Analysis, Design and Fabrication of a Square Slot Loaded (SSL) Millimeter-Wave Patch Antenna Array for 5G Applications

摘要

A new compact 1x4 microstrip patch antenna array design for future 5G applications is presented in this paper. The proposed antenna array consists of square slot loaded with four radiating patch elements. The corporate feed network has been implemented for the excitation of the array. The feed line is connected to the square slot patch through a quarter-wave transformer matching network. The proposed array is designed on an FR-4 substrate with a dielectric constant of 4.4, thickness of 1.6mm and loss tangent (tan delta) of 0.02. It has a compact dimension of 9.590x 17.802x 1.6 mm(3). The proposed structure has been designed and simulated by using commercially available HFSS software. The simulated results (reflection coefficient, gain, efficiency, radiation pattern) are verified through the measurement process to confirm the validity of the design concept. The measurement results are in good agreement with the simulated results. The proposed structure resonates at 38.1GHz with a -10dB impedance bandwidth of about 3700MHz (36.5GHz to 40.2GHz). The reflection coefficient at 38.1GHz is -34dB, with a maximum gain of 7.81dB. The proposed square slot loaded patch antenna array is very promising for 5G communications at 38GHz band (37-40GHz).