Design and Performance Evaluation of a 4*4 Butler Matrix Feeding Network Antennas with 26 GHz. - Siwar Louati; Mohamed Ould-Elhassen; Fethi Choubani (ICMCS, 2018)

Design of 28 GHz Switched Beemforming Antenna System Based on 4×4 Butler Matrix for 5G Applications. - Siwar Louati; Larbi Talbi; Mohamed Ould-Elhassen (IoTSMS, 2018)