Experimental Design of C-class High Frequency Power Amplifier 

Chunqing YE 

Tianjin Polytechnic University, Tianjin 30384, CHINA 

Abstract: This research presented an experiment on C-class high frequency power amplifier, in which the preamplifier stage under A class linear conditions was used to fit the smaller input signals, and the postamplifier stage under C class linear conditions was adopted to determine the current pulse shape under the conditions of undervoltage, critical voltage, overvoltage, respectively. Through the control of switches and potentiometer, we observe the influences of excitation voltage, supply voltage and ｌｏａｄ change upon the working condition of the C-class high frequency power amplifier. The proposed design gave a further understanding on the basic working principles of the C-class high frequency power amplifier so as to grasp the designing method of such power amplifier. 

Keywords: High Frequency; Pulse Shape; C-class High Frequency Power Amplifier