levels of harmonics generated from said angular-modulated data are reducible along the transmission line, wherein said modulation-component avoiding part comprises: a phase shift part shifting clock signal by 180 degrees; and a second modulation part modulating said angular-modulated data received at said preceding position of the transmission line by an output of said phase shift part so as to cancel said modulation component.