IEEE Access (Jan 2022)

Review on Substrate Integrated Waveguide Cavity Backed Slot Antennas

  • Elagandula Aparna,
  • Gopi Ram,
  • G. Arun Kumar

DOI
https://doi.org/10.1109/ACCESS.2022.3231984
Journal volume & issue
Vol. 10
pp. 133504 – 133525

Abstract

Read online

Substrate Integrated Waveguide Cavity Backed Slot Antennas (SIW CBSA) are emerging candidates for planar Integrated Circuit (IC) technology in Millimetre-wave (MMW) bands. This peculiar antenna holds the advantage of conventional metallic cavity-backed antennas, with high gain, high front-to-back ratio, and low cross-polarization level. SIW CBSA structures are the best option for planar integration with a low profile and low fabrication cost in the design of MMW systems. This paper discusses various forms of SIW CBSA structures, their operating mechanism, and methods of improving their performance in terms of gain, bandwidth, size reduction, beamforming capability, and multiple bands of operation. From this discussion, we can select the antenna with the required characteristics of gain, dual-band, and dual-polarization suited for present and future-generation applications.

Keywords