Patent ID: 7317894

Claim:
A satellite digital radio broadcast receiver having an integrated circuit including a first reception series for performing a reception processing of a satellite wave signal from a satellite and a second reception series for performing a reception processing of a ground wave signal from a repeater in order to receive both the satellite wave signal and the ground wave signal having the same broadcast contents and different modulation methods, a total gain through the first reception series being different from a total gain through the second reception series, the satellite digital radio broadcast receiver comprising: automatic gain control means for amplifying a signal from a single antenna at a variable gain amplifier, and in accordance with a level of a signal outputted from the variable gain amplifier, for controlling a gain of the variable gain amplifier to control the level of the signal outputted from the variable gain amplifier; and a two-way distributor for distributing an output of the automatic gain control means to two distribution outputs, wherein one of the two distribution outputs from the two-way distributor is supplied to said integrated circuit as an input signal to the first reception series, and the other of the two distribution outputs from the two-way distributor is supplied to the integrated circuit as an input signal to the second reception series, and wherein the two-way distributor operates to distribute an input at a distribution ratio according to the difference between the total gain through the first reception series and the total gain through the second reception series.