Apparatus and method for low-noise amplification in a wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsHee-Hyun Lee, Hoon-Tae Kim
Life of this patent
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Abstract
A low-noise amplification apparatus and method in a receiver in a wireless communication system are provided, in which a main amplifier amplifies a received signal, a sub-amplifier amplifies a third-order harmonic component more strongly than a signal component in the received signal and cancels the third-order harmonic component by combining the amplified signal with the signal received from the main amplifier. A noise eliminator amplifies noise included in the received signal and eliminates the noise by combining the amplified noise with the signal received from the main amplifier or the signal received from the sub-amplifier.
Claims21
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.
A method for operating a Low-Noise Amplifier (LNA) in a receiver in a wireless communication system, comprising:
- confirming a radio channel environment;
- confirming whether there is a neighbor channel interference;
- and
- amplifying a received signal by selectively activating a main amplifier, a sub-amplifier, and a noise eliminator 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;
- wherein the main amplifier amplifies a received signal,
- wherein the sub-amplifier amplifies a rate of amplification of a third-order harmonic component greater than the 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
- wherein the noise eliminator amplifies 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.
Dependencies are inferred from the claim text.