Design of Substrate Integrated Waveguide (SIW) Slot Antenna for Millimeter-wave 5G Application

The design and simulation of compact leaky wave antenna based on substrate integrated waveguide (SIW) using slot section technique is presented in this paper. The proposed antenna is designed and analyzed using full wave electromagnetic simulation tool based on Finite Integration Techniques (FIT). The designed antenna operates at 38 GHz millimeter wave (mm-wave) frequency bands, which are allocated by international Telecommunications Union (ITU) for 5G application. The radiating patch is printed on a Rogers's RT 5880 (lossy) substrate of dimensions
${7.5\ \mathrm{x}\ 27} {\mathrm{x}0.254\text{mm}^{3}}$
, with a relative permittivity of 2.2 and loss tangent of 0.0009. The antenna shows the impedance bandwidth of 230 MHz (38 GHz – 38.23 GHz). Radiation efficiency is 82.7% with a directive gain of 6.68 dBi at 38 GHz.