Title:
GAIN COMPRESSION COMPENSATION CIRCUIT OF RADIO FREQUENCY POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2021/120728
Kind Code:
A1
Abstract:
Disclosed in the present application is a gain compression compensation circuit of a radio frequency power amplifier. The gain compression compensation circuit comprises: a low-pass filter module configured to receive some radio frequency signals output by a first power amplification transistor, and filter the radio frequency signal having the frequency higher than that of a fundamental wave in said radio frequency signals to obtain filtered signals; and a rectification module configured to receive the filtered signals output by the low-pass filter module and rectify the filtered signals to obtain rectified current, and output the rectified current to a bias transistor and superimpose the rectified current with bias current Ibias flowing in from the bias transistor.
Inventors:
YI JIANGTAO (CN)
SU QIANG (CN)
WEN HUADONG (CN)
SU QIANG (CN)
WEN HUADONG (CN)
Application Number:
PCT/CN2020/115160
Publication Date:
June 24, 2021
Filing Date:
September 14, 2020
Export Citation:
Assignee:
SMARTER MICROELECTRONICS GUANG ZHOU CO LTD (CN)
International Classes:
H03F1/02
Foreign References:
| CN111030605A | 2020-04-17 | |||
| CN107124148A | 2017-09-01 | |||
| CN104362988A | 2015-02-18 | |||
| US20100156536A1 | 2010-06-24 | |||
| US20180175806A1 | 2018-06-21 |
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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