一种宽频带缝隙型手机天线设计  

Design of wideband slot antenna for mobile phone applications

作　　者：肖霞 宗卫华[1] 魏向阳 黄千媛 XIAO Xia;ZONG Weihua;WEI Xiangyang;HUANG Qianyuan(School of Electronic and Information,Qingdao University,Qingdao Shandong 266071,China;GoerTech INC.,Qingdao Shandong 266071,China)

机构地区：[1]青岛大学电子信息学院,山东青岛266071 [2]歌尔声学,山东青岛266071

出　　处：《太赫兹科学与电子信息学报》2018年第1期105-109,共5页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家自然科学基金资助项目(61501277;61307050);山东省高等学校科技计划资助项目(J14LN86)

摘　　要：针对超薄多频带手机的需要,提出一款新型印刷缝隙型手机天线。天线印刷在0.8 mm厚FR-4电路板上,地面开有2个缝隙,其中1个为矩形,另外1个为矩形与圆形组合形式。馈电结构采用50Ω微带线与一圆形贴片、一矩形带线组合构成倒L状。馈电线的弯折部分在地上的投影落于缝隙的内部,天线在电路板上占用的区域仅限于缝隙内部,保持了天线的小型化。此结构缝隙天线能够达到宽带匹配,测试的-6 d B带宽为0.695~0.805 GHz,1.5~3.2 GHz,4~15 GHz,能够覆盖LTE700,DCS1800,PCS1900,UMTS,LTE2300,LTE2500,全球定位系统(GPS),无线局域网(WLAN)以及超宽带通信(UWB)的高频段。A novel printed slot antenna is presented to meet the requirement of low profile and multiband for a mobile phone.The antenna is printed on a 0.8 mm thick FR-4 substrate with two slots etched on the ground plane.One of the slots has a rectangular shape and the other has a hybrid shape composed of a rectangle and a circle.The antenna is fed by a 50Ωmicrostrip connected to a circular patch and a rectangular strip,forming an inverted-L shape.The footprint of the folded portion of the feeding structure on the ground locates inside the slot region which results in a compact antenna size on the PCB board.The proposed antenna has a wideband impedance matching with measured-6 dB bandwidth of 0.695-0.805 GHz,1.5-3.2 GHz,and 4-15 GHz covering LTE700,DCS1800,PCS1900,UMTS,LTE2300,LTE2500,Global Positioning System(GPS),Wireless Local Area Network(WLAN),and Ultra-Wideband(UWB)upper band.

关 键 词：手机天线 缝隙天线 宽频带天线 多频带天线 贴片天线 

分 类 号：TN61[电子电信—电路与系统]