Design and implementation of an ultra-wide band pulse compression signal generation system

The generation of ultra-wide-band pulse compression signals is a very important technology for microwave imaging, buried targets detection, and target identification. Direct digital waveform synthesis (DDWS) enables the waveform agility to be realized easily, and the signal bandwidth can be enlarged by additional orthogonal modulator and double frequency chain circuits. An ultra-wide-band pulse compression signal generation system is introduced, which generates LFM/NLFM signals with a 400 MHz bandwidth at 1200 MHz radio frequency. The test results show that spurious components and harmonics below -55 dB and -50 dB respectively.