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Doherty power amplifier and electronic device

A technology for power amplifiers and main amplifiers, which is applied to amplifiers, components of amplifying devices, and improved amplifiers to improve efficiency. It can solve problems such as linearity and efficiency contradictions, achieve efficiency and linearity relief, and optimize nonlinear distortion. Effect

Pending Publication Date: 2022-04-22
KUNSHAN HUATAI ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, the contradiction between linearity and efficiency is a defect that the traditional two-way asymmetric Doherty amplifier cannot overcome.

Method used

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  • Doherty power amplifier and electronic device
  • Doherty power amplifier and electronic device
  • Doherty power amplifier and electronic device

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Embodiment Construction

[0054] The present invention will be more fully understood from the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a teaching to one skilled in the art that, in fact, any suitably detailed embodiment may differ in any suitably detailed embodiment. The manner employs the representative basis of the present invention.

[0055] A Doherty power amplifier disclosed by the present invention is used to improve the load pull of the main circuit amplifier in the Doherty power amplifier by additionally introducing a linear peak amplifier and a combined circuit combiner on the original convent...

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Abstract

The invention discloses a Doherty power amplifier and an electronic device. The amplifier comprises a power divider, a main amplifier, an efficiency peak amplifier, a linear peak amplifier, a two-stage combiner, an output matching network and a phase shift network, and the main amplifier, the efficiency peak amplifier and the linear peak amplifier are respectively connected with three output ends of the power divider. One stage of combiner in the two stages of combiners is connected with the main amplifier and the efficiency peak value amplifier, the other stage of combiner is connected with the efficiency peak value amplifier and the linear peak value amplifier, the output matching network is connected with a combining point of the amplifiers, and the phase shift network is arranged between the peak value amplifier and the power amplifier. According to the Doherty amplifier, the linearity superior to that of a conventional two-path asymmetric Doherty amplifier is provided on the premise that the efficiency is not lost, and the contradiction between the efficiency and the linearity of the Doherty amplifier is greatly relieved.

Description

technical field [0001] The invention belongs to the technical field of power amplifiers, and in particular relates to a Doherty power amplifier and electronic devices. Background technique [0002] As a common power amplifier architecture, the Doherty power amplifier can provide high-efficiency amplification for modulated signals with a peak-to-average ratio. Such as figure 1 Shown is the structure of a traditional Doherty amplifier, which includes a main amplifier M, a peak amplifier P, a power divider 1, a combiner 2, an output matching network 3, and a phase-shifting network 4. The power divider 1 is used to separate the The amplified RF input signal is used for the main amplifier M and the peak amplifier P respectively; the combiner 2 is used to synthesize the signals respectively amplified by the main amplifier M and the peak amplifier P at the junction point; the synthesized signal passes through the output matching network 3 connected to the load. The phase shiftin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/02H03F1/32
CPCH03F1/0288H03F1/32H03F1/3205
Inventor 杨梦苏
Owner KUNSHAN HUATAI ELECTRONICS TECH CO LTD
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