Patent ID: 9577592
Date: 2017-02-21
CPC Classifications: H03F

Claim:
1. A method for controlling a power amplifier configured to use nonlinearity correction in a nearly steady operation status of non-linearity correction, in a periodical fast switching system in a time domain that defines downlink time slots, the method comprising: receiving a periodic switch signal indicating a switch time of the periodical fast switching system; and providing, based on the periodic switch signal, a pre-bias signal with a pre-determined voltage amplitude to the power amplifier for a pre-determined time period before each downlink time slot, to preheat a transistor of the power amplifier and thereby compensate a temperature change of a die inside the transistor, wherein the pre-determined time period and the predetermined voltage amplitude of the pre-bias signal are determined such that a temperature of the transistor at beginning of each downlink time slot is substantially equal to that in a steady status of the downlink time slot.