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Power amplifier protection device and method for UHF wide-band transmitter

A technology for protection devices and transmitters, applied in the direction of reducing distortion, improving control circuits, electrical components, transmission systems, etc., can solve the problems of transmitter power amplifier burnout, expensive, etc., to ensure performance and quality, protect power amplifiers, and increase reliability Effects on Sexuality and Utility Life

Active Publication Date: 2009-03-04
SUNWAVE COMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These features make the 470-860MHz UHF transmitter power amplifier very easy to be burned, and the power amplifier equipment is the most expensive part of the transmitter

Method used

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  • Power amplifier protection device and method for UHF wide-band transmitter
  • Power amplifier protection device and method for UHF wide-band transmitter
  • Power amplifier protection device and method for UHF wide-band transmitter

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0026]The device and method of the present invention are aimed at wideband transmitter power amplifier. From the input and output characteristics of the power amplifier, there are both software and hardware to fully protect the power amplifier. The device mainly includes an input overpower protection unit, an output overpower protection unit and an output standing wave ratio protection unit, a power amplifier, an output sampling unit, a power amplifier control unit, temperature detection, power supply detection, and a control method. The radio frequency signal first passes through the input overpower protection unit, secondly through the output overpower protection and output standing wave ratio protection unit, then enters the power amplifier, and finally passes through the output sampling unit; the power amplifier control unit is used by the control center ...

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PUM

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Abstract

The invention relates to a protective device and a method for power amplification of a UHF broad frequency band transmitter, comprising an input overpower protecting unit, an output overpower protecting and output standing wave ratio protecting unit, a power amplifier, an output sampling unit, a power amplification control unit, temperature detection, power supply detection, and a control method; a radio-frequency signal enters the power amplifier by passing through the input overpower protecting unit and the output overpower protecting and output standing wave ratio protecting unit, and finally passes through the output sampling unit; the power amplification control unit is a control center and used for loading a control program so as to obtain various data of power amplification working condition and setting and controlling the input overpower protecting unit, the output overpower protecting and output standing wave ratio protecting unit and the power supply detection. The beneficial effect of the invention is that: by effectively integrating a plurality of units together, the power amplification of the UHF broad frequency band transmitter can be effectively and reliably protected in an all-around manner, and the working reliability and the practical service life of the transmitter are improved.

Description

technical field [0001] The invention relates to digital TV broadcasting and mobile communication system transmitter technology, and is particularly suitable for a power amplifier protection device and method for UHF broadband digital broadcasting TV transmitters. Background technique [0002] In mobile communication systems and digital broadcast communication systems, especially digital TV broadcast communication systems, in order to meet the requirements of large coverage, the RF output power of the transmitter is very large, reaching the kilowatt level. The RF power amplifiers in the transmitter all work in the state of high current and high power, and the performance of the RF power amplifier directly affects the performance of the system and the electromagnetic coverage effect. In order to make the RF power amplifier work safely and reliably, a relatively complete power amplifier protection automatic control circuit is required in the power amplifier circuit, such as inp...

Claims

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Application Information

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IPC IPC(8): H04B1/04H03G1/04
Inventor 赖敏福吴志坚
Owner SUNWAVE COMM
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