Broadband Interference Signal Generation Circuit Design And Implementation

Jamming is an important branch in the Electronic Countermeasure (ECM). In the thesis, the jamming signal generated by MATLAB software is divided into four relevant documents which are preserved in four SD cards. The data stored in the SD cards will be read by FPGA. Through the bit-extension in FPGA and FIFO data buffer, the format of data will meet the design requirements. The working principle of SD card and the design procedure of FPGA are studied in the paper.This thesis firstly introduces the thought of system design, the basic structure and design procedure of FPGA, the power supply design, and the characteristics and functions of some chips and the JTAG interface, etc. Then this thesis introduces the knowledge of SD card, including card initialization, the conversion of the status, SD card commands and operational process, then the SD card timing is analyzed. Thirdly this thesis provides the realization of the FPGA programming ideas, the design and test of the related functional modules (all modules are programmed in Verilog HDL). Finally this thesis introduces several tools which are used in debugging: Digital oscillograph, and SignalTap II attached of Quartus II, and provides some test process and results.