Communications: radio wave antennas – Antennas – With coupling network or impedance in the leadin
Patent
1972-03-07
1976-03-09
Lieberman, Eli
Communications: radio wave antennas
Antennas
With coupling network or impedance in the leadin
343 16M, 333 84L, H01Q 128, H01Q 326
Patent
active
039435237
ABSTRACT:
An improved directional antenna for use in an airborne vehicle is shown. The contemplated antenna includes a planar phased array of antenna elements mechanically rotatable about an axis of rotation, the plane of such array making an acute angle with such axis. The beam from such array may be electronically scanned, within wide limits, regardless of the orientation of the phased array. Also shown is an improved constrained centerfeed for the antenna elements in each row thereof in such array, the disclosed feed incorporating a double ladder arrangement, including wideband couplers, to permit the extensive use of stripline and at the same time to allow practically independent adjustment of azimuth and elevation difference patterns when the phased array is used as an element in a monopulse system.
REFERENCES:
patent: 3673606 (1972-06-01), Maune
Lieberman Eli
McFarland Philip J.
Pannone Joseph D.
Raytheon Company
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