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Doherty power amplification circuit applied to average power tracking and electronic equipment

A power amplifier circuit and main power amplifier technology, applied in the field of signal processing, can solve problems such as fixed bias, achieve consistent conduction angle, realize the effect of conduction angle and optimal load modulation

Pending Publication Date: 2021-02-26
SHENZHEN FM ELECTRONICS GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a Doherty power amplifying circuit and electronic equipment applied to average power tracking, so as to solve the shortcomings of adopting fixed bias

Method used

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  • Doherty power amplification circuit applied to average power tracking and electronic equipment
  • Doherty power amplification circuit applied to average power tracking and electronic equipment
  • Doherty power amplification circuit applied to average power tracking and electronic equipment

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0047] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or...

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Abstract

The invention provides a Doherty power amplification circuit applied to average power tracking, which comprises a peak power amplifier and a power supply module, and is characterized in that the output end of the power supply module is directly or indirectly connected to the first pole of the peak power amplifier; the second pole of the peak power amplifier is directly or indirectly grounded; andthe gate of the peak power amplifier is used for accessing a signal; the Doherty power amplification circuit comprises a bias module, the peak power amplifier is a CMOS device, and the bias module comprises an operational amplifier; the first input end of an operational amplifier is directly or indirectly connected with the output end of the power supply module; the second input end of the operational amplifier is used for receiving a reference voltage; the output end of the operational amplifier is directly or indirectly connected with the gate of the peak power amplifier so as to adjust, according to the voltage difference value of the two input ends, the bias voltage of the gate of the peak power amplifier; and the power supply module is directly or indirectly connected with the averagepower tracking control module.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a Doherty power amplifying circuit and electronic equipment applied to average power tracking. Background technique [0002] In the Doherty power amplifier circuit, there can be a peak power amplifier and a main power amplifier (also known as an auxiliary power amplifier). Average Power Tracking (APT, Average Power Track) can be understood as being able to track the average power, and then, based on the tracking results, the power supply voltage of the power module can be adjusted, specifically, the change of the voltage of the public power supply with the tracked average power can be controlled And change. [0003] In the related art, if the Doherty power amplifier circuit is configured to output the maximum power, then the Doherty load modulation will be inappropriate when the power supply voltage is lowered by using the APT. In this configuration, with a fixed supply DC volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/07H03F1/42H03F3/20
CPCH03F1/07H03F1/42H03F3/20
Inventor 李科举张启超
Owner SHENZHEN FM ELECTRONICS GRP CO LTD
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