Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Patent
1993-08-27
1995-10-17
Nguyen, Vinh P.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Using radiant energy
324750, G01R 3100
Patent
active
054593948
ABSTRACT:
An electro-optical measurement device for the sampling of an electric signal (SI) in an electronic component by means of a radiation beam. Special embodiments of the electro-optic measurement device are described. An electro-optic sensor element is provided with an electrically conductive tip at one side and with an electrode at the other side, so that an absolute and calibrated measurement is possible. The measurement beam can be high-frequency pulsed with a pulse (Lp) per period of the test signal (SI). The pulse series is low-frequency modulated and the pulses exhibit, relative to the test signal, a constant phase relationship during the first half periods of the modulation signal and a varying phase relationship during the second half periods so that accurate and reliable measurement is possible.
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Microelectronic Engineering vol. 16 No. 1/4 (Mar. 1992) pp. 341-348 "Waveform Measurements with Calibrated Amplitude by Electro-Optic Samples in IC's" by Kees De Kort and Joris J. Brehen.
De Kort Cornelis G. C. M.
t Hooft Gert W.
Vrehen Joris J.
Franzblau Bernard
Nguyen Vinh P.
U.S. Philips Corporation
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