Photoconductive circuit element pulse generator

Details Photoconductive circuit element pulse generator Photoconductive circuit element pulse generator

1989-03-03

1989-09-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250213A, H01J 4014

Patent

active

048702951

ABSTRACT:
A pulse generator for characterizing semiconductor devices at millimeter wavelength frequencies where a photoconductive circuit element (PCE) is biased by a direct current voltage source and produces short electrical pulses when excited into conductance by short laser light pulses. The electrical pulses are electronically conditioned to improve the frequency related amplitude characteristics of the pulses which thereafter propagate along a transmission line to a device under test.

REFERENCES:
patent: 3278846 (1966-10-01), Patten et al.
patent: 4681449 (1987-01-01), Bloom et al.
patent: 4712057 (1987-12-01), Pau
patent: 4745361 (1988-05-01), Nees
David H. Auston, "Impulse Response of Photoconductors in Transmission Lines," IEEE J. Quantum Electron, vol. QE-19, No. 4, 639-647 (Apr. 1983).
William R. Eisenstadt et al., "On-Chip Picosecond Time--Domain Measurements for VLSI and Interconnect Testing Using Photoconductors," IEEE Trans. Electron Devices, vol. ED-32, No. 2, 364-369 (Feb. 1985).

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