Communications: radio wave antennas – Antennas – Plural separate diverse type
Patent
1985-09-18
1988-03-15
LaRoche, Eugene R.
Communications: radio wave antennas
Antennas
Plural separate diverse type
343727, 343853, H01Q 2100
Patent
active
047316152
ABSTRACT:
In one embodiment, a horizontal antenna is mounted electrically separated from but near the top of a vertical antenna. For a given wattage and frequency and for two stations separated a known distance apart, the proscribed angle of elevation for ionospheric reflection for each station can be computed. The current and phase of the signal applied to the horizontal antenna can be adjusted to cancel the electromagnetic field waves emitted from the vertical antenna in the selected azimuth and angle of elevation. The cancellation effects waves of a certain angular orientation at the proscribed angle of elevation for ionospheric reflection.
REFERENCES:
patent: 1853021 (1932-04-01), Alexanderson
patent: 1863518 (1932-01-01), Young
patent: 1909937 (1933-05-01), Eckersley
patent: 1912754 (1933-06-01), Bohm et al.
patent: 2048726 (1936-07-01), Bohm
patent: 2083260 (1937-06-01), Godley et al.
patent: 2195232 (1940-03-01), Wells et al.
patent: 2283617 (1942-05-01), Wilmotte
patent: 3562755 (1971-02-01), Bonadio
patent: 3761940 (1973-09-01), Hollingsworth
patent: 4670760 (1987-06-01), Biby
Ham Seung
LaRoche Eugene R.
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