Stripline four port hybrid junction

Details Stripline four port hybrid junction Stripline four port hybrid junction

1977-02-02

1978-03-21

Gensler, Paul L.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 84M, H01P 516

Patent

active

040805794

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. Also shown is an improved hybrid junction for the stripline circuits used in the disclosed antenna system, such hybrid junction being adapted to couple radio frequency energy between two stripline circuits disposed in a top and bottom relationship. Such stripline circuits share a common ground conductor having a circular opening formed therethrough for coupling radio frequency energy between the circuits. The top and bottom stripline circuits have a pair of orthogonally disposed center conductors which couple to the circular opening in the common ground conductor. The top and bottom center conductors are disposed to form an angle of 45 degrees with respect to each other.

REFERENCES:
patent: 3575674 (1971-04-01), Howe, Jr.
patent: 3715689 (1973-02-01), Laughlin

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