An Electromagnetic Leakage Monitor Using a Polyconductor Thermal Sensing Element
Source abstract
Abstract
This paper describes the design and testing of a sensor circuit for the purpose of thermal detection and power measurement of incident microwave and laser beams due to accidental or targeted exposure. In this sensor, a polyconductor device acts as a microwave or optical beam absorber. The basic feature of the polyconductor is that its terminal resistance in the transition region can vary by many orders of magnitude with small changes in excitation regardless of frequency. A sensitive Wheatstone metering bridge circuit with ambient temperature compensation and a feedback amplitude loop proved adequate for a wide range of fluctuations in ambient temperature and incident power level.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Semiconductor Lasers and Optical Devices · Photonic and Optical Devices · Sensor Technology and Measurement Systems
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (5)
Show source-provided references
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3. Hamid, M. and Lionis, A. 1985. Polyconductor device for laser beam detection and protection. U.S. Patent No. 4,494,835.
4. Lionis, A. 1980. Electromagnetic applications of polyconductors. M.Sc Thesis in Electrical Engineering, Naval Postgraduate School, Monterey, California.
5. Maciejko, J. G. 1975. Polyconductor thermal wattmeter. M.Sc. Thesis in Electrical Engineering, University of Manitoba, Winnipeg, Canada