Patent ID: 8027418

Claim:
A diversity reception circuit configured to select one signal from a plurality of input signals as a selected signal having a best signal accuracy and outputting the selected signal, said diversity reception circuit comprising: a first RF circuit configured to receive one of a first input signal modulated by a first modulation mode and a second input signal modulated by a second modulation mode; a first analog-to-digital (A/D) conversion circuit configured to receive one of said first input signal and said second input signal as an output from said first RF circuit; a second RF circuit that is configured to receive one of the first input signal and a third input signal modulated by the second modulation mode; a second A/D conversion circuit configured to receive one of the first input signal as an output from the first RF circuit and said third input signal as an output from said second RF circuit; an adding circuit that adds outputs of said first and second A/D conversion circuits, for output, when said first and second A/D conversion circuits both receive said first input signal; at least one switching circuit; and a mode switching circuit, configured to cause the at least one switching circuit to connect the first RF circuit to both of the first and second A/D conversion circuits in a first switching mode, and configured to cause the at least one switching circuit to connect the second RF circuit to the second A/D conversion circuits in a second switching mode, wherein, in the first switching mode, the first and second RF circuits receive the first input signal modulated by the first modulated mode, and wherein, in the second switching mode, the first RF circuit receives the second input signal modulated by the second modulation mode, and the second RF circuit receives the third input signal modulated by the second modulation mode.