A new ridge trough rectangular waveguide loaded with a horizontal "cross" r
idge is proposed and analyzed using the finite-element method. Analysis pre
dicts a dramatic increase in the fundamental-mode cutoff wavelength perform
ance and high bandwidth. The waveguide is attractive for emerging microwave
and millimeter-wave applications requiring highly integrated, compact stru
ctures. (C) 2001 John Wiley & Sons, Inc.