Low-Loss Z-Type Hexaferrite for Microwave Antenna Miniaturization Application

Abstract:

Magnetic and dielectric properties of conventional ceramics processed Ba₃Co₂Fe₂₄O₄₁ hexaferrite were investigated for microwave antenna miniaturization. Iron deficiency and optimizations of technology conditions have been used to control the high frequency properties of Co₂Z materials. The properties of the materials were characterized by SEM, XRD, Vector Network Analyzer, and so on. The experimental results showed that Z-phase was the main phase with traces of Y-phases for all the tested samples and the resonance frequencies were above 2GHz. 3BaO·2CoO·10.4Fe₂O₃ samples sintered at 1050°C had a loss tanδ_μ of 0.07 with the permeability of 7.28 at 1GHz and the miniaturization factor n reached a value up to 10 under 2GHz. It was found that Z-type hexaferrites with iron deficiency and low sintering temperatures met the demands of low-loss tanδ_μ for microwave antenna applications.

• Periodical: Materials Science Forum (Volume 687)
• Pages: 309-314
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.687.309
• Online since: June 2011
• Authors: C. C. Xiang, Yan Nie, Ze Kun Feng, Rong Zhou Gong, Zhou Yuan
• Keywords: Antenna Miniaturization, CO₂Z, Iron Deficiency

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