Low-loss Z-type hexaferrite for microwave antenna miniaturization application
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℃ had a loss tanδμ 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 tanδμ for microwave antenna applications.
Antenna miniaturization Co2Z Iron deficiency
C. C. Xiang Y. Nie Z. K. Feng ZH. Gong Zhou Yuan
Department of Electronic Science & Technology, Huazhong University of Science & Technology,Wuhan, 43 Department of Electronic Science & Technology, Huazhong University of Science & Technology, Wuhan, 4
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
309-314
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）