Abstract
Magnetic materials are anticipated to address the bandwidth and size limitations of dielectric resonant antennas (DRAs) to fulfill the application demands of 5G base station antennas. The present study focuses on the development of a novel Co2Z/LFO-LZT magnetic composite with exceptional microwave dielectric-magnetic properties through a hybrid ceramic process. The proposed ceramic achieves uniform dispersion of spinel magnetic nanocrystals at the grain boundary of Co2Z, resulting in the formation of a particular micro-concrete structure that significantly enhances ceramic densification and reduces magnetic-dielectric loss. The electromagnetic parameters of the ceramic optimized and used for antenna design are εr = 11; μr = 2; tanδε = 0.001; tanδμ = 0.08 at 5 GHz. A high-performance Magnetodielectric Resonant Antenna (MDRA) was designed, which exhibits a low profile of 11.4% λ0 at 5 GHz, and broadband performance covering 19.0% and 11.8% bandwidth at 5 and 8 GHz.
Published Version
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