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Novel high-performance linear power amplifier

A power amplifier and linear power technology, which is applied in the direction of power amplifiers, amplifiers, amplifier combinations, etc., can solve the problems of low output power, low work efficiency, and inability to adapt to applications with high power quality requirements, and reduce heat loss. , improve efficiency, and have excellent output characteristics

Active Publication Date: 2020-03-27
STATE GRID HUBEI MARKETING SERVICE CENT (MEASUREMENT CENT) +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Switching converters have some inherent defects that cannot be solved, and cannot adapt to some applications that require high power quality. Although traditional linear power amplifiers have obvious advantages in output wavef

Method used

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  • Novel high-performance linear power amplifier
  • Novel high-performance linear power amplifier
  • Novel high-performance linear power amplifier

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Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0018] A new type of high-performance linear power amplifier, which is characterized by comprising a positive current power amplifier and a negative current power amplifier. The positive current power amplifier includes a first transistor 101, a second transistor 102, a third transistor 103, and a fourth transistor 104 , The first DC voltage source 201, the second DC voltage source 202, the third DC voltage source 203, the fourth DC volta...

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Abstract

The invention provides a novel high-performance linear power amplifier. The novel high-performance linear power amplifier comprises a positive current power amplifier and a negative current power amplifier, the positive current power amplifier comprises transistors, a direct current voltage source, a clamping diode and a driving signal source. Grids of the transistors are connected together and connected with the first driving signal source, emitters of the transistors are connected with collectors of the adjacent transistors, emitters of the fourth transistors are output points on one side, anodes of the direct-current voltage sources are connected with cathodes of the direct-current voltage sources, and cathodes of the fourth direct-current voltage sources are output points on the otherside. According to the invention, distortionless following of the control signal is realized, and power amplification is carried out on the control signal with weak power. The voltage drop borne by the power tube is remarkably reduced, the problems that a conventional linear power amplifier is serious in tube consumption and low in efficiency are solved, the capacity of a semiconductor device canbe fully utilized, and the output power is increased.

Description

Technical field [0001] The invention belongs to the technical field of linear power amplifiers, and in particular relates to a novel high-performance linear power amplifier. Background technique [0002] In an amplifier circuit, the output signal is often sent to drive a certain device, such as the voice coil of the speaker in the radio, the control winding of the motor, etc. This type of amplifier circuit that is mainly used to provide power to the load is often called a power amplifier circuit. Power amplification is divided into switching power converters and linear power amplifiers. The PWM switching converter circuit has a simple structure and high efficiency, but its output waveform is essentially a discrete pulse block. The rich harmonics must be filtered out to obtain a single-frequency sinusoidal power with satisfactory performance, and the semiconductor switching device has a high The frequency switching process brings electromagnetic radiation. The linear power ampli...

Claims

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Application Information

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IPC IPC(8): H03F1/32H03F1/02H03F3/21H03F3/68
CPCH03F1/32H03F1/3205H03F1/0205H03F3/211H03F3/68
Inventor 唐登平魏伟蔡文嘉荣先金丁黎李帆郭正刘莉王华陈辉吕馥香夏天马奔李莉杨丽华仇娟邹静周宇雄
Owner STATE GRID HUBEI MARKETING SERVICE CENT (MEASUREMENT CENT)
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