This communication introduces a novel antenna miniaturization approach by strategically loading ferrites in distinct near-field regions. By identifying electric (E)- and magnetic (H)-field dominant zones in the antenna near-field, region-specific ferrites are strategically selected: high permittivity (εr) materials for E-field zones and high permeability (μr) materials for H-field zones. This strategy maximizes miniaturization while minimizing losses and the increase in antenna weight resulting from ferrite loading. To validate this method, a bent inverted-F antenna was designed and measured. The experimental results demonstrate that loading ferrites in E-field regions reduces the operating frequency from 2555–2620 MHz to 2230–2293 MHz with 68% efficiency, 20% higher than traditional full-coverage loading. Equivalent circuit analysis further reveals that selective loading increases capacitance/inductance for miniaturization while suppressing losses. This work establishes a new paradigm for a functional-material-based antenna design and offers a new research route for the fabrication of functional materials, aligning with 5G/6G demands for compact, integrated, low-loss systems.
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