Abstract
A conventional grid array antenna (GAA) composes of wire radiation elements and wire feed elements, both backed by a conducting plate. This chapter presents a novel GAA from the perspective of realizing a beam‐scanning antenna. The radiation elements for this GAA are bent with angle 2α forming a structure with numerous rhombic cells. This GAA is referred to as a rhombic grid array antenna (R‐GAA). The chapter shows that the gain for the R‐GAA has less variation with frequency than the gain for the conventional GAA over the band of interest. It considers the analysis that is performed using the method of moments, where the ground plane (GP) is assumed to be of infinite extent. The chapter shows the frequency response of the gain in the beam direction. Across a frequency range, the gain for the R‐GAA with bent radiation elements has less variation than that for a conventional GAA with straight radiation elements.
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