Substrate integrated NRD (SINRD) guide in high dielectric constant substrate for millimetre wave circuits and systems

The use of high dielectric constant substrate such as alumina is proposed and investigated for the realization of substrate integrated non-radiating dielectric (SINRD) guide. This work demonstrates that electromagnetic bandgap (EBG) phenomena are very much pronounced in this case, which fundamentally limits the design of air hole patterns. A prototype of 94GHz alumina SINRD guide circuit with back-to-back WR10 transitions is designed and realized for the first time. Measured results of this circuit on this basis of the proposed technology are presented and discussed.