| 摘要 |
<p>A method of suppressing grating lobes generated in a radiating pattern of a phased array antenna, and a patch antenna element for use in the phased array- antenna are described. The phased array antenna is formed from a plurality of symmetrical patch antenna elements (20) spaced apart at a predetermined distance from each other. Each patch antenna element is configured for producing an asymmetrical radiation pattern. The antenna element includes a conductive ground plane (21), a radiating patch (23) backed by a cavity (22) and arranged in cavity aperture (221), and a feed arrangement. The patch antenna element is configured such that a dimension of the radiating patch along the E-plane of the antenna element is less than the dimension of the cavity aperture along the E-plane by a first predetermined value that is selected to provide an asymmetrical radiation pattern of the patch antenna element.</p> |
