Lotus Shaped Printed Antenna For UWB Applications

The paper presents one new-type of printed antenna which operates over the frequency ranges from 1.7 GHz to 18.7 GHz. The structure is realized by properly aligning three leaf-shaped patches and the composite structure resembles like a planar lotus-shaped geometry. Further a circular slot is introduced inside the proposed lotus-shaped antenna geometry in order to improve the performance of the antenna in terms of gain and operational bandwidth. It is excited by the conventional type co planer waveguide (CPW). The simulated peak realized gain obtained is about 4.8 dBi. The proposed antenna can be used as an electromagnetic (EM) sensor for Ultrawideband (UWB) and Cognitive Radio applications for various bands like C, X, Ku.