Modified H Guide for Millimeter and Submillimeter Wavelengths (Short Papers)

A theoretical and experimental investigation is being made of a modified form of H guide as a possible guided wave structure for millimeter and submilliieter wavelengths. The effects of channels in the conducting planes to support a dielectric film has been studied by scaled-up models at 3-cm wavelength. Low losses, even at the shorter wavelengths, are predicted. The channels may be used to filter unwanted higher order modes, and the use of high-permittivity dielectric is suggested to further reduce the guide attenuation.