Communications: radio wave antennas – Antennas – With spaced or external radio wave refractor
Patent
1977-06-17
1979-09-18
Lieberman, Eli
Communications: radio wave antennas
Antennas
With spaced or external radio wave refractor
343854, H01Q 326
Patent
active
041685032
ABSTRACT:
A radiated signal, received by each one of a plurality of spatially separated antennas, forming a directive array, is coherently recovered by the lens. The lens is comprised of a plurality of vertically standing and circularly arranged printed circuit panels, each of which includes a conductive strip connected at one end to each antenna. A plurality of semi-elliptical circuit panels are affixed to the vertical panels at a predetermined angle with respect thereto. Plated on the semi-elliptical panels are metal strips of predetermined length to provide the desired time delay to the antenna signals. A combining strip couples to the time delay strips and provides a combined output signal at one end of the semi-elliptical panel. The angle at which the semi-elliptical boards are affixed to the vertical boards corrects for time delay distortion caused by the placement of the combining strip.
REFERENCES:
patent: 3293648 (1966-12-01), Kuhn
patent: 3295134 (1966-12-01), Lowe
patent: 3911442 (1975-10-01), Hatch
patent: 3940770 (1976-02-01), Fassett et al.
patent: 3971125 (1976-07-01), Thies
Gillman James W.
Hackbart Rolland R.
Hamley James P.
Lieberman Eli
Motorola Inc.
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