Intermediate frequency receiving circuit and intermediate frequency receiving method

Abstract

An intermediate frequency receiving circuit and an intermediate frequency receiving method are provided. The intermediate frequency receiving circuit includes an inductor-capacitor (LC) resonance circuit whose primary resonance frequency is a central frequency of received signals. The LC resonance circuit receives intermediate frequency signals and suppresses transmitted signals and control signals. A band-pass filter connected to the LC resonance circuit filters the transmitted signals and control signals. An automatic gain control circuit connected to the band-pass filter compensates the attenuation of an intermediate frequency cable. A low-pass filter connected to the automatic gain control circuit compensates an in-band flatness. An analog-to-digital converter connected to the low-pass filter performs a sampling and digital demodulation on the received signals.

Dependencies are inferred from the claim text.