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Amplitude and phase control equipment and control method for power amplifier

A power amplifier, amplitude and phase control technology, applied in the direction of power amplifier, amplification control, gain control, etc.

Inactive Publication Date: 2012-03-21
WUHAN BINHU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this type of amplifier, the realization of amplitude and phase control is limited by the device level, especially the attenuator is limited by the power level, so it can only be realized in low-power nonlinear amplifiers.

Method used

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  • Amplitude and phase control equipment and control method for power amplifier
  • Amplitude and phase control equipment and control method for power amplifier
  • Amplitude and phase control equipment and control method for power amplifier

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] image 3 It is a schematic block diagram of the realization circuit of the present invention. In the figure, the signal input to the power divider is divided into two signals, which are output to the power amplifier after being phase-shifted by the phase shifter, and then output to the synthesizer through the isolator after being amplified by the amplifier. The two phase-shifted and amplified signals are synthesized in the synthesizer and then output. The role of the load is to absorb the unbalanced synthesized power of the synthesizer. The phase shifting of the phase shifter is controlled by a phase controller.

[0018] The port phase of the power splitter and the synthesizer has a great influence on the amplitude and phase control, so the phase requirements of the power splitter and the synthesizer are generally strict, and the indicators ar...

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PUM

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Abstract

The invention relates to amplitude and phase control equipment and an amplitude and phase control method for a power amplifier. The phase and amplitude of the amplifier are randomly regulated by adopting the symmetric phase control of a pair of synthesis branches in the amplifier, so that the limitations of the power handing level of an attenuator to the overall attenuator for the amplitude and phase control of the power amplifier are broken. By the technology, the problems of limitations of the power handing level of the attenuator to the attenuator in the amplitude and phase control of the power amplifier, particularly a nonlinear power amplifier are solved, and the amplitude and phase of any type of amplifier with any high-power output can be controlled.

Description

technical field [0001] The invention relates to a power amplifier amplitude phase control device and a control method, and its application fields are communication products and radars. Background technique [0002] The general amplitude and phase control technology is implemented in linear or near-linear amplifiers such as Class A and Class AB. The circuit principle block diagram is as follows: figure 1 As shown, its amplitude and phase control are carried out with small signals in front of the amplifier, but the efficiency of this type of amplifier is very low. [0003] The amplitude and phase control of nonlinear high-efficiency amplifiers such as class C and class D, the circuit principle frame is as follows figure 2 shown. Generally, the phase is controlled at the small signal at the front stage, and the amplitude is controlled at the rear stage of the amplifier output. The implementation of amplitude and phase control in this type of amplifier is limited by the devi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03G3/20H03F3/20
Inventor 李宏斌沈小川
Owner WUHAN BINHU ELECTRONICS
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