Miniaturized Patch Antennas with Ferrite/Dielectric/Ferrite Magnetodielectric Sandwich Substrate
Magneto-dielectric substrates with thin magnetic films show great potential in realizing electrically small antennas with enhanced bandwidth,improved directivity,and high efficiency.This is the first time to introduce 10-μm thick self-biased NiCo-ferrite films as a practical means to tune a patch antenna by loading Ferrite/Rogers/Ferrite(F/R/F)sandwich structures.The central resonant frequency of the base line patch antenna with composite of Rogers and alumina substrate is 2460MHz with a bandwidth of 42 MHz.However,with F/R/F loading of the alumina substrate,this frequency is down shifted to 2380MHz with a greatly improved bandwidth of 74 MHz.In addition,the gain of the magnetic antenna with F/R/F sandwich structure is enhanced by 2.4 dB over the unloaded antenna.
Guo-Min Yang Ogheneyunume Obi Ming Liu Nian X.Sun
Key Laboratory of Wave Scattering and Remote Sensing Information Department of Communication Science Department of Electrical and Computer Engineering Northeastern University,Boston,MA 02115,USA
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
903-906
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）