Title:
LOW-NOISE AMPLIFIER AND RADIO-FREQUENCY CHIP
Document Type and Number:
WIPO Patent Application WO/2024/082820
Kind Code:
A1
Abstract:
The present invention provides a low-noise amplifier and a radio-frequency chip. The low-noise amplifier comprises an input matching network circuit, a first capacitor, a first transistor, a second transistor, an output matching network circuit, an adjustable common-source bias circuit arranged between a gate of the first transistor and the first capacitor, and an adjustable common-gate bias circuit connected to a gate of the second transistor. The adjustable common-source bias circuit is used for controlling the magnitude of an output current according to a preset proportion by using the received current of an external current source by means of a received first control signal, and generating a corresponding first output voltage from the output current. The adjustable common-gate bias circuit is used for enabling the received current of the current source to pass through a plurality of resistors which are connected in series, and then by means of a received second control signal, controlling the number of resistors that the current of the current source passes through, so as to generate a corresponding second output voltage. According to the technical solution of the present invention, the bias of the amplifier can be adjusted, and the process deviation influence is small.
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Inventors:
HU YANGJUN (CN)
GUO JIASHUAI (CN)
GUO JIASHUAI (CN)
Application Number:
PCT/CN2023/115042
Publication Date:
April 25, 2024
Filing Date:
August 25, 2023
Export Citation:
Assignee:
LANSUS TECH INC (CN)
International Classes:
H03F1/26
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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