Patent ID: 7398075

Claim:
A radio wave reception device comprising: a radio wave reception unit which is capable of receiving arbitrary radio wave signals having different frequencies, and which converts a received arbitrary radio wave signal into an electric signal and outputs the electric signal; an oscillation unit which includes a frequency determining section which determines a frequency f 0 in accordance with an equation: (| f 1 ±fi|/p 1)= . . . =(| fn±fi|/pn )= f 0 where p 1 , . . . , pn are positive integers and n is an integer equal to or greater than 2, and wherein the equation defines a relationship between the respective frequencies f 1 , . . . , fn of the arbitrary radio wave signals receivable by the radio wave reception unit and an intermediate frequency fi, and wherein the oscillation unit outputs a signal having the frequency f 0 ; a multiplying unit which multiplies the signal having the frequency f 0 output from the oscillation unit; a frequency conversion unit which synthesizes the electric signal output from the radio wave reception unit with the signal output from the multiplying unit, and outputs a signal having the intermediate frequency fi which has a fixed value that is the same for all of the arbitrary radio wave signals receivable by the radio wave reception unit; and a detection unit which demodulates the signal having the intermediate frequency fi output from the frequency conversion unit.