| 摘要 |
A novel scanning array antenna is provided with improved gain characteristic which enable a compact form to be employed. The resonant azimuthal modes of separate antenna elements are selected to satisfy certain mathematical relationships which, in effect, form a directional beam which can be steered by a relatively small number of phase shifters. An example of antenna structure is an array of circular microstrip patch in the form of concentric disks each in resonance at one of the azimuthal modes under the disk cavity.
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