Nanowire-based 3-D transmission-line transformer for millimeter-wave applications - Frutuoso, Tadeu M; Lé, João Eduardo Gentil; Berthoud, Yoann; Pinheiro, Julio M; Margalef-Rovira, Marc; Ferrari, Philippe; Rehder, Gustavo Pamplona; Serrano, Ariana Maria da Conceição Lacorte Caniato (IEEE Microwave and Wireless Components Letters, 2022)