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

ABSTRACT

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.

KEYWORDS:

• Silicon
• high rejection
• gain
• radiation efficiency
• fractional bandwidth

Acknowledgments

The authors are thankful to Mr K.R. Jha, Advance Microwave Antenna Testing Laboratory (URL: delhi.gov.in/wps/wcm/connect/doit_gbpec/GBPEC/Home/List+of+Labs), GB Pant Engineering College, Delhi. for providing Antenna Measurement Facility. The authors are also thankful to Dr Raman Kapoor for language correction.

Disclosure statement

No potential conflict of interest was reported by the authors.