Title:
COMPENSATION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2022/217946
Kind Code:
A1
Abstract:
An embodiment of the present disclosure provides a compensation circuit, comprising: a power amplifier, a current bias circuit, a power detection circuit and a current control circuit. The power detection circuit is connected to the power amplifier, and is configured to detect the voltage amplitude of a radio-frequency input signal of the power amplifier and output a reference current when the voltage amplitude meets a preset condition. The current control circuit is separately connected to the power detection circuit and the current bias circuit, and is configured to receive a reference current outputted by the power detection circuit and output a compensation current to the current bias circuit on the basis of the reference current. The current bias circuit is separately connected to the current control circuit and the power amplifier, and is configured to receive the compensation current outputted by the current control circuit, generate a direct-current bias current, and output the compensation current and the direct-current bias current to the power amplifier. The power amplifier is connected to the current bias circuit, and is configured to receive the compensation current and the direct-current bias current, and amplify the power of the radio-frequency input signal on the basis of the compensation current and the direct-current bias current.
Inventors:
PENG ZHENFEI (CN)
SU QIANG (CN)
SU QIANG (CN)
Application Number:
PCT/CN2021/136094
Publication Date:
October 20, 2022
Filing Date:
December 07, 2021
Export Citation:
Assignee:
SMARTER MICROELECTRONICS GUANG ZHOU CO LTD (CN)
International Classes:
H03F3/24; H03F1/32
Foreign References:
| CN112803905A | 2021-05-14 | |||
| US20020171483A1 | 2002-11-21 | |||
| CN109428553A | 2019-03-05 | |||
| CN110690863A | 2020-01-14 | |||
| CN112543005A | 2021-03-23 | |||
| US20060057980A1 | 2006-03-16 |
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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