Superconducting dual-mode dual-stage cross-slotted filters

This Letter reports on the design and realization of HTS dual-mode cross-slotted filters presenting a more compact size if compared with the traditional dual-mode patch filters. Dual-stage filters operating in C band and presenting Chebyshev or quasi-elliptical responses have been realized and tested by using YBa2Cu3O7-x (YBCO) films. (C) 2002 Wiley Periodicals, Inc.