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Three-path reverse Doherty power amplifier and implementation method

A technology of power amplifier and power amplification, which is applied in the direction of power amplifiers, amplifiers, improved amplifiers to improve efficiency, etc., to achieve the effects of reducing differential loss, reducing size, and optimizing broadband performance

Inactive Publication Date: 2015-09-16
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a three-way inverse Doherty power amplifier and its implementation method, which can better solve the problem of maintaining high efficiency for signals with a large peak-to-average ratio in a large dynamic range.

Method used

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  • Three-path reverse Doherty power amplifier and implementation method
  • Three-path reverse Doherty power amplifier and implementation method
  • Three-path reverse Doherty power amplifier and implementation method

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Embodiment Construction

[0041] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0042] figure 1 It is a block diagram of the realization method of the three-way inversion Doherty power amplifier provided by the invention, as figure 1 As shown, the steps include:

[0043] Step 1: Perform power amplification on the signal input to the main channel to obtain the main channel power amplified signal.

[0044] Further, when the power of the signal input to the main circuit is greater than the power threshold of the main circuit, power amplification is performed on the signal input to the main circuit. Wherein, the power threshold of the main circuit can be determined through circuit debugging.

[0045] Step 2: Power amplifying the signa...

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Abstract

Disclosed are a three-circuit inverted Doherty power amplifier and an implementation method, which relate to the technical field of communications. The method comprises: amplifying the power of a signal input to a main circuit, to obtain a power amplified signal of the main circuit; amplifying the power of a signal input to a first auxiliary circuit, to obtain a power amplified signal of the first auxiliary circuit; amplifying the power of a signal input to a second auxiliary circuit, to obtain a power amplified signal of the second auxiliary circuit; subjecting the power amplified signal of the first auxiliary circuit and the power amplified signal of the second auxiliary circuit to phase compensation respectively and then combining the power amplified signal of the first auxiliary circuit and the power amplified signal of the second auxiliary circuit with the power amplified signal of the main circuit, and outputting the resultant signal. The power amplifier and the implementation method mentioned above can meet the requirement of new generation of communication systems for signals with large peak-to-average ratios, and simultaneously can also ensure a higher efficiency under the requirement for large peak-to-average ratios.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a three-way inversion Doherty power amplifier and its realization method. Background technique [0002] Using Doherty power amplifier technology can significantly improve the efficiency of the power amplifier, which has been widely used in current wireless communication base stations. It is mainly composed of 2 or more power amplifier tubes, which are divided into main power amplifier tubes and auxiliary power amplifier tubes. The main power amplifier tube and the auxiliary power amplifier tube work in different working states, and the efficiency is improved through impedance modulation technology. There is usually an impedance transformation line at the combined output of the power amplifier tube to achieve impedance modulation and matching. [0003] With the adoption of some signals with a large peak-to-average ratio in modern communications, coupled with the requiremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/07H03F3/20
CPCH03F1/0288H03F3/245H03F3/602H03F2200/408
Inventor 韩辉黎家璐
Owner ZTE CORP
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