Abstract: A wide-angle end-fire metantenna fed by a novel dual-layer substrate-integrated waveguide (SIW) 9×9 Butler Matrix (BM) suitable for millimeter-wave applications is proposed in this paper. By ...
UK: After a heavily delayed production process, the first of 33 Hitachi Rail Class 810 bi-mode trains entered service with East Midlands Railway on December 3 2025. Tony Miles reports from the fleet ...