Dual Bands Microstrip Substrate Integrated Waveguide (SIW) Antenna for K-band Applications

Authors

  • Rand Muwafaq Hadi Department of Communications Technical Engineering, Al-Najaf Technical Engineering College / Najaf, Al-Furat Al-Awsat Technical University ATU, Najaf,Iraq Author
  • Faris Mohammed Ali Al-Furat Al-Awsat Technical University ATU, Najaf,Iraq Author
  • Ghufran Mahdi Hatem Department of Communications Technical Engineering, Al-Najaf Technical Engineering College / Najaf, Al-Furat Al-Awsat Technical University ATU, Najaf,Iraq Author

Keywords:

dual bands, Microstrip, substrate integrated waveguide SIW, K-band

Abstract

A dual bands circular slot based on a substrate integrated waveguide (SIW) antenna is presented in this paper for K-band applications. The proposed antenna structure is consisting of a microstrip antenna with two circular-shape slots etched on the top of radiation plane and located one on top of the other for bandwidth enhancement. This antenna has been printed on an FR-4 substrate with a dielectric constant 4.3 of and thickness of 1.5 mm. The optimized antenna resonates at 22.45 GHZ and 25GHZ with a fractional bandwidth of 1.20 GHZ about (5.353 %) and 1.50 GHZ about (5.994 %), respectively. The achieved peak gain is about 6.14 dB and 4.72 dB over the operating frequencies, respectively, this makes it suitable for K applications with good matching and return loss characteristics. Design model and performance evaluation of a proposed antenna has been executed by EM simulator, CST Microwave Studio.

Downloads

Published

2025-03-17

Issue

Vol. 2 No. 1 (2023)

Section

Articles