</table>
The multilayer structure is parameterized with the following design variables:listed in the table below. Of these variables, only the open stub length is changed to 18.5mm and rest of them retain their original value.
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The figure below shows the planar mesh of the sub-array. The patch and slot elements are discretized with a mesh density of 30 cells per effective wavelength, while the corporate feed network requires a higher mesh density of 50 cells per effective wavelength due to the narrow line hosting the lumped resistors.
<table>
<tr>