基于NiCuZn铁氧体的小型化T-DMB天线  

Miniaturized T-DMB antenna based on NiCuZn ferrie

作　　者：贾洪帅[1] 刘卫沪[1] 颜铄清[2] 葛晨辰 龚荣洲[1] 冯则坤[1] 王鲜[1] 聂彦[1] JIA Hong-shuai;LIU Wei-hu;YAN Shuo-qing;GE Chen-chen;GONG Rong-zhou;FENG Ze-kun;WANG Xian;NIE Yan(School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China;School of Physics and Electronics, Central South University, Changsha 410083, China)

机构地区：[1]华中科技大学光学与电子信息学院,湖北武汉430074 [2]中南大学物理与电子学院,湖南长沙410083

出　　处：《磁性材料及器件》2017年第4期15-18,22,共5页Journal of Magnetic Materials and Devices

摘　　要：采用传统的固相反应法制得了宽频段低损耗的NiCuZn铁氧体材料,研究了Co_2O_3掺杂对NiCuZn铁氧体磁电特性的影响。研究表明,当Co_2O_3掺杂量为1.0 wt%时,该铁氧体在200 MHz下的磁导率和介电常数约为14,磁损耗和介电损耗角正切分别为0.017和0.012。基于此材料设计了一种小型化地面数字多媒体广播(T-MDB)天线。该天线具有结构紧凑、损耗低、带宽宽等优良性能,其辐射模式接近全向,中心频率(195 MHz)的峰值增益达到-0.03 dB,是一种适用于移动手持终端的小型化天线。A low-loss NiCuZn ferrtie(Ni0.78Cu0.20Zn0.02Fe1.96O3.94)with broad applicable band has been prepared by conventional solid-state reaction method.The effects of Co2O3additive on the magnetic and dielectric properties of NiCuZn ferrite were investigated.The results show that the ferrite with1.0wt%Co2O3doping possesses permeability and permittivity of around14,as well as magnetic and dielectric loss tangent of0.017and0.012at200MHz.A miniaturized T-DMB antenna was designed based on this material,which has good performance such as compact size,low loss and wide bandwidth.The radiation pattern is nearly omnidirectional,and maximum gain of-0.03dB was attained at center frequency(195MHz).The miniaturized antenna is applicable for mobile handset.

关 键 词：NICUZN铁氧体 Co2O3掺杂 磁介电材料 小型化T-DMB天线 移动手持终端 

分 类 号：TM277[一般工业技术—材料科学与工程]