Abstract
The design process of the single radiating element for a digital terrestrial television based passive radar antenna array is presented. Design requirements were analyzed considering the specific application, and patch antenna technology was finally selected. The complete design process is presented for a single element operating at 700 MHz with a fractional bandwidth close to 19%. The final solution is a E shaped patch, using air gap as substrate and coaxial feeding. Antenna performance parameters were simulated using ANSYS HFSS. A prototype was built and characterized in an anechoic chamber. Measurements proved the correct performance of the antenna for a passive bistatic radar system.
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