An array of slotted waveguide antennas in air-filled substrate integrated waveguide for 5G applications.

Substrate Integrated Waveguide (SIW) is one of the increasing interests in the field of study of mm-wave applications since 1998. Due to its low loss, planner nature, high integration capability and high compactness, SIW has been widely used to develop the components and circuits operating in the microwave and millimeter-wave region. In this work, 1×4 array of slotted waveguide antennas for 5th generation (5G) applications in frequency range of 27-28 GHz is designed and accurately modeled; their performances are simulated and analyzed with the Ansys’ High Frequency Structure Simulator (HFSS). The air-filled design has been proposed to achieve high radiation efficiency and gain by reducing the dielectric inside the cavity. Additionally, it also has been integrated with Tee-junctions, bends and so on for the overall simulation of the array. As well as these designs are cascaded to form a 5-port circuit to calculate excitation of slotted SIW antenna by using AWR microwave office. In this work scattering parameters are mainly used to analyze antennas high frequency performance for 5G applications. Gain plot and radiation pattern are also analyzed to make sure its accurate performance. All in all, in this thesis work, slotted waveguide antennas in air-filled substrate integrated waveguide is done and high gain and good radiation pattern is achieved with high power handling capabilities and slightly worse bandwidth, but still it is a good solution.