AIRBORNE MULTI-MODE RADIATING AND RECEIVING SYSTEM

Details AIRBORNE MULTI-MODE RADIATING AND RECEIVING SYSTEM AIRBORNE MULTI-MODE RADIATING AND RECEIVING SYSTEM

1972-03-07

1976-04-27

Lieberman, Eli

Communications: radio wave antennas

Antennas

With aircraft

343765, 343854, H01q 128

Patent

active

039538575

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

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