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: |
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基金项目: |
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Design of coupling-load-based a low-profile antenna |
SONG Yang,XUE Feng-zhang |
() |
Abstract: |
A miniaturized dualband antenna is proposed. By adding couplingload
electric board,the antenna can achieve broad bandwidth with a low profile.
Ansoft HFSS is used to simulate and design a lowprofile anten
na based on couplingload 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 |