Recent development of SRD- and FET-based sub-nanosecond pulse generators for ultra-wideband communications

Various low-cost, compact planar ultra-wideband (UWB), ultra-short pulse generators have been developed using step recovery and PIN diodes and MESFET. These include fixed and electronically tunable pulse generators. Fixed pulses ranging from 115 to 300 ps and tunable pulses Varying from 300 to 800 ps have been demonstrated experimentally and theoretically. Good agreement between measured and calculated results is also achieved. These pulse generators find applications in UWB communications systems, both transmitter and receiver.