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Doherty power amplification circuit, power amplifier, terminal and base station

A power amplifier circuit and circuit technology, applied in the fields of Doherty power amplifier circuits, terminals and base stations, and power amplifiers, can solve problems such as inability to directly apply broadband application scenarios, achieve flexible adjustment, avoid bandwidth restrictions, and wide operating bandwidth Effect

Active Publication Date: 2019-05-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional Doherty power amplifier structure has some bandwidth limiting factors, making it unable to be directly applied to broadband application scenarios

Method used

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  • Doherty power amplification circuit, power amplifier, terminal and base station
  • Doherty power amplification circuit, power amplifier, terminal and base station
  • Doherty power amplification circuit, power amplifier, terminal and base station

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Embodiment Construction

[0045] Embodiments of the present application are described below with reference to the drawings in the embodiments of the present application.

[0046] The terms "comprising" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.

[0047] See figure 1 , figure 1 Schematic diagram of the efficiency and output power curve of the power amplifier designed for the existing single power tube; where the abscissa is the output power, and the ordinate is the efficiency. The curve of the triangle series is the curve of efficiency and output power change. Such ...

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Abstract

The embodiment of the invention discloses a Doherty power amplification circuit, a power amplifier, a terminal and a base station. The Doherty power amplification circuit comprises an input network which is used for decomposing an input signal into a first signal and a second signal and outputting the first signal and the second signal; The main transistor which is used for receiving the first signal and amplifying the first signal to generate a first amplified signal; The peak transistor which is used for receiving the second signal and amplifying the second signal to generate a second amplified signal; The broadband load modulation network which is connected with the output end of the main transistor and the output end of the peak transistor and used for synthesizing and outputting the first amplification signal and the second amplification signal, Wherein the relative bandwidth of the broadband load modulation network is greater than a preset threshold; And the output matching network which is used for receiving and outputting the synthesized signal, and converting the output impedance of the broadband load modulation network into a preset impedance matched with a post-stage circuit. By adopting the embodiment of the invention, the Doherty power amplification circuit can support a broadband application scene.

Description

technical field [0001] The present application relates to the field of circuit technology, in particular to a Doherty power amplifier circuit, a power amplifier, a terminal and a base station. Background technique [0002] The radio frequency power amplifier is one of the key components in the modern wireless communication system. It is located at the last stage of the entire system chain and is usually the largest energy-consuming component in the system, so its performance will greatly affect the performance of the entire system. Various indicators such as operating bandwidth, linearity and efficiency, etc. With the rapid development of modern wireless communication technology, more and more communication standards and working frequency bands have been adopted. This situation has given birth to a strong demand for broadband wireless communication systems. As a key component in wireless communication systems, power amplifiers are also facing this demand. In recent years, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/02H03F3/20
Inventor 庞竞舟约翰内斯·贝内迪克特韩冬
Owner HUAWEI TECH CO LTD
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