摘要
设计了一款平面倒F(PIFA)耦合短路单极子形式的八频带LTE天线.通过50Ω同轴线将信号反馈给天线的PIFA支节,并利用电容容性耦合,将PIFA支节中的能量反馈给短路单极子支节.两支节激发出多个谐振模,拓宽天线频带.测试结果表明,天线在LTE频段效率大于47%,带内回波损耗小于-6dB.与传统的LTE天线相比具有结构简单、频带宽、易于制作、成本低等优点.
A coupled-fed shorted monopole with a planar inverted-F antenna（PIFA） feed structure as an effective radiator for eight-band LTE operation in the laptop computer was presented.The antenna used a 50 Ω coaxial cable to feed signal into PIFA branch,and thus the energy of PIFA branch was fed into the shorted monopole branch due to the coupling effect of the capacitors.The coupling of the two branches produced multiple resonant modes,broadening the antenna band.The measured results show that the efficiency of the proposed LTE antenna exceeds 47％,with a return loss of less than-6 dB.The advantages of the presented antenna include its simple structure,broadened bandwidth,easier manufacturing and lowered cost,compared with conventional LTE antennas.
基金
国家自然科学基金(61172020)
高等学校博士点基金(20123401110006)资助
