Fengzhi Dai^1,2, Haokang Wen^1
1Tianjin University of Science and Technology, China,
²Tianjin Tianke Intelligent and Manufacture Technology CO., LTD, China
pp. 128-132
ABSTRACT
This paper studies and designs a gain controllable radio frequency amplifier system. As the hardware core of the whole system, the variable gain amplifier realizes the data function of the amplifier combined with the single chip microcomputer. After adjusting the gain of RF amplifier, the input signal can be amplified or attenuated, and the ideal output signal can be obtained. Experimental results show that the gain controllable radio frequency amplifier system designed in this paper can achieve better control effects to amplify some signals. Theoretically, in real life, this amplifier has the advantage of being able to meet higher indicators, stable performance, and certain practicality.

ARTICLE INFO
Article History
Received 25 October 2019
Accepted 17 August 2020

Keywords
Radio frequency amplifier
Gain controllable
Single chip microcomputer

JAALR1305

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