Phase compensation circuit module, power amplifier component, compensation method and equipment
A circuit module and phase compensation technology, applied in the electronic field, can solve the problems of affecting linearity, nonlinear enhancement of transistors, poor adjustable performance, etc., and achieve the effect of improving stability
Active Publication Date: 2021-11-23
GUANGZHOU HUIZHI MICROELECTRONICS
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Problems solved by technology
[0002] For existing power amplifiers, amplitude modulation versus phase modulation (AM-PM) can represent the linearity index of the power amplifier; AM-PM distortion refers to the difference between the input and output signals caused by the change of the signal amplitude after the input signal enters the power amplifier. Due to the nonlinearity of the amplifier itself, with the increase of the input signal, the nonlinearity of the transistor will be enhanced, and the AM-PM will further deteriorate, which will affect the overall linearity
[0003] The existing AM-PM compensation circuit or equipment is a phase mutual compensation circuit using two-stage amplifier transistors, but the overall adjustable performance is poor, and it is difficult to deal with complex AM-PM changes.
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example 1
[0182] Example 1: A compensation circuit module, the compensation circuit module is the compensation circuit of the radio frequency power amplifier AM-PM based on Cgate.
[0183] In modern mobile communication systems, various performance indicators of RF front-end power amplifiers, such as power, efficiency, and linearity, have an important impact on the entire system. The continuous improvement of the transmission rate requirements of the communication system has brought about the complexity of the signal modulation method, which further puts forward higher requirements for the linearity index of the power amplifier. In a system without memory effect, the linearity index of the power amplifier can be characterized by amplitude modulation to amplitude modulation distortion (AM-AM) and amplitude modulation to phase modulation distortion (AM-PM) of the power amplifier. Compared with AM-AM distortion, AM-PM distortion mainly refers to the change of the phase difference between t...
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The disclosure provides a phase compensation circuit module, a power amplification component, a compensation method and equipment; the phase compensation circuit module at least includes: a variable resistor, a detection component, and a control component; the detection terminal of the detection component and the signal input of the power amplifier terminal connection, used to detect the input signal of the signal input terminal; the control component is connected to the detection component, and is used to output the control signal according to the input signal detected by the detection component; the variable resistor is connected to the output terminal of the control component, and is used to change the connection according to the control signal The variable resistor forms the circuit of the power amplifier and is used to form the on-resistance of the transistor of the power amplifier; among them, the on-resistance of the transistor is used when the phase of the output signal of the power amplifier changes. Changes; the compensation for amplitude modulation and phase modulation is realized, and the linearity is improved.
Description
technical field [0001] The present disclosure relates to the field of electronic technology, in particular to a phase compensation circuit module, a power amplification component, a compensation method and equipment. Background technique [0002] For existing power amplifiers, amplitude modulation versus phase modulation (AM-PM) can represent the linearity index of the power amplifier; AM-PM distortion refers to the difference between the input and output signals caused by the change of the signal amplitude after the input signal enters the power amplifier. Due to the nonlinearity of the amplifier itself, with the increase of the input signal, the nonlinearity of the transistor is enhanced, and the AM-PM will further deteriorate, which will affect the overall linearity. [0003] The existing AM-PM compensation circuit or equipment is a phase mutual compensation circuit using two-stage amplifying transistors. However, the overall adjustable performance is poor, and it is diff...
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IPC IPC(8): H03F1/32H03F3/213H03F3/195
CPCH03F1/32H03F3/213H03F3/195H03F2200/451H03F1/223H03F1/565H03F3/21H03F2200/222
Inventor 苏强彭振飞徐柏鸣
Owner GUANGZHOU HUIZHI MICROELECTRONICS