| 双频滤波器的小型化设计 |
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| 引用本文： | 褚庆昕,叶亮华,陈付昌. 双频滤波器的小型化设计[J]. 华南理工大学学报(自然科学版), 2010, 38(6). DOI: 10.3969/j.issn.1000-565X.2010.06.002 |
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| 作者姓名： | 褚庆昕 叶亮华 陈付昌 |
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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： | 国家自然科学基金重点项目，广东省自然科学基金资助项目 |
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| 摘 要： | 本文提出了一种小型的中心频率和带宽可调的双频滤波器的设计。该滤波器由两组不同的λ/4微带谐振器组合而成，并由它们谐振产生两个不同的通带。通过调节每组谐振器之间的耦合缝隙，可以独立地控制每个通带的带宽。最后，我们设计了一工作在2.4 GHz和5.2 GHz的双频滤波器并进行了实验，实测的结果和仿真的结果基本吻合，从而验证了这种设计方法的有效性。
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| 关 键 词： | 双频滤波器 小型滤波器 λ/4微带谐振器 等效电路 |
| 收稿时间： | 2009-07-01 |
| 修稿时间： | 2009-07-16 |
Design of Compact Dual-Band Bandpass Filter |
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| Chu Qing-xin,Ye Liang-hua,Chen Fu-chang. Design of Compact Dual-Band Bandpass Filter[J]. Journal of South China University of Technology(Natural Science Edition), 2010, 38(6). DOI: 10.3969/j.issn.1000-565X.2010.06.002 |
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| Authors: | Chu Qing-xin Ye Liang-hua Chen Fu-chang |
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| Abstract: | A compact dual-band filter with tunable operating frequencies and bandwidths is presented. The filter is consisted of two sets of λ/4 microstrip resonators which are independently designed to operate at two different frequencies. Since the coupled spacing between adjacent resonators in either set is extracted in an independent manner, the bandwidth for either the lower or the upper operating frequency can be independently adjusted. Finally, a dual-band filter operating at 2.4 and 5.2 GHz is designed and fabricated. The measurement and simulation results which validate the proposed design are in good agreement. |
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| Keywords: | dual-band filter compact filter λ/4 microstrip resonator equivalent circuit |
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