DIGITAL CHANNEL SELECTING DEVICE AND ITS METHOD

摘要

a heterodyne oscillator(13) for supplying heterodyne oscillator signal to a mixer stage(3); a divider(14) for dividing the heterodyne oscillator signal; a counter(15) for counting the signal output from the divider(14); a controller(16) for converting the output value received from the counter into a frequency and outputting correction data based on the frequency value; and a D/A converter(17) for converting the digital data supplied from the controller(16) into a oscillation control voltage for the heterodyne oscillator(13) and applying the voltage to the heterodyne oscillator(13).