Multi-frequency terahertz square microstrip patch antenna on two-layer photonic crystal substrates

In this paper, two dimensional photonic crystals working at terahertz frequency is investigated. A multi-frequency terahertz square microstrip patch antenna on two-layer photonic crystal substrates is presented and Computer Simulation Technology Microwave Studio is used to simulate its electromagnetic wave transmission properties. The proposed antenna can work at five frequency point's scope in which the photonic crystals are used to enhance the gain, directivity, bandwidth, and radiation efficiency of the proposed antenna. The corresponding enhancements are similar to 17 dB, similar to 17 dBi, similar to 39% and similar to 90% at terahertz frequency regions, respectively.