An Extensive Review on SISL-based Antennas with Hexagonal Shaped SISL-Antenna

Substrate-integrated suspended line (SISL) is a quasi-planar, multi-layered platform for designing antennas with embedded cavities. The SISL antenna shows good radiation performance, low loss, and self-packaging characteristics, which are more suitable for modern communication systems. A SISL-based hexagonal patch antenna, different types of SISL-based antennas in the literature, their advantages, and their performance are discussed in this paper.