| 基于SIR结构的双频宽带耦合器 |
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| 引用本文： | 褚庆昕,杨琳,林峰.基于SIR结构的双频宽带耦合器[J].华南理工大学学报(自然科学版),2010,38(5). |
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| 作者姓名： | 褚庆昕 杨琳 林峰 |
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| 作者单位： | 华南理工大学,电子与信息学院,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目，国家自然科学青年基金资助项目 |
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| 摘 要： | 针对传统双频耦合器工作带宽窄的问题,提出了一种基于阶梯阻抗谐振器(SIR)的双频宽带分支耦合器设计方法.通过调节SIR的阻抗,可以在工作的双频段(高低频段)上灵活地调节耦合器谐振频率的位置和耦合器的带宽.最后设计并加工了一个工作在2.20和5.50GHz的双频宽带3 dB分支耦合器.该耦合器覆盖了全球移动通讯系统的1.80GHz频段和无线局域网系统的2.45、5.25、5.80 GHz频段.测量结果与仿真结果吻合良好,验证了文中双频宽带耦合器设计方法的有效性.
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| 关 键 词： | 双频宽带耦合器 阶跃阻抗谐振器 |
| 收稿时间： | 2009-3-26 |
| 修稿时间： | 2009-10-31 |
Dual-Band Broadband Coupler with SIR Branches |
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| Chu Qing-xin,Yang Lin,Lin Feng.Dual-Band Broadband Coupler with SIR Branches[J].Journal of South China University of Technology(Natural Science Edition),2010,38(5). |
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| Authors: | Chu Qing-xin Yang Lin Lin Feng |
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| Abstract: | A 4-branch-line broad-band coupler using SIR-branch with dual-band performance is presented. By changing the impedances of SIR, the bandwidth of the lower and upper frequency can be adjusted. It also provides more flexibility to allocate the resonate frequencies of interest and broader bandwidths at each operation frequency as the impedance ratio of the SIR changes. For verification, a dual-band 3-dB broad coupler operating at 2.2/5.5 GHz is fabricated, aimed to cover the 1.8 GHz GSM band and the 2.45/5.25/5.8 GHz WLAN bands. Simulated and measured results are in good agreement. |
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| Keywords: | dual-broad-band coupler SIR |
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