Title:
BIAS CIRCUIT OF POWER AMPLIFIER, AND APPARATUS AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/170816
Kind Code:
A1
Abstract:
Disclosed are a bias circuit of a power amplifier, and an apparatus and a device. The circuit comprises a first-part circuit, a second-part circuit and a power source, wherein the power source is connected to a power source end of the first-part circuit; two ends of the first-part circuit are connected to two ends of the second-part circuit in parallel, and one end following parallel connection is connected to a gate electrode of a first transistor of the power amplifier; the gate electrode of the first transistor is provided with a first bias voltage and a second bias voltage by the first-part circuit and the second-part circuit respectively, the voltages are superposed, and then a stable bias voltage is provided; and the impedance of the bias circuit is within a preset impedance range. Therefore, a power amplifier is provided with a first bias voltage by a first-part circuit, the power amplifier is provided with a second bias voltage by a second-part circuit, and the second bias voltage can be used to adjust the first bias voltage, so as to provide the power amplifier with a stable bias voltage; and the impedance of a bias circuit is within a preset impedance range, thereby ensuring the linearity performance of the power amplifier, and reducing the memory effect of the power amplifier.
Inventors:
PENG ZHENFEI (CN)
SU QIANG (CN)
NI XUWEN (CN)
SU QIANG (CN)
NI XUWEN (CN)
Application Number:
PCT/CN2021/132876
Publication Date:
August 18, 2022
Filing Date:
November 24, 2021
Export Citation:
Assignee:
SMARTER MICROELECTRONICS GUANG ZHOU CO LTD (CN)
International Classes:
H03F3/20; H03F1/30
Foreign References:
| CN112994629A | 2021-06-18 | |||
| CN104426486A | 2015-03-18 | |||
| US20010054933A1 | 2001-12-27 | |||
| US6486739B1 | 2002-11-26 | |||
| NL7513266A | 1976-05-14 |
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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