Title:
POWER SUPPLY FOR RADIO-FREQUENCY POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2020/238898
Kind Code:
A1
Abstract:
A power supply for a radio-frequency power amplifier, comprising: first and second linear circuits used for respectively performing linear amplification on a low-power signal and a high-power signal in a first envelope signal and respectively providing a first voltage and a second voltage for the radio-frequency power amplifier, wherein the low-power signal is a signal of which the power ratio in the envelope signal is less than or equal to 30%, and the high-power signal except the low-power signal is a signal of which the power ratio in the envelope signal is greater than or equal to 70%; and a third circuit used for sensing the linearly amplified high-power signal and working in a constant-on-time (COT) control mode with COT or a constant off-time control mode with constant off-time so as to provide a third current for the radio-frequency power amplifier according to the sensed linearly amplified high-power signal. According to the present invention, linear processing can be performed on the low-power signal and the high-power signal respectively, and COT control is combined, so that the efficiency of the power supply is improved.
Inventors:
XIA QIN (CN)
Application Number:
PCT/CN2020/092347
Publication Date:
December 03, 2020
Filing Date:
May 26, 2020
Export Citation:
Assignee:
SHAANXI REACTOR MICROELECTRONICS CO LTD (CN)
International Classes:
H03F1/02
Foreign References:
| CN109768778A | 2019-05-17 | |||
| CN108900165A | 2018-11-27 | |||
| CN108768307A | 2018-11-06 | |||
| CN109768773A | 2019-05-17 | |||
| CN110365296A | 2019-10-22 | |||
| CN210111952U | 2020-02-21 | |||
| US6573793B1 | 2003-06-03 |
Attorney, Agent or Firm:
BEIJING RAINBOW XINGYUAN INTELLECTUAL PROPERTY LAW FIRM (CN)
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