| 摘要 |
A transmitting power level controller of a communication system includes a radio-frequency unit for generating a communication signal and a power amplifier for amplifying the communication signal to generate a transmitting signal. The transmitting power level controller has a temperature sensor, a power detector, and an automatic level controller. The temperature sensor senses temperature of at least one of the RF unit and the PA to generate a detected temperature signal. The power detector detects a transmitting power of the transmitting signal to generate a detected power signal. The automatic level controller is coupled to the temperature sensor and the power detector. The power detector adjusts the transmitting power of the transmit signal according to the detected power signal when a maximal transmitting power is in a predetermined range, and adjusts the transmitting power according to the detected temperature signal otherwise.
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