Microwave Dielectric Materials and Devices

Dear Colleagues,

This Special Issue focuses on state-of-the-art research in microwave dielectric materials and their functional device applications. It aims to bridge cutting-edge material innovation and practical device engineering, and foster interdisciplinary exchange between materials science, electromagnetics and microwave technology communities.

Core research themes include compositionally tailored microwave dielectric materials, low-temperature co-fired ceramic (LTCC) materials and processes, dielectric-based microwave components (resonators, filters, antennas) and advanced high-frequency characterization methods. Key unresolved challenges include the intrinsic trade-off between high permittivity, low loss and temperature stability, extrinsic interface losses at millimeter-wave bands, LTCC electrode compatibility and reliability in miniaturized integrated devices.

This issue particularly encourages emerging topics such as data-driven dielectric materials discovery, tunable/reconfigurable dielectrics, dielectric metamaterials and heterogeneous integration with wide-bandgap semiconductors. Future perspectives will be discussed on ultra-wideband low-loss dielectrics for 6G and terahertz systems and the co-design of materials, devices and sustainable manufacturing.

Dr. Diming Xu
Dr. Fangfang Wu
Guest Editors

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