Title:
POWER AMPLIFIER AND RADIO FREQUENCY CHIP
Document Type and Number:
WIPO Patent Application WO/2023/078058
Kind Code:
A1
Abstract:
The present invention provides a power amplifier, comprising a third capacitor, a first transistor, a first-stage matching circuit, a second transistor, a second-stage matching circuit, a third transistor, an output matching circuit, a first-stage series feedback network circuit bridged between the base of the first transistor and the ground, and a second-stage series feedback network circuit bridged between the base of the second transistor and the ground. The first-stage series feedback network circuit is used for adjusting the circuit equivalent capacitance value of the first-stage series feedback network circuit according to a first control voltage, so as to adjust the gain of the first transistor. The second-stage series feedback network circuit is used for adjusting the circuit equivalent capacitance value of the second-stage series feedback network circuit according to a second control voltage, so as to adjust the gain of the second transistor. The present invention also provides a radio frequency chip. By using the technical solution of the present invention, the gain of the power amplifier can be linearly and continuously adjusted, and the effect of restraining low frequency and high frequency outside the working frequency band is good.
Inventors:
ZHOU JIAHUI (CN)
GUO JIASHUAI (CN)
GUO JIASHUAI (CN)
Application Number:
PCT/CN2022/125273
Publication Date:
May 11, 2023
Filing Date:
October 14, 2022
Export Citation:
Assignee:
LANSUS TECH INC (CN)
International Classes:
H03F1/34; H03F3/19; H03F3/21; H03G3/30
Foreign References:
| CN114094953A | 2022-02-25 | |||
| CN103457550A | 2013-12-18 | |||
| CN112543005A | 2021-03-23 | |||
| CN106169915A | 2016-11-30 | |||
| JP2015207977A | 2015-11-19 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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