| 摘要 |
An electronically scannable microwave antenna having a minimum physical size suitable for mounting in the leading edge of an aircraft wing or the like. A multiplicity of waveguide radiators form a horizontal array having a common horn for limiting the vertical beamwidth. The radiators are fed by a common continuous sinuous waveguide having a plurality of coupling apertures for feeding the radiators in phase. The sinuous waveguide includes coupling sections above and below the radiators to minimize the horizontal size of the antenna. The coupling apertures are formed to provide a linear Taylor distribution of energy to the radiators to produce a narrow horizontal beamwidth having very small side lobes. The antenna beam is scannable in azimuth by varying the frequency of the input signal or by periodically varying the phase of a constant frequency input signal at each radiator.
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