[1Ip01-08] Low-dimensional Material/Nanostructure/Nanomaterial (LD/NS/NM)

[1Ip08] High efficient graphene-based antenna for monoliinthically integrating with transistors

*Hirokazu Fukidome¹, Tomoya Ishida¹, Issei Watanabe² (1. RIEC, Tohoku University, 2. NICT)

The realization of Society 5.0 will threaten global environment because Society 5.0 needs 70-trillion nex-generation wireless communication (Beyond 5G) devices. Therefore, we should create Beyond 5G devices with low-environmental cost. We proposed a novel monolithically-integrated devices on SiC consisting of graphene-based antenna and GaN-based high electron mobility transistor (GaN-HEMT) (Patent application number 2021-207486). As the first step, we are developing an antenna using graphene grown on SiC for the purpose of the monolithic integration. As a result, we succeeded for the first time in developing graphene antenna on SiC resonating at 40.7 GHz with the quite a high transmission power efficiency (97.19%). Our antenna is more efficient by 7%, compared to that in the previous report. Our work demonstrates the capability of the graphene antenna on SiC as the highly efficient antenna for Beyond 5G.