Patent ID: 7496375
Filing Date: 2009-02-24
Classification: H03G,H04B

Abstract:
1. A transmission power control apparatus comprising: a first variable amplifying circuit that has a first gain resolution and amplifies an input signal; a second variable amplifying circuit that has a second gain resolution higher than the first gain resolution and amplifies an input signal; a transmission power specifier that specifies transmission power to be outputted to a communicating party based on a signal transmitted from the communicating party; a correction value calculator that calculates a correction value to assure the accuracy of the transmission power; a transmission power calculator that calculates transmission power by correcting the specified transmission power by the correction value; and a set value calculator that calculates gain values to be set on the first variable amplifying circuit and the second variable amplifying circuit based on the corrected transmission power calculated by the transmission power calculator, wherein, when a gain value beyond a dynamic range of the second variable amplifying circuit is calculated, the transmission power calculator receives a feedback signal generated by the set value calculator and makes the set value calculator calculate the gain value again.