Title:
MULTI-BAND GAIN-ADJUSTABLE LOW NOISE AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2024/066713
Kind Code:
A1
Abstract:
Disclosed in embodiments of the present invention is a multi-band gain-adjustable low noise amplifier, comprising a signal input end, an input matching network, a plurality of common-source amplification units, a negative gain attenuation network, a source negative feedback unit, a common-gate driving amplification unit, a choke inductor unit, an impedance-adjustable output matching network, an output resistance attenuation network, and a signal output end. By means of a first control signal, one or more common-source amplification units can be selectively controlled to amplify a signal, so that gain adjustment can be achieved, thereby satisfying the requirement of a large dynamic range; moreover, whether a first choke inductor is connected to a circuit is controlled by controlling the on or off of a first P-type transistor and a second P-type transistor in the choke inductor unit, so that the adjustment of a working frequency band can be achieved; in addition, by means of further cooperation between the choke inductor unit and the impedance-adjustable output matching network, the adjustment of a wider frequency band can be achieved, and the occupied area can be reduced.
Inventors:
SU JUNHUA (CN)
GUO JIASHUAI (CN)
GUO JIASHUAI (CN)
Application Number:
PCT/CN2023/109886
Publication Date:
April 04, 2024
Filing Date:
July 28, 2023
Export Citation:
Assignee:
LANSUS TECH INC (CN)
International Classes:
H03F1/02
Foreign References:
| CN115296620A | 2022-11-04 | |||
| CN109845098A | 2019-06-04 | |||
| CN109891742A | 2019-06-14 | |||
| CN105141263A | 2015-12-09 | |||
| US9847765B1 | 2017-12-19 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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