Abstract
This paper describes the design of a split ring resonator-based conformal antenna for Earth coverage spaceborne applications. To have a reduction in antenna size without degradation in the performance, two design techniques are included in the antenna design. First, a rectangular slot is etched from the circular radiating patch. Secondly, with a partial ground plane in the antenna design, a circular split ring resonator has been engraved. The substrate used for the projected antenna design is a flexible Rogers substrate (RO3006) having a relative permittivity of 6.15 and a thickness of 1.27 mm. The overall antenna size is 20 mm × 15 mm × 1.27 mm. Without conformal structure, the designed antenna provided a wide frequency of operation from 4.73 to 6.12 GHz, a peak gain of 1.9 dBi, and a radiation efficiency of 99.8 percent. The patch design is wrapped over a cylinder having a 10 mm radius along the y-axis to obtain the bending structure. The designed conformal antenna has an operating frequency range from 4.54 to 5.91 GHz. For Earth coverage applications and aircraft applications, the designed antenna can be used.
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