Discussion and Demonstration of RF-MEMS Attenuators Design Concepts and Modules for Advanced Beamforming in the Beyond-5G and 6G Scenario - Part 1. - Girolamo Tagliapietra; Flavio Giacomozzi; Massimiliano Michelini; Romolo Marcelli; Giovanni Maria Sardi; Jacopo Iannacci (Sensors, 2024)