摘要
提出了一种新型频率可重构的手机天线,尺寸为43mm×9mm×3mm.该天线由曲折馈电枝节、耦合枝节,以及多路射频开关(RF-Switch)组成.通过RF-Switch接入不同的电感改变天线的感抗值和带线的有效电长度,在低频段得到了四种不同的工作状态,天线的低频带宽显著增加.研究结果表明:所设计天线能够很好地覆盖长期演进(Long Term Evolution,LTE)、无线广域网(Wireless Wide Area Network,WWAN)八个频带且频段内回波损耗小于-6dB.实测表明天线具有良好的辐射效率和辐射增益,能够实现全向覆盖,具有很好的应用前景.
A novel frequency reconfigurable mobile phone antenna of 43 mm×9 mm×3 mm in size is proposed. The proposed antenna consists of meander feeding strip, coupling strip and multichannel RF-Switch. To achieve the resonant modes of lower band among four different working states, the RF-Switch is used to change the inductance value and the effective electrical length of the feed line. The lower band bandwidth of the antenna is expanded obviously. The research results show that long term evolution (LTE) and wireless wide area network (WWAN) can be covered by the proposed antenna with the return loss better than 6 dB. The proposed antenna was fabricated and measured, good performances of the radiation efficiency, antenna gain and radiation patterns are obtained. It has the good prospects for the applications. Copyright © 2015 by Editorial Department of Chinese Journal of Radio Science
出处
《电波科学学报》
EI
CSCD
北大核心
2015年第6期1170-1174,1181,共6页
Chinese Journal of Radio Science
基金
国家自然科学基金(No.61172020
No.61401003)
高等学校博士学科点专项科研基金(No.20123401110006)
安徽省振兴计划地方高水平大学建设(No.2013gx001)
关键词
射频开关
多频段
频率可重构
小尺寸手机天线
Antenna feeders
Cellular telephones
Directional patterns (antenna)
Long Term Evolution (LTE)
Mobile phones
Reconfigurable hardware
Telephone sets
Wide area networks
Wireless telecommunication systems
