Patent ID: 8295796

Claim:
A high frequency circuit, comprising: an amplifier part that includes a plurality of amplifier circuits amplifying a high frequency signal and connected in parallel, that synthesizes outputs of the amplifier circuit and that supplies the outputs to an antenna; a controller that outputs a low power signal during a low power mode in which the amplifier part operates at low power; and an operation suppressing circuit that disables one of the plurality of amplifier circuits based on the low power signal, wherein the amplifier circuits amplify the high frequency signal at a gain that is set by a gain control voltage, and the controller generates a power control voltage that controls the outputs of the amplifier circuits, the high frequency circuit further comprising: a voltage dividing circuit that divides the power control voltage by a predetermined voltage ratio; a gain control voltage generation circuit that generates the gain control voltage by correlating with the divided power control voltage; and a voltage ratio changing circuit that is connected to the voltage dividing circuit and that decreases the voltage ratio of the voltage dividing circuit by the low power signal output from the controller.