Electromagnetic short pulse generation techniques

Novel simple techniques are proposed in this paper to generate extremely short electromagnetic pulses using HEMT devices. The proposed circuits are simulated using Agilent ADS software and fabricated on Neltec (ε_r = 2.2) soft substrate of thickness = 0.254mm using standard Microwave Integrated Circuit (MIC) fabrication techniques. These circuits are tested in the time domain using high frequency oscilloscope and in the frequency domain using spectrum analyzer. The generated short pulse has 0.171 ps duration with peak to peak amplitude of 544.8mV. The measured results show good agreement with the simulation results.