Planar resonant series-fed arrays

Planar resonant series-fed arrays

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A new approach for designing two-dimensional series-fed arrays is proposed in which each radiating element is connected in series to its adjacent elements. The power is injected into the central element and as it travels outwards excites other array elements, resulting in a two-dimensional illumination of the array aperture. At the operating frequency, the interconnecting line segments and radiating patches are designed to be resonant. Thus, provided they are identical in size, their resonances interfere and generate a global resonance over the aperture that causes equal radiation from all the patches. Shaping the radiation pattern is also possible by modifying the patch dimensions at appropriate locations in the array. Consequently, the proposed two-dimensional arrays represent a class of resonant series-fed arrays that are straightforward to feed and useful for illuminating medium-size arrays.


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