Abstract
In this communication, a novel microstrip phased array with dual-polarized and wide-angle scanning in the 2-D space is proposed. The element antenna consists of a mushroom-shaped patch and two circular patches. Each circular patch is connected with one feeding port. The mushroom-shaped patch is excited via capacitive coupling through the gaps between the mushroom-shaped patch and the circular patch. The zeroth-order resonance and TM010 mode resonance are simultaneously generated in the mushroom-shaped patch. The 3 dB beamwidth of the element antenna in the 2-D space is in the range between 110° and 125°. One $6 \times 6$ phased array based on the antenna element is designed, fabricated, and measured. The phased array shows the dual-polarized wide-angle beam scanning in a range of ±66° in both $x {z}$ and $y {z}$ planes with the scan loss of 3.5 dB.
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