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A microwave antenna comprising a dielectric sheet with a ground conductor on one side and an array of antenna elements on the other side. The elements are connected in shunt by feeder lines which are inclined to the direction of polarization of the antenna. The elements may be fed from a common cent

A microwave antenna comprising a dielectric sheet with a ground conductor on one side and an array of antenna elements on the other side. The elements are connected in shunt by feeder lines which are inclined to the direction of polarization of the antenna. The elements may be fed from a common central feed point. A suitable pattern of feeder lines comprises a plurality of parallel regularly-spaced lines inclined at a given angle to the direction of polarization and intersected by a single feeder line inclined at a mirror-inverted angle to the direction of polarization. The feeder lines are suitably of much higher impedance than the elements. Power tapering across the antenna apertures giving good polar diagrams is readily obtainable with such an arrangement.

대표청구항 ▼

A microwave antenna comprising a dielectric sheet having a conductive sheet on one major surface thereof and having on the other major surface thereof opposite said conductive sheet a first and second conductive feeder line connected to each other at a common point therealong and a first and second

A microwave antenna comprising a dielectric sheet having a conductive sheet on one major surface thereof and having on the other major surface thereof opposite said conductive sheet a first and second conductive feeder line connected to each other at a common point therealong and a first and second plurality of antenna elements connected to said first and second lines, respectively, at spaced locations therealong to define an antenna array having a linearly polarized radiation pattern, said first and second plurality each including at least two of said antenna elements connected at immediately adjacent locations along the respective feeder line and spaced from each other both parallel and perpendicular to the direction of polarization, said first and second feeder lines being inclined in mutually opposite directions over substantially all of the length thereof between said immediately adjacent locations at an angle other than np2, where n equals 0, 1, 2,..., with respect to the direction of polarization.