Low-noise amplification module, receiver and signal processing method

Abstract

The invention discloses a low-noise amplification module, and the low-noise amplification module comprises a radio frequency signal input end which is used for receiving an externally input radio frequency signal, a radio frequency signal output end which is used for outputting an amplified or attenuated radio frequency signal, a first control signal input end which is used for receiving a first control signal, and a second control signal input end which is used for receiving a second control signal. The low-noise amplification module further comprises a low-noise amplifier and a bypass circuit. The low noise amplifier amplifies the radio frequency signal to obtain an amplified radio frequency signal; the bypass circuit attenuates the radio frequency signal to obtain an attenuated radio frequency signal; the conduction states of the low noise amplifier and the bypass circuit are respectively adjusted according to the first control signal and the second control signal, and the attenuation amount of the attenuation is adjusted according to the voltage of the second control signal. The invention further discloses a receiver and a signal processing method, the attenuation of the inputsignal can be adjusted, and the communication quality can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a low-noise amplification module, a receiver and a signal processing method. Background technique [0002] With the rapid development of electronic technology, communication devices such as mobile phones and routers have been widely used in many fields of national life and science and technology, and low-noise amplifier modules are indispensable components in communication devices. In the communication device, the low noise amplifier module is used to amplify weak radio frequency signals, but if the strength of the radio frequency signal received by the low noise amplifier module is too large, it will cause distortion of the amplifier, resulting in a decrease in the signal processing quality of the communication device. Therefore, in the low-noise amplification module of the communication device, it is extremely important to attenuate strong signals. [0003] At present, i...

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Problems solved by technology

[0005] In the process of implementing the embodiment of the present invention, the inventor found that in the prior art, the use of radio frequency switches to control the signal transmission link will lead to an increase in the noise figure of the system, and when different strong signal inputs are attenuated, due to The attenuation is a fixed value, so it will still cause packet loss at the switching point of strong and weak signals. Thirdly, due to the fixed attenuation of the existing scheme, when the signal strength continues to increase to a certain strength, it will still cause signal distortion at the receiver and affect communication. quality

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