Automatic power gain control protection device

Abstract

The invention provides an automatic power gain control protection device, which comprises a gain processing module, a power computing module, a power comparison module and a gain computing module, wherein the gain processing module multiplies an input base band signal by a gain value to obtain an output base band signal, and feeds the output base band signal back to the power computing module; the power computing module computes a power value of the output base band signal, and outputs the power value to the power comparison module; the power comparison module judges the power value according to a preset threshold value, and acquires a gain computing parameter according to a judgment result; the gain computing module computes the gain value according to the gain computing parameter, and outputs the gain value to the gain processing module; and the gain processing module multiplies the gain value by the input base band signal again to obtain the output base band signal. By a technology provided by the invention, a protective circuit of a communication system is reduced, the cost of equipment is reduced, simultaneously response is quickened and the security of post equipment is better protected.

Description

technical field [0001] The invention relates to a power automatic gain control protection device, which belongs to the technical field of communication. Background technique [0002] With the development of mobile communication technology, people have higher and higher requirements for operator signal coverage and reliability. Communication equipment is becoming more and more sophisticated and expensive. It is becoming more and more important to realize power limit protection and avoid burnout of post-amplification equipment caused by network abnormalities or equipment abnormalities. [0003] Currently, the technologies used (such as figure 1 As shown) is to add a protection circuit before the power amplifier to achieve the purpose of power limit protection. However, due to the need to add an additional circuit, the cost of the equipment is increased, and the response speed of the analog signal processing is slow, resulting in a slow response speed of power control. Cont...

AI Technical Summary

Problems solved by technology

[0003] Currently, the technologies used (such as figure 1 shown) is to add a protection circuit before the power amplifier to achieve the purpose of power limit protection. However, due to the need to add an additional circuit, the cost of the equipment is increased, and the response speed of the analog signal processing is slow, resulting in a slow power control response.

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