【作者】 李铠峰； 李越； 李佩航； 付鹏宇；

【Author】 Kaifeng Li;Yue Li;Peihang Li;Pengyu Fu;Department of Electronic Engineering,Tsinghua University;

【机构】 清华大学电子工程系；

【摘要】 本文提出了一种适用于全金属后盖平板电脑的宽带半环天线。该半环天线以平板电脑的主板为金属地,并被放置在仅4.2 mm的净空内。通过在半环结构上加载两个串联交指电容,可以同时激励起环天线的0/1/2次模。同时,通过优化电容值和加载位置,该天线可以实现三个环模式的协同调控,并最终在3.14～8.03 GHz实现了|S₁₁|<-6 dB （相对带宽87.6%）。该天线适用于全金属后盖平板电脑的窄净空宽带通信场景。更多还原

【Abstract】 A broadband half-loop antenna is proposed for full metal housing tablet computers.The half loop utilizes the tablet’s mainboard as the metal ground and is placed within a 4.2 mm clearance.By loading two series distributed capacitances on the half-loop structure,the 0^th/1^st/2^nd-order modes of the half loop are simultaneously excited.Through optimization of the capacitance values and loading positions,the proposed antenna achieves multimode synergy among these three resonant modes,ultimately realizing |S₁₁|<-6 dB across 3.14-8.03 GHz（a relative bandwidth of 87.6%）.The proposed antenna meets the broadband communication requirements for full metal housing tablet computers with narrow clearance.更多还原