Monolithic photoconductive GaAs pulser and its radiated waveform

A. H. Kim; Robert J. Zeto; Robert J. Youmans; Maurice Weiner; George T. Tran; Louis J. Jasper Jr.; Bogoliub Lalevic

doi:10.1117/12.59047

1 May 1992 Monolithic, photoconductive GaAs pulser and its radiated waveform

A. H. Kim, Robert J. Zeto, Robert J. Youmans, Maurice Weiner, George T. Tran, Louis J. Jasper Jr., Bogoliub Lalevic

Proceedings Volume 1631, Ultrawideband Radar; (1992) https://doi.org/10.1117/12.59047
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

A monolithic, photoconductive impulse generating device, in which the functions of energy storage and switching are combined into a single semi-insulating GaAs wafer substrate, was investigated under various operating conditions. Depending on the load impedance, this new type of device produced nanosecond impulses with various pulse shapes. The operation of this device with a positively mismatched load impedance (50 ohm) resulted in output voltage enhancement (voltage gain factor of 2.0) as well as fast pulse risetime (260 ps). Further, an ultra-wideband horn antenna was excited by a output pulse from this device and its radiative waveform was measured using a B-dot sensor.

Citation Download Citation

A. H. Kim, Robert J. Zeto, Robert J. Youmans, Maurice Weiner, George T. Tran, Louis J. Jasper Jr., and Bogoliub Lalevic "Monolithic, photoconductive GaAs pulser and its radiated waveform", Proc. SPIE 1631, Ultrawideband Radar, (1 May 1992); https://doi.org/10.1117/12.59047

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