RECEIVED GAIN BY-PASSING DEVICE OF LOW NOISE AMPLIFIER

摘要

PURPOSE: A received gain by-passing device of a low noise amplifier is provided to stabilize a system as well as reduce a production cost. CONSTITUTION: A received gain by-passing device of a low noise amplifier includes a microcomputer(100) which recognizes a gain of radio frequency(RF) signal received through an antenna(1000), and outputs a corresponding digital pulse signal. A gain controlling section(200) outputs a gain control signal to control a low noise amplification degree by receiving the pulse signal outputted from the microcomputer(100). A low noise amplifier(300) amplifying the RF signal received through the antenna(1000) by the signal transmitted from the gain controlling section(200). The device can stabilize the system by low amplifying or by-passing the received signal, reduce the production cost to manufacture, and control the amplifying level at a user's disposal.