RF RECEIVING APPARATUS AND CHANNEL CHANGING METHOD USING THE APPARATUS

摘要

Disclosed is an RF receiving apparatus. The RF receiving apparatus comprises: a mixer down-converting an input signal using a local oscillator, and outputting an intermediate frequency signal; a PGA amplifying an input intermediate frequency signal; an analog-to-digital converter converting an analog signal output by the PGA to a digital signal; and a signal processing unit digitizing and outputting the intermediate frequency signal output by the analog-to-digital converter. When a channel is switched, two channels are locked using the PLL of the local oscillator at one time, and the signal processing unit respectively divides the two channels input at one time. As such, a channel switching time is able to be reduced.