RADIO CIRCUIT EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a radio circuit equipment which can easily reduce an unnecessary frequency component at the time of transmission and which can be miniaturized. SOLUTION: At the time of transmission, the output signal of a first local oscillator 102 is inputted to a transmission frequency converter 112 and is inputted to a frequency divider 104. The output signal of the frequency divider 104 is inputted to a modulator 111. The modulator 111 modulates the output signal of the frequency divider 104 with a base band signal. The output signal of the modulator 111 is inputted to the transmission frequency converter 112 and is converted into the frequency of a transmission signal with the output signal of the first local oscillator 102. At the time of reception, the output signal of a low noise amplifier 121 is inputted to a first frequency converter 122 and is converted into a first intermediate frequency with the output signal of the first local oscillator 102. The output signal of a filter 123 is inputted to a second frequency conversion circuit 124 and is converted into a second intermediate frequency with the output signal of a second local oscillator 103.