Self-excited protection attenuation control method for a wireless transceiver system

Abstract

The invention discloses a self-excitation protection attenuation control method for a wireless receiving and transmitting system, and the method comprises the steps: S1, judging whether to trigger attenuation protection or not whether output power reaches a rated value or not: executing step S2 if the attenuation protection is triggered and the output power reaches the rated value, or else executing step S4; S2, carrying out the self-excitation detection after a set time, and returning to step S1 if an excitation phenomenon is judged to be a non-self-excitation phenomenon, or else executing step S3; S3, carrying out the strong self-excitation processing, and then executing step S4; S4, entering a normal working state. According to the embodiment of the invention, the strong self-excitationprocessing is carried out when the self-excitation is detected, so the method can eliminate the self-excitation phenomenon more easily. Furthermore, when the self-excitation happens to the wireless receiving and transmitting system, the method can achieve the finding of a maximum gain point for preventing the self-excitation phenomenon from happening to the system through the detection of the internal automatic gain adjustment and power changes, thereby enabling the wireless receiving and transmitting system to work stably and normally.

Description

technical field [0001] The invention relates to the field of wireless transceivers, and more specifically relates to a self-excited protection attenuation control method of a wireless transceiver system. Background technique [0002] In the wireless transceiver system, self-excitation will push the power amplifier module and the low noise amplifier module to saturation, resulting in rapid deterioration of module indicators, affecting the signal transmission in the wireless transceiver field and its coverage area. In order to avoid system self-excitation, it is necessary to provide high transceiver isolation for the wireless transceiver system. However, the calculation of the isolation degree is complicated, so not only the workload is heavy, but also it is difficult to obtain a suitable isolation degree. In addition, it is difficult to achieve the required isolation in most occasions, resulting in the inability to effectively eliminate the self-excited phenomenon. Content...

AI Technical Summary

Problems solved by technology

However, the calculation of the isolation degree is complicated, so not only the workload is heavy, but also it is difficult to obtain a suitable isolation degree

In addition, it is difficult to achieve the required isolation in most occasions, resulting in the inability to effectively eliminate the self-excited phenomenon

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