Communications: radio wave antennas – Antennas – Plural separate diverse type
Patent
1988-07-14
1990-07-24
LaRoche, Eugene R.
Communications: radio wave antennas
Antennas
Plural separate diverse type
343727, 343853, H01Q 2100
Patent
active
RE0332763
ABSTRACT:
In one embodiment, a horizontal antenna 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.
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Ham Seung
LaRoche Eugene R.
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