Title:
BIDIRECTIONAL CURRENT SELF-ADAPTIVE POWER AMPLIFIER BIAS CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2019/019359
Kind Code:
A1
Abstract:
A bidirectional current self-adaptive power amplifier bias circuit, comprising: an operational amplifier, a forward regulation circuit, an inverted regulation circuit and a feedback circuit, wherein when the current of the bidirectional current self-adaptive power amplifier bias circuit is not inverted, the forward regulation circuit is conducted, and at this time, the current is absorbed by means of a negative power source connected to the forward regulation circuit and passes through the feedback circuit, so that the voltage at an output end (2) of the bidirectional current self-adaptive power amplifier bias circuit is kept stable; and when the current of the bidirectional current self-adaptive power amplifier bias circuit is inverted, the inverted regulation circuit is conducted, and at this time, the current is released by means of a ground end connected to the inverted regulation circuit and passes through the feedback circuit, so that the voltage at the output end (2) of the bidirectional current self-adaptive power amplifier bias circuit is kept stable. The present invention can maintain voltage stability where a gate current of a high-power amplifier tube is inverted, and is suitable for the problem of the gate current of the high-power amplifier tube being inverted.
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Inventors:
SUN YI (CN)
Application Number:
PCT/CN2017/104249
Publication Date:
January 31, 2019
Filing Date:
September 29, 2017
Export Citation:
Assignee:
LINKSATCOM TECH CO LTD (CN)
International Classes:
H03F1/34
Foreign References:
| CN204836095U | 2015-12-02 | |||
| CN1918784A | 2007-02-21 | |||
| US20040004507A1 | 2004-01-08 | |||
| CN101387894A | 2009-03-18 | |||
| CN1318899A | 2001-10-24 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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