1. A dual-polarization-switched beam patch antenna array for millimeter-wave applications;Klionovski;IEEe Trans. Antennas. Propag.,2019
2. Design of a 4× 8 Substrate integrated waveguide butler matrix with sidelobe suppression at 60 GHz;Mehrzad;Internat. J. Informat. Commun. Techn. Res.,2021
3. A new design and implementation of 4×4 butler matrix for Ka band applications;Aourik,2021
4. Dual-circularly polarized 60 GHZ beam-steerable antenna array with 8× 8 butler matrix;Park;Appl. Sci.,2020
5. M.P. Abegaonkar, & V.M. Pandharipande, Millimeter wave switched beam rectangular loop dipole antenna array using a 4× 4 butler matrix.