Design and fabrication of two-port three-beam switched beam antenna array for 60 GHz communication

摘要

This article presents a novel, low-cost, beam-switchable $2 imes 10$2x10 antenna array system operating at 60 GHz. This antenna system is constructed of two rows of Chebyshev-tapered microstrip antenna arrays. Each row is a 10 element series-fed array which are fed by a 90 degrees coupler. The designed antenna array has only two input ports, but it is capable of generating three switchable beams. This antenna system can spatially scan 90 degrees with at least -5 dB normalised gain using only one SPDT switch and a single transceiver. The maximum gain realised by the system was measured as 16.4 dBi and the bandwidth (BW) was >1 GHz. The features of the proposed antenna system make it applicable to do mmWave research such as beamforming algorithms and channel sounding, and to use in handsets for 5G communication.