Communications: radio wave antennas – Antennas – With means for moving directive antenna for scanning,...
Patent
1980-01-08
1981-10-06
Lieberman, Eli
Communications: radio wave antennas
Antennas
With means for moving directive antenna for scanning,...
343809, 343816, 343872, 343883, H01Q 300, H01Q 2100
Patent
active
042938619
ABSTRACT:
A highly compact and lightweight 82 channel all banded VHF-UHF television antenna having three antenna elements wherein each element is the identical physical length and each element includes two half sections. Each antenna element is separated a predetermined distance from each other element wherein the predetermined distance is substantially less than one-tenth of the shortest wave length in the VHF band. A first set of coils are utilized to electrically lengthen the halves of the two elements for reception in the VHF band and a second set of coils are utilized to provide proper delays between the signals received by each antenna element so that when the signals are combined the signals are substantially additive and in phase. The antenna system includes a weatherproof housing containing a rotor, a preamplifier, and electronic circuitry. A deloading mechanism is arranged around the housing to engage the circumference of each antenna element to provide stability under the driving forces that may occur in the atmosphere.
REFERENCES:
patent: 2558727 (1971-07-01), Bernet
patent: 2992430 (1961-07-01), Winegard
patent: 3007167 (1961-10-01), Winegard
patent: 3321764 (1967-05-01), Winegard
patent: 3329960 (1967-07-01), Winegard
patent: 3475759 (1969-10-01), Winegard
patent: 3503074 (1970-03-01), Carter
patent: 3531805 (1970-09-01), Winegard et al.
patent: 3710337 (1973-01-01), Grant
patent: 4038662 (1977-07-01), Turner
RCA, AC-DC Mini-State Antenna System Operating Instructions, 3F4511.
Cowan Keith B.
Shelledy Carey W.
Winegard John R.
Dorr Robert C.
Lieberman Eli
Winegard Company
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