Dual-layer 4x4 Butler Matrix for 5G application through Via Optimization

by Mohd Redzwan F.N.; Abd Rahman N.H.; Yamada Y.; Subahir S.; Idrus I.I.; Jizat N.M.; Miswadi N.
Published in ISAP 2024 - International Symposium on Antennas and Propagation (2024)