Patent ID: 8265586

Claim:
A low-noise amplification apparatus of a receiver in a wireless communication system, comprising: a main amplifier for amplifying a received signal; a sub-amplifier for amplifying rate of amplification of a third-order harmonic component greater than rate of amplification of a signal component in the received signal and canceling the third-order harmonic component by combining the amplified third-order harmonic component signal with the signal received from the main amplifier; and a noise eliminator for amplifying noise included in the received signal and eliminating the noise by combining the amplified noise with the signal received from the main amplifier or the signal received from the sub-amplifier, wherein the signal component is a fundamental wave component of the received signal, and wherein the main amplifier, the sub-amplifier, and the noise eliminator are selectively activated during reception of the received signal to operate adaptively according to a state of the confirmed radio channel environment and the presence or absence of the neighbor channel interference.