| Autor: |
J.W. Burger, Michael C. Skipper, Walter R. Buchwald, Michael D. Abdalla, J. S. Tyo, J. S. H. Schoenberg |
| Rok vydání: |
1997 |
| Předmět: |
|
| Zdroj: |
IEEE Transactions on Plasma Science. 25:327-334 |
| ISSN: |
0093-3813 |
| DOI: |
10.1109/27.602507 |
| Popis: |
An ultrawide-band (UWB) pulse generator based on high-gain (lock-on mode) gallium arsenide (GaAs) photoconductive semiconductor switches (PCSS's) is presented. Revised PCSS contact design shows improved performance in hold-off field, on-state switch potential, and switching jitter, while reducing the switch volume by 75% compared to previous designs. A compact laser diode module operates at 904 nm and triggers the PCSS at pulse repetition rates (PRR) of up to 2 kHz. The 625 W laser diode output power is found to be sufficient to produce switching jitter of 65 ps rms at a switched field of 80 kV/cm. The PCSS switching jitter is found to have a strong dependence upon the switched field when triggered with the laser diode module. The revised PCSS geometry is easily integrated into a compact, parallel-plate source used to drive a TEM horn impulse-radiating antenna. The radiated field has a rise time of 330 ps and an adjustable low-frequency spectrum. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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