Two-Port Dual-Band Microstrip Square-Ring Antenna for Radar Applications
Jan Puskely (TU Delft - Microwave Sensing, Signals & Systems)
Alexander G. Yarovoy (TU Delft - Microwave Sensing, Signals & Systems)
A. G. Roederer (TU Delft - Microwave Sensing, Signals & Systems)
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Abstract
A novel two-port, dual-band square-ring microstrip antenna element for wide-angle scanning planar phased array is proposed. The two ports are used to operate the antenna array over the L and S radar bands. Microstrip square-ring radiators are chosen due to their smaller dimensions compared to the conventional microstrip patch. To extend operational bandwidth, the square rings placed into a single layer are fed by small coupling patches. The antenna elements demonstrate consistent radiation patterns and sufficient bandwidths in both operational bands. Due to its dimensions, the element is well-suited for application to wide-scan phased arrays.