Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With waveguide or long line
Patent
1977-03-02
1978-05-23
Rolinec, Rudolph V.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With waveguide or long line
324 725, 324 96, 343703, G01R 2104, G01R 3100
Patent
active
040913279
ABSTRACT:
A broadband active isotropic receiving antenna for use with a conventional lectromagnetic interference receiver to measure weak near-zone electric fields of unknown polarization. The antenna consists of three mutually orthogonal active dipoles, including RF amplifier circuitry and light emitting diode means, located therein coupled to fiber optic waveguide means. The frequency range of each of the three field components is amplified and used to modulate respective light emitting diodes whose modulated infrared or visible signals are guided through the fiber optic waveguide means to photo-detectors at the far end of the fiber optic guides. These photo-detectors recover the RF modulation from the IR carrier which is then time multiplexed for input to the electromagnetic interference receiver. The DC output from the receiver is processed to provide an output voltage proportional to the square root of the sum of the squares, i.e. the Hermitian magnitude of the three mutually orthogonal electric field components.
REFERENCES:
patent: 3461384 (1969-08-01), Bayati et al.
patent: 3750017 (1973-07-01), Bowman et al.
Andrews James R.
Baldwin Eugene E.
Larsen Ezra B.
Edelberg Nathan
Goldberg Edward
Kanars Sheldon
Karlsen Ernest F.
Rolinec Rudolph V.
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