一种用于 WLAN 的双频紧凑型天线

一种用于 WLAN 的双频紧凑型天线

内容简介：本文提出了一种紧凑型微带线馈电的适用于无限局域网（WLAN ）的双频天线，并获得了5．2GHz和5．8GHz的工作频点．该天线印刷在单层，介电常数为2．65的介质板上；天线尺寸为15 mm×12 mm×1 mm ．该天线由印制在介质板正面的倒置“土”字型贴片和背面开缝切角贴片组成．仿真和测试结果表明，该天线具有较好的双频工作特点，其阻抗带宽分别为210 M Hz（5．17～5．38 GHz）和318 M Hz（5．68～6．02 GHz）．该天线在双频工作点上的最大增益为别为1．75 dBi和2．32 dBi ，且具有较好的全向辐射特性．

Abstract：A compact size microstrip-line fed patch antenna used for WLAN operating at 5-GHz is pro-posed .The antenna consists of with horizontal "H-shapped"patch on the top side ,and the I-slot patch with two cuts on the bottom side .The antenna is printed on a single-layer substrate with a dielectric constant of 2 .65 and the overall size is 15 mm × 12 mm × 1 mm .The simulated and measured results show good dual-frequency selection ,with impedance bandwidth (return loss -10 dB definition) of 210 M Hz (5 .17~5 .38 GHz) and 318 M Hz (5 .68~6 .02 GHz) ,with the gains of 1 .75 dBi and 2 .32 dBi ,re-spectively .The radiation patterns of the dual-frequency antenna are omnidirectional .

作者：赵凤, 华伟, 程小双,

关键词：无限局域网, 紧凑型, 双频,