Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1981-06-19
1983-12-06
Krawczewicz, Stanley T.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
455226, G01R 2700
Patent
active
044196229
ABSTRACT:
A method and device for determining the impedance of the electric and magic fields in the near and far fields associated with a radiating antenna. The electric and magnetic field components are sensed in a far field location and the system is calibrated using a known relationship between the electric and magnetic field components. The sensed signals are transmitted optically via a fiber optic link to an optical receiver. The received optical signals are modulated by an audio signal generator and input into a ratio detector via variable attenuators which are used to calibrate the system. Multiple subsequent ratios are measured and recorded as a function of location of the sensor.
REFERENCES:
patent: 3087111 (1963-04-01), Lehan et al.
patent: 3422345 (1969-01-01), Muse
patent: 3594633 (1971-07-01), Barringer
patent: 3986207 (1976-10-01), Gerbel et al.
patent: 4031469 (1977-06-01), Johnson
Cuneo, Jr. Andrew A.
Loftus James J.
Elbaum Saul
Gibson Robert P.
Krawczewicz Stanley T.
Lane Anthony T.
The United States of America as represented by the Secretary of
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