CPW-fed triple high rejection notched UWB and X-band antenna on silicon for imaging and wireless applications

In this article, compact coplanar waveguide feed antenna covering ultra-wideband and X-band signals (2.98-13.34 GHz) is presented. Antenna also offers triple-notched band elimination (Wireless Interoperability for Microwave Access: 3.40-3.95 GHz, Wireless Local Area Network: 4.50-6.34 GHz and Downlink Satellite System: 7.11-7.802 GHz) which is due to insertion of stub and etching of slots. Antenna is fabricated and characterised on silicon for imaging and wireless applications having a fractional bandwidth of 133%. The antenna offers gain, radiation efficiency and group delay between 3.26 and 8.00 dBi, 84% and 92% and <=+/- 1.0 ns, respectively, for the entire bandwidth. Isolation of antenna in face-to-face and side-to-side orientations is <-25 dB with very less distortion presented in the transmission and reception of the signal. The radiations emitted by the antenna are observed as a dipole-like pattern in E-plane and omnidirectional in H-plane.