CPW-fed Circular Patch Antenna with Rectangular Slot-Loaded DGS for Wideband Application

Authors

  • Mohamad Faiz Mohamed Omar Universiti Teknologi Malaysia
  • Asrulnizam Abd Manaf
  • Prof. Dr. Mohd Fadzil Ain
  • Prof. Dr. Sharul Kamal Abdul Rahim Wireless Communication Centre (WCC), Faculty of Electrical Engineering, Universiti Teknologi Malaysia, UTM, Skudai, Johor 81310, Malaysia

DOI:

https://doi.org/10.11113/elektrika.v24n1.590

Keywords:

Coplanar waveguide, wideband, FR4 board, slot-loaded DGS

Abstract

In this paper, a wideband circular patch antenna incorporated with a rectangular slot-loaded defective ground structure (DGS) is presented, meant for n77, n78, n79, and C band applications. The circular radiation patch of the proposed antenna is fed by a coplanar waveguide (CPW) mounted on a FR4 PCB board. At the bottom side of the board, a rectangular slot loaded on the DGS is added to establish good 50 Ω impedance matching and improve the antenna impedance bandwidth. This wideband antenna excites TM11 and higher-order TM21 modes at two distinct frequencies (3.3 GHz and 6.0 GHz). This circular patch antenna exhibits wideband behaviour with a fractional bandwidth > 90%, and an average efficiency of 76%.

Downloads

Published

2025-04-29

How to Cite

Mohamed Omar, M. F., Asrulnizam Abd Manaf, Ain, M. F., & Abdul Rahim, S. K. (2025). CPW-fed Circular Patch Antenna with Rectangular Slot-Loaded DGS for Wideband Application. ELEKTRIKA- Journal of Electrical Engineering, 24(1), 7–13. https://doi.org/10.11113/elektrika.v24n1.590

Issue

Vol. 24 No. 1 (2025): April

Section

Articles

License

Copyright of articles that appear in Elektrika belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.