Apparatus and method of controlling a low noise amplifier of a receiver

摘要

An apparatus and a method of controlling a low noise amplifier of a receiver, in which the activation of the low noise amplifier is automatically controlled using an automatic gain control current for a received signal. The apparatus may include a low noise amplifier, an automatic gain control current detector, a switch, and a controller. The low noise amplifier amplifies a noise-free received signal. The automatic gain control current detector detects an automatic gain control current based on the level of a signal output from the low noise amplifier. The switch controls the activation of the low noise amplifier. The controller controls the operation of the switch according to the automatic gain control current detected by the automatic gain control current detector.