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 designing the low noise amplifier circuit, 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 low noise amplifier circuit is put forward. Considering the features of the signal in the receiver, Low Noise amplifier are designed. Ansoft designer software is chosen to solve impedance matching problem., by using two parts of the software: tuning and optimization,the s parameters and voltage standing wave ratio are optimized. The simulation result indicates that the power amplificatory circuit has basically reached the impedance matching aim.By applying the low noise amplifier circuit to the wireless transmission system, the transmission distance of the system can achieve 1 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. |