Substrate Integrated Waveguide SIW Technology-based Miniaturization and Performance Enhancement of Antennas: A Review
Substrate integrated waveguides (SIW) have gained substantial different kinds of researches, ranging from microwave to optical bands due to their extraordinary properties such as low losses, low costs, small footprints as well as integrating with other types of printed circuit boards (PCB). SIW structures can be utilized to obtain all these advantages readily compared to different kinds of technologies such as conventional waveguides, microstrip transmission lines, coplanar waveguides, etc. The study provides an overview of the conducted studies on the substrate integrated waveguide for (67) articles for the period from 2001 to 2019 with particular emphasis on using SIW technology to realize small footprint metamaterial antennas. The study includes previous research work done on a single antenna and array models using the SIW technique. Thus, the paper focuses only on usages of the SIW in miniaturization of antennas footprints as well as performance enhancement. Different inclusions of unit cells (i.e., slots, split ring resonator SRR, and Complementary-SRR (CSRR) have been integrated into the main body of the SIW to realize the metamaterial properties. Design, modeling, and implementation of the recent SIW components and devices are provided.