Patent
1974-07-12
1976-03-30
Libman, George H.
H04B 1700
Patent
active
039477703
ABSTRACT:
A device for indicating the intensity of the vertical component of an incnt electromagnetic field independently of the frequency or the direction of the field uses a dual-loop antenna, current transformers and a means for combining voltage signals. The two antenna loops are planar and the planes of the loops are disposed orthogonally to each other. The loops are arranged to intersect at a common central axis, and the loops are thus symmetrically disposed about the axis. When a source of electromagnetic radiation is incident on the antenna, a current is generated in the loops which is then transformed into a voltage and combined to produce an output which is independent of frequency, of the direction of the field, and is thus representative of the total vertical field intensity.
REFERENCES:
patent: 2690509 (1954-09-01), Toth
patent: 3296533 (1967-01-01), Karpinsky
patent: 3783448 (1974-01-01), Brodwin
Cavanagh John F.
Vaught Dennis E.
Wolfe Hugh K.
Hearn Robert
Libman George H.
The United States of America as represented by the Secretary of
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