Miniaturised bandpass filter using novel feeding structure for harmonic suppression

被引：6
作者：
Gao, L. [1 ,2 ]
Zhang, X. Y. [1 ,3 ]
Xue, Q. [2 ]
机构：
[1] S China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China
[2] City Univ Hong Kong, Shenzhen Res Inst, Informat & Commun Technol Ctr, Shenzhen 518000, Peoples R China
[3] State Key Lab Millimetre Waves, Nanjing, Jiangsu, Peoples R China
来源：
ELECTRONICS LETTERS | 2012年 / 48卷 / 22期
关键词：
RESONATORS;
D O I：
10.1049/el.2012.1389
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Presented is a very compact structure for designing harmonic-suppressed bandpass filters with high selectivity. The proposed filter utilises folded quarter-wavelength resonators to miniaturise the circuit size. A novel feeding structure is used to not only generate transmission zeros near the passband but also suppress the third harmonic. To verify the proposed idea, an experimental filter has been implemented. High skirt selectivity and wide stopband are observed in the measured results. The circuit area of the filter is only 7.9 x 5.4 mm (0.1 lambda(g) x 0.079 lambda(g)), where lambda(g) is the guided wavelength at the operating frequency of 2.4 GHz.
引用
收藏
页码：1414 / 1415
页数：2
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