High-speed Signal Multiplexing Communication Signals In The Electromagnetic Environment Simulator And D / A Conversion Design And Realization

Aiming at the scheme of the signal electromagnetic environment simulator of the wireless communication system, the mission of this project is to design and realize the conversion of high speed parallel signal to serial signal and conversion of high speed digital signal to analog signal. The signal comes from the V/UHF wave band of the background simulator. The output of Digital-to-Analog converter provides the basic signal of frequency syntheses.At the time of researching the principle of Parallel-to-Serial convert and Digital-to-Analog convert , this article analyzes characteristics of the high speed circuit, the problem of the circuit and the resolvent of the problem. After analyzing the technological guide line of the whole system, the visualized circuit structure is given and the primary chips are introduced in this paper. And the facture of PCB(Printing Circuit Board) is ordained in some aspects. After debugging the hardware circuits and measuring the output signal, this paper discusses the measures used in improving the performance of the system from two aspects of theory analysis and engineering practice.