Hong Yingping

Design of acquisition and controlling system for multi-channel digital-analog signal based on FPGA

Acquisition Device is the core of this system. Acquisition module is controlled by the Ground monitoring device, which is responsible for collecting 48 routes analog signal with different sampling rate, receiving digital signals transported by RS-422 (1 route), and transmitting acquired analog and digital signals to ground monitoring device for real-time monitoring. At the same time, after mixing and compiling frame, Acquisition module sends signals to the storage module in parallel way. The collected signals are analyzed by means of the date which is read out of the storage module. This acquisition and controlling system has been applied in the check of flight test in one flight vehicle.

Design of Wireless Coupling Signal Transmission Antenna and Impedance Matching

In this work, an extremely compact antenna is designed and used for wireless coupling signal transmitting. This antenna is constituted by a planar spiral inductance and a capacitance. The inductance is designed with 10 turns, 0.5mm turn width, 0.5mm turn spacing and 21mm inner diameter. Calculate the planar inductance parameter and use ADS (Advanced Design System) software to match the antenna impedance at the center frequency of 8.54MHZ. Structuring the impedance matches circuit. Compare the voltage or impedance changes before and after the antenna impedance matching, and optimize the antenna impedance matching network.