Electric field sensor capable of reliably measuring an electric

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy

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G01R 3100, H01J 516

Patent

active

056708700

ABSTRACT:
An electric field sensor includes an electric field sensor head (13) for varying an intensity of a propagating light beam from a light source (19) in response to an electric field intensity of an input signal received by a reception antenna (11). A photo-electric converter (21) converts the propagating light beam into an output signal. A correcting device (27) compares the output signal with a reference signal to produce and supply a control signal to the photo-electric converter.

REFERENCES:
patent: 4070621 (1978-01-01), Bassen et al.
patent: 5210407 (1993-05-01), Ito et al.
patent: 5389782 (1995-02-01), Hilliard
Proceedings of the IEEE,, vol. 80, No. 1, Jan., 1992, New York, USA, pp. 209-215, XP000294643, Kanda et al, "Optically Sensed Em-Field Probes for Pulsed Fields".
Review of Scientific Instruments, vol. 63, No. 12, Dec. 1992, New York, USA, pp. 5582-5585, XP000330418, Murooka et al, "Optical High-Sensitive Field Sensor Using a Pockels Crystal".

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