Underground antenna
First Claim
1. AN UNDERGROUND ANTENNA IN A MOUNTAIN OR LARGE HILL HAVING A ROCK SUB-SURFACE AND A SURFACE SLOPE GREATER THAN ABOUT 10* IN A DESIRED AZIMUTH DIRECTION WHICH COMPRISES A RESONANT ANTENNA IN SAID ROCK SUB-SURFACE, THE DEPTH OF SAID ANTENNA BEING AT LEAST APPROXIMATELY ONETENTH WAVELENGTH IN THE MEDIUM AT THE OPERATING FREQUENCY, THE ELECTRICALLY CONDUCTIVE SURFACE OF SAID ANTENNA BEING CLOSELY ADJACENT SAID SUB-SURFACE ROCK IN CLOSE COUPLING RELATIONSHIP THEREWITH, SAID ANTENNA HAVING A POSITION AND ORIENTATION PREDETERMINED TO YIELD A RADIATION PATTERN HAVING A MAJOR LOBE DIRECTED TOWARD SAID SURFACE SLOPE AND A REFRACTED BEAM IN AIR HAVING NEAR-MAXIMAL RADIATION VECTORS AT SMALL ANGLES TO THE HORIZONTAL IN SAID DESIRED DIRECTION.
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Accused Products
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Citations
1 Claim
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1. AN UNDERGROUND ANTENNA IN A MOUNTAIN OR LARGE HILL HAVING A ROCK SUB-SURFACE AND A SURFACE SLOPE GREATER THAN ABOUT 10* IN A DESIRED AZIMUTH DIRECTION WHICH COMPRISES A RESONANT ANTENNA IN SAID ROCK SUB-SURFACE, THE DEPTH OF SAID ANTENNA BEING AT LEAST APPROXIMATELY ONETENTH WAVELENGTH IN THE MEDIUM AT THE OPERATING FREQUENCY, THE ELECTRICALLY CONDUCTIVE SURFACE OF SAID ANTENNA BEING CLOSELY ADJACENT SAID SUB-SURFACE ROCK IN CLOSE COUPLING RELATIONSHIP THEREWITH, SAID ANTENNA HAVING A POSITION AND ORIENTATION PREDETERMINED TO YIELD A RADIATION PATTERN HAVING A MAJOR LOBE DIRECTED TOWARD SAID SURFACE SLOPE AND A REFRACTED BEAM IN AIR HAVING NEAR-MAXIMAL RADIATION VECTORS AT SMALL ANGLES TO THE HORIZONTAL IN SAID DESIRED DIRECTION.
Specification
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Current AssigneeGregory J. Harmon
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Original AssigneeGregory J. Harmon
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InventorsHarmon, Gregory J.
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Application NumberUS04/578,407Time in Patent Office396 DaysField of SearchUS Class Current343/719CPC Class CodesH01Q 1/04 Adaptation for subterranean...
