Patent ID: 7583149
Filing Date: 2009-09-01
Classification: H03F,H03G

Abstract:
1. A power supply apparatus which supplies power to an amplifier, comprising: a regulator to stabilize a voltage of the power supplied to the amplifier, the regulator including a switching regulator to stabilize the voltage by turning ON/OFF the power based on a predetermined pulse signal; and a stability controller to obtain an amplitude level of an input signal inputted to the amplifier, and control a stability of the voltage by said regulator based on the amplitude level, the stability controller including: an amplitude obtaining unit to obtain amplitude value information from the input signal of the amplifier; a conversion table to store the amplitude value information and frequency information of the pulse signal corresponding to the amplitude value information; and a control variable generator to read the corresponding frequency information from the conversion table based on the amplitude value information obtained by the amplitude obtaining unit, and to control the frequency of the pulse signal based on the read frequency information.