Abstract
Modern low-profile ultra-wideband antenna arrays are tightly coupled dipole array (TCDA). The paper presents a model of a low-profile dual-polarized of planar-type TCDA for operation in the 4÷12 GHz band with scanning in the sector of angles ±30° in two principal planes. In contradistinction to the well-known TCDAs, the proposed array is distinguished by its simplicity of design, the absence of balancing transformers, the extended period of 12x12mm, and the small height of 5.63mm (including the thickness of the upper homogeneous non-perforated matching layers of 1.67mm and the substrate layers of 3.968mm. The selected array period allows taking into account the special design requirements of the feed network for the array elements. The broadband of the TCDA (at VSWR<3.6) is achieved using the upper matching layers. These layers also serve as the radome for the array.
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