| 摘要: |
| 针对天线在ISM和UNNI频段的应用，提出了一种采用共面波导馈
电的新型单极子双频天线，在传统T型单极子天线上平行加载辐射贴片实现双频工作。分析
了天线尺寸变化对工
作频率的影响，得出所设计的天线频率比在1.67～2.67范围内可调。制作加工了工作于ISM/
UNNI频段的天线实物，测试结果与实验结果吻合良好。天线全向辐射性能良好，分别在低频
段和高频段获得了
21.28%和3.9%的相对带宽（S11≤-10 dB），适用于无线通信领域。 |
| 关键词: 微带天线 共面波导 双频 单极子 频率比可调 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目(60971118) |
|
| A Novel Dual-band Monopole Antenna for ISM and UNNI Bands |
| ZHOU Cheng,WANG Guang-ming,LIANG Jian-gang |
| (The Missile Institute, Air Force Engineering University, Sanyuan 713800, China) |
| Abstract: |
| For the application of antenna in ISM and UNNI bands, a novel monopole dual-band
antenna using CPW-fed is proposed. A radiation patch is loaded on a traditional
T-shaped antenna to realize
operating in dual-band. The effect of antenna size on frequency is analysed, whi
ch shows that the frequency ratio can be tuned from 1.67 to 2.67. An antenna wor
ked on ISM/UNNI bands
is fabricated and measured, and the measured results are in good agreement with
the simulated results. This antenna has a good radiation capability of full-dire
ction,and
it has gained a relative bandwith of 21.28% and 3.9% at the lower and higher fre
quency respectively（S11≤-10 dB）, so it is suit for wireless com
munication field. |
| Key words: microstrip antenna coplanar waveguide(CPW) dual-band monopole frequency ratio tunable |
《电讯技术》编辑部 