Method and apparatus system for compensating temperature of power amplifier

A temperature compensation device and power amplifier technology, applied in the electronic field, can solve the problems of high production cost, poor anti-interference, poor temperature accuracy, etc., and achieve the effects of reduced production cost, enhanced anti-interference, and improved temperature compensation accuracy
CN101299595AInactive Publication Date: 2008-11-05NTS TECH CHENGDU
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
NTS TECH CHENGDU
Publication Date
2008-11-05
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention is suitable for the electronic technology field, which provides a power amplifier temperature compensation method and a device system, wherein the method includes obtaining the current working temperature of the temperature compensated power tube, automatically adjusting the optimum grid voltage of the power tube under the current working temperature; computing the warming and invigouating data in a certain range according to the current working temperature and the optimum grid voltage; real-time detecting the working temperature of the power tube, looking for the corresponding offset data in the warming and invigouating data according to the working temperature, and performing the temperature compensation to the power tube by the offset data. The invention automatically matches the corresponding warming and invigouating data for the power tubes required for temperature compensation, and obtains the temperature information of the power tube through the digital temperature sensor, and adopts the separate reference voltage module to provide the reference voltage for the D / A modular converter, which advances the temperature compensation precision of the LDMOS power tube and enhances the interference immunity.
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Description

Technical field

[0001] The invention belongs to the field of electronic technology, and in particular relates to a power amplifier temperature compensation method and device system. Background technique

[0002] The static operating current of the LDMOS power amplifier tube directly affects the performance of the power amplifier tube. Providing different grid voltages to the power amplifier tube can obtain different static operating currents. As the ambient temperature changes, if the grid voltage of the power amplifier tube remains unchanged, the power amplifier The quiescent operating current of the tube will drift, causing the performance of the power amplifier tube to deteriorate.

[0003] On the one hand, the turn-on voltage of the field effect transistor becomes smaller with the increase of temperature. On the other hand, the electron mobility becomes smaller with the increase of temperature. These two aspects influence each other, making the static state of the field ...

Claims

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