Martinez, Leticia; Belenguer, Angel; Boria Esbert, Vicente Enrique; Borja, Alejandro L.(Institute of Electrical and Electronics Engineers, 2019-05)
[EN] This letter presents a novel compact folded bandpass filter in empty substrate integrated coaxial line (ESICL) technology. To obtain these compact filters, the inverters are modified to provide a 180 degrees bend when ...