Communications: radio wave antennas – Antennas – Buried underground or submerged under water
Patent
1981-02-20
1987-08-18
Leiberman, Eli
Communications: radio wave antennas
Antennas
Buried underground or submerged under water
343814, H01Q 04
Patent
active
046874453
ABSTRACT:
A subsurface antenna system including at least one pair of radiating elements and feed system is buried within a subsurface medium. The radiating elements comprising the system are spaced apart at least one quarter free space wavelength at an operating frequency. The radiating elements are spaced from each other and the feed system provides appropriate relative phase to signals at the elements to produce from the antenna system a directional antenna pattern in free space.
REFERENCES:
patent: 3346864 (1967-10-01), Harmon
patent: 3594798 (1971-07-01), Leydorf et al.
Berard Jr. Clement A.
Leiberman Eli
RCA Corporation
Troike Robert L.
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