Title:
SELF-ADAPTIVE LINEAR BIAS CIRCUIT, RADIO-FREQUENCY POWER AMPLIFIER, AND RADIO FREQUENCY CHIP
Document Type and Number:
WIPO Patent Application WO/2023/088000
Kind Code:
A1
Abstract:
A self-adaptive linear bias circuit (100), comprising a temperature compensation circuit (1), a third power transistor (Q3) and a second resistor (R2), which are connected in sequence. The temperature compensation circuit (1) comprises a first power transistor (Q1), a second power transistor (Q2), a first resistor (R1), a third resistor (R3) and a fourth resistor (R4). The operating current of the self-adaptive linear bias circuit (100) can increase as a power signal increases, such that the linearity of a power amplifier is significantly improved, and the temperature compensation circuit (1) of the self-adaptive linear bias circuit (100) improves the stability of the overall circuit temperature and the control accuracy of a current. Further provided are a radio-frequency power amplifier and a radio frequency chip. Compared with the prior art, the linearity and the control accuracy of the self-adaptive linear bias circuit, the radio-frequency power amplifier and the radio frequency chip are high.
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Inventors:
LI SHULUN (CN)
GUO JIASHUAI (CN)
GUO JIASHUAI (CN)
Application Number:
PCT/CN2022/125442
Publication Date:
May 25, 2023
Filing Date:
October 14, 2022
Export Citation:
Assignee:
LANSUS TECH INC (CN)
International Classes:
H03F1/30; H03F1/32; H03F3/19; H03F3/21
Foreign References:
| CN216437157U | 2022-05-03 | |||
| CN101079598A | 2007-11-28 | |||
| CN101394152A | 2009-03-25 | |||
| CN111200408A | 2020-05-26 | |||
| CN113271069A | 2021-08-17 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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