Abstract
A super wideband (SWB) monopole antenna with a low profile and simple geometry covering a bandwidth of 3 GHz to 30 GHz has been proposed. The antenna is consisting of a simple circular patch with truncated square loaded in the circular patch for circular polarization (CP). The ground surface of the antenna is elliptical in shape with an embedded rectangular notch under the tapered feed line for the excitation of higher modes, consequently, obtaining a wide return loss bandwidth. The designed antenna has the advantage of compact size and dual polarization as CP is realized at 5.5 GHz. The total size of the designed SWB antenna is $36 \times 27 \times 1.6$ mm$^{\mathbf {3}}$.
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