AlGaN/GaN‐based SAW delay‐line oscillators

Abstract

used to tune the applicable bandgap frequency without compromising the bandgap bandwidth. CONCLUSIONSThe bandgap characteristics of EBG structures with and without shorting vias were compared, and parametric study results on a wideband UC-PBG structure were presented. For the EBG structures without shorting vias, it was found that the bandgap bandwidth increases when the substrate thickness is reduced. This behavior is different from that of the bandgap bandwidth of the EBG structure with shorting vias. This could be an advantage in MMIC applications, since a wide bandgap bandwidth could be obtained even for thin substrates.