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基于耦合加载的低剖面天线设计
宋阳,薛锋章
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(华南理工大学电子与信息学院，广州 510640)

摘要:

设计了一种小型化双频天线。通过在单极子天线上引入寄生耦合的方法，即在单极子顶部引入耦合加载板，既保证了单极子天线的辐射全向性又减小了电小天线的分布电容，从而使该天线具有宽频带、低剖面特性。采用仿真软件Ansoft HFSS进行仿真和优化，优化结果表明：该天线工作频率为824～960 MHz/1 710～2 690 MHz（驻波比小于等于2）。根据仿真模型制作了一款天线，实测驻波带宽可达811～1050MHz/1580～2660 MHz，且在水平面内辐射全向方向图。该天线在限制尺寸的情况下有效地展宽了带宽。

关键词: 无线光纤分布系统单极子低剖面天线耦合加载

DOI：

基金项目:

Design of coupling-load-based a low-profile antenna

SONG Yang,XUE Feng-zhang

()

Abstract:

A miniaturized dualband antenna is proposed. By adding couplingload electric board,the antenna can achieve broad bandwidth with a low profile. Ansoft HFSS is used to simulate and design a lowprofile anten na based on couplingload which VSWR is less than 2 in the 824～960 MHz a nd 1710～2 690 MHz. Finally，an antenna is fabricated based on the simulatio n model.The measured VSWR is less than 2 in 811～1 050 MHz and 1 580 ～2 660 MHz,and the horizontal radiation pattern is omnidirectional.The a ntenna has a broad bandwidth with a restricted size.

Key words: wireless fiber distribution system monopole low profile antenna coupling load