Title :
A Tunable Ultra-Wideband Pulse Generator Using a Variable Edge-Rate Signal
Author :
Maxwell, Erick ; Weller, Thomas ; Harrow, Jeffrey
Author_Institution :
Dept. of Electr. Eng., South Florida Univ., Tampa, FL
Abstract :
This paper presents a pulse-duration tunable ultra-wideband (UWB) generator that is developed using a variable edge-rate signal. Edge-rate variability is introduced by applying a step recovery diode (SRD) to compress the edges of the source and then employing a simple RC network to adjust the edge-rate. Afterwards, the compressed signal is differentiated using microstrip transmission lines in a short circuit stub configuration. The tunable generator resulting from this approach demonstrates Gaussian and monocycle pulses with: good symmetry and low distortion over the tunable range; pulse width variation from 800 to 1150ps over a 1-20pF capacitance range; and good agreement between simulated and measured results
Keywords :
RC circuits; circuit tuning; microstrip lines; pulse generators; semiconductor diodes; ultra wideband technology; 1 to 20 pF; 800 to 1150 ps; Gaussian pulse; edge-rate variability; microstrip transmission lines; monocycle pulse; pulse width variation; pulse-duration generator; short circuit stub configuration; simple RC network; step recovery diode; tunable ultra-wideband pulse generator; variable edge-rate signal; Capacitance; Diodes; Distributed parameter circuits; Microstrip; Pulse generation; Pulse measurements; Signal generators; Space vector pulse width modulation; Tunable circuits and devices; Ultra wideband technology;
Conference_Titel :
Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0387-1
DOI :
10.1109/APCCAS.2006.342123
