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CPW-fed band-notch ultra-wideband antenna with Cyrillic Ghe-shaped parasitic slit

R. AZIM1,* , M. S. MIA1, A. K. M. ARIFUL HAQUE SIDDIQUE1, M. MOTTAHIR ALAM2, M. TARIQUL ISLAM3

Affiliation

  1. Department of Physics, University of Chittagong, Chattogram 4331, Bangladesh
  2. Department of Electrical and Computer Engineering, Faculty of Engineering, King Abdulaziz, Jeddah 21589, Saudi Arabia
  3. Department of Electrical, Electronic and Systems Engineering, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia

Abstract

A CPW-fed ultra-wideband antenna with a notched band for WLAN is presented in this paper. A hexagonal patch, a feedline, and a pair of coplanar grounds constitute the antenna on the plane of a substrate. A Cyrillic Ghe-shaped parasitic slit is added within the inverted U-shaped ground to filter out the WLAN band. The theoretical and measured results confirm that the patch matched well with grounds that helped the antenna achieve the UWB working band. On the other hand, the filter element helped the design to generate a notched band of 5.05 – 5.86 GHz. The antenna achieved good gain and efficiency and exhibited flat group delay except at the notch band. Moreover, the engineered antenna demonstrates nearly omnidirectional radiation patterns. To exhibit the perspective of the planned antenna, it is compared to the formerly reported UWB antennas with a WLAN notch band..

Keywords

UWB antenna, Notch band, WLAN, Filter element, Wireless communication.

Submitted at: Dec. 19, 2023
Accepted at: June 3, 2024

Citation

R. AZIM, M. S. MIA, A. K. M. ARIFUL HAQUE SIDDIQUE, M. MOTTAHIR ALAM, M. TARIQUL ISLAM, CPW-fed band-notch ultra-wideband antenna with Cyrillic Ghe-shaped parasitic slit, Journal of Optoelectronics and Advanced Materials Vol. 26, Iss. 5-6, pp. 228-235 (2024)