The Design Of Power Amplificatory Circuit In Wireless Transmission System

Today , with the development of shockwave storage measurement technique, applying the wireless transmission technique to the shockwave storage measurement domain already becomes the trend. Aiming at the request that the wireless transmission system for transmission distance, a research on power amplificatory circuit has been done in this paper. By the assistant function of power amplificatory circuit, the transmitter power as well as the receiver delicacy of the wireless transmission system is greatly strengthened, which can satisfy the request that the shockwave storage measurement for wireless transmission distance.First of all, this paper introduces the basic theory and technique parameters of RF(Radio Frequency)amplifier which is the primary part of the power amplificatory circuit, and then a RF amplifier chip that fits the system design is chosen. The design of RF power amplificatory circuit is put forward. Considering the difference of the signal in the transmitter and the receiver, High Gain amplifier and Low Noise amplifier are designed correspondingly. Ansoft designer software is chosen to solve impedance matching problem., and two parts of the software: Smith circle and Microstrip are used . The emulate result indicates that the power amplificatory circuit has basically reached the impedance matching aim.By applying the power amplificatory circuit to the wireless transmission system, the transmission distance of the system can achieve a kilometer, which has basically satisfied the transmission distance request. All above shows that the power amplificatory circuit has great significance for the intelligentize of the storage measurement system.