Patent ID: 6122496
Filing Date: 2000-09-19
Classification: H03H,H03J

Abstract:
A receiver comprising:a radio section for amplifying a received signal to thereby output an amplified signal;a filter for inputting the amplified signal and having a preselected frequency characteristic;feeding means for feeding a first control signal to said filter;first outputting means for outputting a second control signal corresponding to the frequency of said amplified signal;second outputting means for outputting a third control signal corresponding to a difference between said second control signal and preselected reference value;control means for controlling the preselected frequency characteristic of said filter in accordance with said first control signal and said third control signal;wherein the first control signal, the second control signal and the third control signal, comprise a control current, a DC voltage, and an error current, respectively; andwherein said second outputting means converts a difference between a center voltage of said DC voltage and the preselected reference voltage to said error current.