准椭圆函数滤波器的边带优化设计

J4 ›› 2009, Vol. 36 ›› Issue (3): 448-467.

准椭圆函数滤波器的边带优化设计

朱永忠^1,2;谢拥军¹;谢文宣³;李亚峰¹

(1. 西安电子科技大学天线与微波技术重点实验室，陕西西安 710071;
2. 长安大学信息工程学院，陕西西安 710064;
3. 国家无线电频谱管理研究所，陕西西安 710061)

收稿日期:2008-01-24 修回日期:2008-05-18 出版日期:2009-06-20 发布日期:2009-07-04
基金资助:
教育部新世纪优秀人才支持计划资助(NCET-04-0950)

Band-edge optimization design of the quasi-elliptic filter

ZHU Yong-zhong^1,2;XIE Yong-jun¹;XIE Wen-xuan³;LI Ya-feng¹

(1. Key Lab. of Antennas and Microwave Technology, Xidian Univ., Xi'an 710071， China;
2. School of Information Eng., Chang'an Univ., Xi'an 710064， China;
3. The National Research Inst. of Radio Spectrum Management, Xi'an 710061， China)

Received:2008-01-24 Revised:2008-05-18 Online:2009-06-20 Published:2009-07-04

摘要/Abstract

摘要：

提出了标准椭圆函数的边带优化方法，在此基础上使标准椭圆函数与修正后的准椭圆函数在边带上的衰减相等，得到准椭圆函数的等波纹系数．这种修正后的准椭圆函数不仅能保持设计带宽不变，亦能提高滤波器的边带衰减．最后，据此设计了一种新型螺旋形SIR四腔准椭圆函数滤波器，实测表明这种结构的尺寸可减小15％，过渡带减少20 MHz，而且可以将二次与三次谐波抑制在30 dB以下．

关键词: 准椭圆函数, 交叉耦合, 传输零点, 边带特性

Abstract:

A new technique is presented for maximizing the band-edge selectivity of elliptic filters, and then the equal ripple parameter of the quasi-elliptic function can be calculated when the band-edge selectivities of the elliptic function and quasi-elliptic function are the same. The quasi-elliptic function based on the method not only keeps the bandwidth invariable, but effectively narrows the transition band. Finally, a novel quasi-elliptic microstrip filter composed of four spiral stepped-impedance resonators (SIR) is designed. Measured results show that the filter acquires 15％ size reduction and 20 MHz transition band reduction, but can also effectively inhibit the second and third harmonics.

Key words: quasi-elliptic function, cross-coupling, transmission zero, band-edge characteristics, band-edge characteristics

中图分类号:

TN713. 5

朱永忠1,2;谢拥军1;谢文宣3;李亚峰1. 准椭圆函数滤波器的边带优化设计[J]. J4, 2009, 36(3): 448-467.

ZHU Yong-zhong1,2;XIE Yong-jun1;XIE Wen-xuan3;LI Ya-feng1. Band-edge optimization design of the quasi-elliptic filter[J]. J4, 2009, 36(3): 448-467.

参考文献

［1］Orchard H J, Willson A N. Elliptic Functions for Filter Design［J］. IEEE Trans on Circuits and Systems, 1997, 44(4): 273-287.
［2］Kuo Jen-Tsai, Maa Ming-Jyh, Lu Ping-Han. A Microstrip Elliptic Function Filter with Compact Miniaturized Hairpin Resonators［J］. IEEE Microwave and Guided Wave Letters, 2000, 10(3): 94-95.
［3］Kuo Jen-Tsai, Cheng Hung-Sen. Design of Quasi-Elliptic Function Filters with a Dual-Passband Response［J］. IEEE Microwave and Wireless Components Letters, 2004, 14(10): 472-474.
［4］Kuo J T, Hsu C L, Shih E. Compact Planar Quasi-elliptic Function Filter with Inline Stepped-Impedance Resonators［J］. IEEE Trans on Microw Theory Tech, 2007, 55(8): 1747-1755.
［5］曾志华, 贾新章, 刘宁, 等. 带通滤波器的优化设计和可制造性分析［J］. 西安电子科技大学学报, 2003, 30(1): 66-69.
Zeng Zhihua, Jia Xinzhang, Liu Ning, et al. Optimal Design and Manufacturablity Analysis of a Band-pass Filter［J］. Journal of Xidian University, 2003, 30(1): 66-69.
［6］Chen J X, Li J L, Wan K C, et al. Compact Quasi-elliptic Function Filter Based on Defected Ground Structure ［J］. IEE Proc Microw Antennas Propag, 2006, 153(8): 320-324.
［7］Ni D, Zhu Y, Xie Y. Synthesis and Design of Compact Microwave Filters with Direct Source-Load Coupling ［J］. J of Electromagn Waves and Appl, 2006, 20(12): 1875-1885.
［8］Ni D, Zhu Y, Xie Y. Design of Hexagonal Filter with Source-Load Coupling ［J］. Electron Letter, 2006, 42(23): 1355-1356.
［9］苏涛. 多路耦合器及其相关理论和技术研究［D］. 西安: 西安电子科技大学, 2004: 60-66.
Su Tao. Study of Multicoupler and Related Theories and Technologies［D］. Xi'an: Xidian University, 2004: 60-66.
［10］朱永忠, 谢拥军, 倪大宁. 含源-负载交叉耦合的准椭圆函数滤波器设计［J］. 电子与信息学报, 2008, 30(3): 604-606.
Zhu Yongzhong, Xie Yongjun, Ni Daning. Design of Quasi-Elliptic Filter with Source-load Cross-coupling ［J］. Journal of Electronics ＆ Information Technology, 2008, 30(3): 604-606.
［11］Corral C A, Lindquist C S. Optimizing Elliptic Filter Selectivity ［J］. Analog Integrated Circuits and Signal Processing, 2001, 28(1): 53-61.
［12］Cameron R J. General Coupling Matrix Synthesis Methods for Chebyshev Filtering Functions ［J］. IEEE Trans on Microw Theory Tech, 1999, 47(8): 433-442.
［13］Chi T K, Ma Z W, Shi Y K. Design of an Elliptic-function Bandpass Filter Using Microstrip Spiral Resonators ［J］. IEICE Trans on Electronics, 2005, 88(12): 1040-1048.

[1]	林磊;吴边;苏涛;梁昌洪. 新型宽阻带双通带滤波器设计[J]. J4, 2015, 42(6): 56-60.
[2]	林磊;孙守家;吴边;梁昌洪. 一种新型多模三通带滤波器[J]. J4, 2015, 42(3): 38-42+96.
[3]	秦培元;石小林;梁昌洪;吴边. 一种新型X波段基片集成波导双模带通滤波器[J]. J4, 2009, 36(5): 831-834.
[4]	吴边;梁昌洪;陈亮;李刚. 一种开口环缺陷地面结构复合左右手传输线 [J]. J4, 2008, 35(2): 254-257.