| 采用折叠型阶跃阻抗谐振器的新颖双频带带通滤波器 |
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| 引用本文： | 马德臣,肖中银,相亮亮,黄春艳,寇鑫,吴效环.采用折叠型阶跃阻抗谐振器的新颖双频带带通滤波器[J].上海大学学报(自然科学版),2012(4):331-334. |
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| 作者姓名： | 马德臣 肖中银 相亮亮 黄春艳 寇鑫 吴效环 |
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| 作者单位： | 上海大学通信与信息工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(61077068);上海市自然科学基金资助项目(10ZR1411900);上海市重点学科建设资助项目(S30108);上海市科委重点实验室资助项目(08DZ2231100) |
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| 摘 要： | 设计一种新颖的双频带带通滤波器(bandpass filter,BPF),可应用于无线局域网(wireless local area network,WLAN)IEEE 802.11 b/a(2.4/5.2 GHz).该滤波器是由折叠的阶跃阻抗谐振器(stepped impedance resonator,SIR)外加2个枝节构成,并具有一个传输零点.该滤波器的2个通带分别由折叠型SIR的基频和一次杂散频率产生.为了满足输入和输出阻抗匹配的要求,改善双频段的通带性能,采用零度馈电方式.仿真结果显示,2个频带在2.4/5.2 GHz时的3 dB相对带宽分别为6.3%和3.4%.测量结果和仿真结果基本吻合.
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| 关 键 词： | 双频带 带通滤波器 阶跃阻抗谐振器 |
Compact Dual-Band Bandpass Filter Using Folded Stepped Impedance Resonator |
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| MA De-chen,XIAO Zhong-yin,XIANG Liang-liang,HUANG Chun-yan,KOU Xin,WU Xiao-huan.Compact Dual-Band Bandpass Filter Using Folded Stepped Impedance Resonator[J].Journal of Shanghai University(Natural Science),2012(4):331-334. |
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| Authors: | MA De-chen XIAO Zhong-yin XIANG Liang-liang HUANG Chun-yan KOU Xin WU Xiao-huan |
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| Institution: | (School of Communication and Information Engineering,Shanghai University,Shanghai 200072,China) |
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| Abstract: | A novel compact dual-band bandpass filter(BPF) is designed for applications of wireless local area network(WLAN) IEEE 802.11 b/a(2.4/5.2 GHz).The filter is composed of folded stepped impedance resonators(SIRs) and two stubs with one transmission zero.The two passbands are centered at the basic resonant frequency and the first-order spurious frequency.To match the input and output impedances and improve performance of the two passbands,a tapline is used to feed the coupling resonator at zero degree.Simulation results show that the two center frequencies are located at the desired 2.4 and 5.2 GHz with 3 dB fractional bandwidths of 6.3% and 3.4%,respectively.The measured results are in general agreement with the simulation results. |
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| Keywords: | dual-band bandpass filter(BPF) stepped impedance resonator(SIR) |
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