Abstract
The main theme of the 2024 Mobile World Congress (MWC), held annually in Barcelona, Spain, is ‘5G and Beyond.’ Extensive research and activity focus on 6G (IMT-2030) technology, which is expected to become the core infrastructure of the mobile industry by 2030, representing the future of wireless communications. This necessitates the support of more wireless frequency bands for terminals to be compatible with the upcoming Beyond 5G (B5G) and 6G technologies. The antenna mounting space for B5G wireless communication, with various form factors for hardware, such as smartphones, smartwatches, and smart rings, is limited, as these devices become increasingly slimmer and lighter. Several methods have been studied to reduce antenna size while maintaining performance in a limited space. Representative examples include integrated-structure, metamaterial, and magnetodielectric antennas. In this study, it is analyzed for the effect of the resonance frequency characteristics of antennas based on the arrangement direction of the anisotropic material in the limited antenna mounting space of communication terminals. Aiming to reduce antenna size in the B5G era, it is proposed for the necessity of optimal design that focuses on the axial direction of the magneto-dielectric materials when designing antennas using anisotropic materials for antenna miniaturization.
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