Auxiliary control circuit of power amplifier module, power amplifier module and communication equipment
A technology of auxiliary control circuit and power amplifier module, applied in program control, computer control, general control system, etc., can solve the problem of low detection accuracy, and achieve the effect of solving low detection accuracy, high-precision measurement, and satisfactory measurement accuracy
Pending Publication Date: 2020-05-08
COMBA TELECOM SYST CHINA LTD
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Problems solved by technology
However, in the process of realizing the present invention, the inventor found that the traditional power amplifier current detection method has the problem of low detection accuracy
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[0036] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0037] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0038] The power amplifier module is mainly composed of two p...
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The invention relates to an auxiliary control circuit of a power amplifier module, the power amplifier module and communication equipment. The auxiliary control circuit of the power amplifier module comprises a main control chip, a first current detection chip and a second current detection chip, wherein an output voltage amplification factor of the first current detection chip is greater than anoutput voltage amplification factor of the second current detection chip; a detection input end of the first current detection chip is used for accessing static voltage of a power amplifier tube powersupply circuit of the power amplifier module; a detection output end of the first current detection chip is electrically connected with the main control chip; the first current detection chip is usedfor carrying out differential amplification on the static voltage and then outputting the static voltage to the main control chip; a detection input end of the second current detection chip is used for accessing the working voltage of the power amplifier tube power supply circuit; a detection output end of the second current detection chip is electrically connected with the main control chip; andthe second current detection chip is used for carrying out differential amplification on the working voltage and then outputting the working voltage to the main control chip. The effect of greatly improving the current detection precision of the power amplifier is achieved by means of the auxiliary control circuit.
Description
technical field [0001] The invention relates to the technical field of current detection, in particular to an auxiliary control circuit of a power amplifier module, a power amplifier module and communication equipment. Background technique [0002] With the continuous development of power electronics technology, the current detection of the power amplifier module is an indispensable link in all kinds of communication equipment in modern communication systems. Through current detection, the working current of the power amplifier module in the communication equipment can be determined, and at the same time The detected operating current can be used as an alarm of the communication system or a feedback control quantity of the power amplifier, etc. As an important part of the communication system, the power amplifier module is mainly responsible for amplifying the power of the communication signal, so as to achieve the purpose of wider coverage and higher transmission data volum...
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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 朱金雄樊奇彦谢路平曾晓松
Owner COMBA TELECOM SYST CHINA LTD