A Novel Tri-band GPS/WLAN Antenna for Tablet with Full Metal Housing  

作　　者：Xiaojun Tang Peng Chen Jianlan Wu Ping Wang Hao Wang Guangli Yang 

机构地区：[1]School of Information and Communication Engineering,Shanghai University [2]College of Information and Communication Engineering,Harbin Engineering University

出　　处：《Journal of Harbin Institute of Technology(New Series)》2018年第2期33-40,共8页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the Shanghai"Eastern Scholarship"(Grant No.B.60-D107-14-201);Shanghai "1000 Plan"(Grant No.S.39-0107-15-204)

摘　　要：A full metal housing antenna for tablet to cover the GPS and WLAN b/g/a bands(1565-1585,2412-2484 and 4920-5825 MHz) is presented. The cavity is created by the enclosed volume of PCB and metal housing of the tablet. The cavity is properly excited by a flat exciting element w ith dimensions of only 36×4mm^2 positioned at an open slot betw een PCB and metal housing at the tablet's top surface. Among many excited cavity mode resonances,the ones close to the target frequency bands w ere selected and properly adjusted by adding grounding vias and shorting strip based on the E field distributions. This unique cavity mode excited antenna has measured-6dB return loss bandw idth of 1500-1600MHz,2380-2500 MHz,4580-5960 MHz and the average efficiencies for all the three bands are over 50%. Therefore,it overcomes the efficiency degradation issue that traditional IFA or monopole antennas are facing at the full metal housing environment.A full metal housing antenna for tablet to cover the GPS and WLAN b/g/a bands(1565-1585,2412-2484 and 4920-5825 MHz) is presented. The cavity is created by the enclosed volume of PCB and metal housing of the tablet. The cavity is properly excited by a flat exciting element w ith dimensions of only 36×4mm^2 positioned at an open slot betw een PCB and metal housing at the tablet's top surface. Among many excited cavity mode resonances,the ones close to the target frequency bands w ere selected and properly adjusted by adding grounding vias and shorting strip based on the E field distributions. This unique cavity mode excited antenna has measured-6dB return loss bandw idth of 1500-1600MHz,2380-2500 MHz,4580-5960 MHz and the average efficiencies for all the three bands are over 50%. Therefore,it overcomes the efficiency degradation issue that traditional IFA or monopole antennas are facing at the full metal housing environment.

关 键 词：CAVITY full METAL HOUSING GPS WLAN TABLET 

分 类 号：TN82[电子电信—信息与通信工程]