A device for controlling the power stability of signals with different peak-to-average ratios and different time slots

Abstract

The invention relates to a method and device for controlling power stability of different peak-to-average ratio signals and different timeslot signals in the technical field of communication. The device disclosed by the invention is characterized by comprising an analog loop used for realizing control on average power, a digital loop used for realizing control on power of the timeslot signals and a temperature sensor used for realizing a temperature detection function, wherein the analog loop is composed of a voltage-controlled attenuator, a power amplifier, a coupler, a power detector, a voltage comparator and a single chip microcomputer; and the digital loop is composed of a digital control attenuator, a power amplifier, a coupler, a power detector and a single chip microcomputer. By adopting the method and device disclosed by the invention, the power stability of different peak-to-average ratio signals and different timeslot signals, which is controlled by the power amplifier at different temperatures, is improved, the effect that the power amplifier stably outputs powers of different signals at different power grades is realized, and control on output power of the power amplifier is realized.

Description

technical field [0001] The invention relates to a device for controlling the power stability of signals with different peak-to-average ratios and different time slots in the technical field of mobile communication. Background technique [0002] Each GSM modulated signal contains 8 full-rate time slot signals, and the transmission of the signal power of the mobile station is not continuous, and the pulse sequence is only transmitted in the specified time slot; a burst pulse sequence is a series of modulated carrier frequency data streams , occurs in one time slot, and the duration of a time slot is (576+12 / 13)us. A full time slot signal contains 8 continuous single time slot signals, and the duration of a full time slot signal is about 4.6ms (577us*8). [0003] In practical applications, it is not necessarily true that each carrier frequency GSM modulation signal uses a full time slot signal. Sometimes only a single time slot is used, and sometimes a half time slot (4 time s...

AI Technical Summary

Problems solved by technology

In a high-power power amplifier, when the average output power reaches the nominal full power, every time the average output power increases by 0.5dB, the linearity index of the amplifier will deteriorate faster, which will affect the communication quality, and when the average output power is larger When the power output is increased by 0.5dB, the power consumption of the equipment will increase more, resulting in problems such as equipment linearity index difference and high temperature. Therefore, the requirements for power amplifier output stability in the design of power amplifiers for mobile communication base stations and repeaters are getting higher and higher.

However, since the performance and accuracy of the device will change under different temperature environments, this will affect the output stability of the power amplifier at different temperatures. Therefore, whether it is a base station or a repeater, useful measures must be taken to improve the power amplifier. output stability

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