Circular Polarization GPS Patch Antennas with Self-biased Magnetic Films

摘要：

Magneto-dielectric substrates with thin magnetic films show great potential in realizing electrically small tunable antennas with improved directivity and higher bandwidth than those realized on dielectric substrates. This paper introduces self-biased magnetic films as a practical means to tune a patch antenna by loading a commercially available dielectric substrate. Novel antenna designs with self-biased metallic magnetic films and ferrite films were investigated. These magnetic patch antennas have improved the axial ratio from 1.57 dB to 0.97 dB with respect to the central frequency ranging from 1.575 GHz to 1.562 GHz, a large radiation frequency tunability of about 40％ to 80％ of the -10 dB bandwidth, and a significantly enhanced directivity.

作者: G.M.Yang A.Daigle N.X.Sun K.Naishadham

作者单位: Center for Microwave Magnetic Materials and Integrated Circuits Department of Electrical and Compute RF Communications Group,Draper Laboratory,Cambridge,MA 02139,USA

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)

会议地点: 杭州

会议语种:英文

页码: 1-5

在线出版日期: 2008-03-24（万方平台首次上网日期，不代表论文的发表时间）