High power impulse generation using lateral stacked nonlinear transmission line

H. Shi

doi:10.1117/12.2303164

1 January 1994 High power impulse generation using lateral stacked nonlinear transmission line

H. Shi

Proceedings Volume 2250, International Conference on Millimeter and Submillimeter Waves and Applications 1994; 225043 (1994) https://doi.org/10.1117/12.2303164
Event: Millimeter and Submillimeter Waves and Applications: International Conference, 1994, San Diego, CA, United States

Abstract

High power impulse generators, with picosecond pulse duration, are very important for wide band radar application. By constructing a nonlinear transmission line (NLTL) with a novel lateral stacking configuration and barrier stacked heterojunction devices, we report that impulses with up to 35 V pulse amplitude, which is equivalent to 12 W for a 50 SI line, and r:.1 8.5 ps FWHM pulse duration can be achieved. Lateral stacking can double or triple the signal amplitude, depending on the level of lateral stacking introduced. Calculations show that for a NLTL with a final pulse width > 8 ps, we can laterally stack up to a factor of two without introducing significant parasitics. In addition, we can quasi-optically power combine the output of four such lines on a 2 inch wafer, resulting in 48 W total output power. In proof-of-principle experiments, two single lines have been designed and will be fabricated. One is a 40 section tapered coplanar strip line with the first 28 sections employing the lateral stacked structure and bow-tie antennas as input and output. The input is a signal with 18 V amplitude and pulse width between 100 ps to 200 ps, while the predicted output is an impulse with 26 V amplitude 6.76 W) and 8 ps pulse duration. The second line is a 30 section tapered coplanar wave guide, suitable for probing, with input signal of 22 V amplitude and 100 to 200 ps pulse duration and the predicted output signal of 35 V amplitude (e:i 12.3 W) and 20 ps pulse duration.

Citation Download Citation

H. Shi "High power impulse generation using lateral stacked nonlinear transmission line", Proc. SPIE 2250, International Conference on Millimeter and Submillimeter Waves and Applications 1994, 225043 (1 January 1994); https://doi.org/10.1117/12.2303164

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KEYWORDS

Picosecond phenomena

Physics

Antennas

Heterojunctions

High power radar

Radar

Semiconducting wafers

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