An amplifier is a device that can amplify the voltage or power of an input signal. It is composed of electron tubes or transistors, power transformers and other electrical components. It is used in various devices such as communications, broadcasting, radar, television, and automatic control. Principle: The high-frequency power amplifier is used at the end of the transmitter to amplify the power of the high-frequency modulated wave signal to meet the transmission power requirements, and then radiate it into space through the antenna to ensure that the receiver in a certain area can receive a satisfactory signal level and does not interfere with the communication of adjacent channels.
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