Method for applying radio frequency feedforward technique in power amplifier

A power amplifier and amplifier technology, applied in power amplifiers, improved amplifiers to reduce nonlinear distortion, transmission control/equalization, etc., can solve problems such as signal distortion of radio frequency power amplifiers, and achieve signal distortion, stable performance, and wide application range broad effect

Inactive Publication Date: 2008-01-02
张跃平
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for effectively solving th

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  • Method for applying radio frequency feedforward technique in power amplifier
  • Method for applying radio frequency feedforward technique in power amplifier

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Example Embodiment

[0011] Hereinafter, the present invention will be further described in detail with the best embodiment in conjunction with the accompanying drawings;

[0012] The invention includes a housing (1) and a circuit board (2). One side of the housing (1) is provided with a radio frequency output terminal (3), a radio frequency input terminal (4), a monitoring input terminal (5) and a power input terminal (6). ), a plurality of isolation bins (7) are arranged at the inner bottom of the housing (1), and a built-in circuit board (2).

[0013] The feedforward amplifier mainly includes 2 amplifiers (main amplifier and error amplifier), directional coupler, delay line and loop control network. The directional coupler is used for power distribution and synthesis, the delay line ensures that the feedforward amplifier can work stably in a wider frequency band, and the loop control network is used to ensure the correct cancellation of the signal and distortion.

[0014] The working principle of t...

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Abstract

The invention relates to a method for applying radio feedback technique in power amplifier, while prior radio power amplifier widely used in wireless communication emitter can resolve signal aberration problem effectively, while pre-aberration technique and passive-feedback technique can not effectively resolve the problem. The invention comprises a casing and a circuit board, wherein one side of the casing is provided with a radio output, a radio input, a detection input, and a power input, the bottom of the casing is provided with a plurality of insulation chambers with an internal circuit board, the feedback amplifier mainly comprises two amplifiers (main amplifier and error amplifier), a directional coupler, a delay line, and a loop control network, while the directional coupler distributes and combines powers, the delay line confirms the feedback amplifier works stably in wide band, and the loop control network confirms the correct counteraction between signal and aberration. The invention has stable property, which can effectively resolve signal aberration, with side application, flexible operation or the like.

Description

technical field [0001] The invention relates to wireless communication transmitting equipment, in particular to an application method of a radio frequency feedforward technology in a power amplifier. Background technique [0002] At present, radio frequency power amplifiers are widely used in various wireless communication transmission equipment, but the problem of signal distortion cannot be effectively solved. good effect. Contents of the invention [0003] The purpose of the present invention is to provide a method for effectively solving the signal distortion problem of the radio frequency power amplifier by using the feedforward technology. [0004] The invention includes a housing and a circuit board. A radio frequency output terminal, a radio frequency input terminal, a monitoring input terminal and a power input terminal are arranged on one side of the housing, and several isolation chambers are arranged at the inner bottom of the housing with a built-in circuit b...

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Application Information

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IPC IPC(8): H04B7/005H03F1/32H03F3/20
Inventor 张跃平
Owner 张跃平
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