A Novel Cross-Coupled Filter Through Mixed Coupling Path with Multiple Tunable Transmission Zeros

被引：3

作者：

He, J. ^{[1
]}

Jin, L. ^{[1
]}

Tang, Wei ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Res Inst Elect Sci & Technol, Chengdu 610054, Peoples R China

来源：

ELECTROMAGNETICS | 2014年 / 34卷 / 08期

关键词：

mixed coupling; cross-coupled; transmission zeros; BANDPASS-FILTERS; DESIGN; RESONATORS; LINE;

D O I：

10.1080/02726343.2014.948773

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：

A novel bandpass filter with multiple transmission zeros using a mixed-coupling microstrip stepped-impedance resonator is proposed and investigated in this article. A microstrip with a grounded via hole is added in the middle of the improved microstrip stepped-impedance resonator; the coupling gap and the grounded via hole act as the electric and magnetic coupling, respectively, by which additional transmission zeros can be generated near the passband. Based on the proposed filter topology, a fourth-order bandpass filter with five transmission zeros is fabricated and measured. Compared with a conventional cascaded-quadruplet filter, the novel designed filter has sharper rejection with a symmetrical response and more compact size. Moreover, the proposed idea leads to a new solution to decrease size as well as increase the capability of the conventional stepped-impedance resonator filters.

引用

页码：608 / 616

页数：9

共 15 条

[1] A compact open-loop filter with mixed electric and magnetic coupling [J].

Chu, Qing-Xin ;

Wang, Huan .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2008, 56 (02) :431-439

[2] A Novel Crossed Resonator and Its Applications to Bandpass Filters [J].

Chu, Qing-Xin ;

Chen, Fu-Chang ;

Tu, Zhi-Hong ;

Wang, Huan .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2009, 57 (07) :1753-1759

[3] Design of Microstrip Cross-Coupled Bandpass Filter With Multiple Independent Designable Transmission Zeros Using Branch-Line Resonators [J].

Deng, Pu-Hua ;

Tsai, Jen-Tse .

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2013, 23 (05) :249-251

[4] SUSPENDED SUBSTRATE STRIPLINE BANDPASS FILTERS WITH SOURCE-LOAD COUPLING STRUCTURE USING LUMPED AND FULL-WAVE MIXED APPROACH [J].

Ho, M-H. ;

Chen, P. -F. .

PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER, 2012, 122 :519-535

[5] QUASI-ELLIPTIC FUNCTION BANDPASS FILTER WITH UPPER STOPBAND EXTENSION AND HIGH REJECTION LEVEL USING CROSS-COUPLED STEPPEDIMPEDANCE RESONATORS [J].

Kuo, J. -T. ;

Tang, S. -C. ;

Lin, S. -H. .

PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER, 2011, 114 :395-405

[6] Application of inductive source-load coupling in microstrip dual-mode filter design [J].

Li, L. ;

Li, Z. -F. .

ELECTRONICS LETTERS, 2010, 46 (02) :141-142

[7] New Microstrip Cascaded-Quadruplet Bandpass Filter Based on Connected Couplings and Short-Ended Parallel-Coupled Line [J].

Lin, Shih-Cheng .

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2014, 24 (01) :2-4

[8] A compact size coupling controllable filter with separate electric and magnetic coupling paths [J].

Ma, KX ;

Ma, JG ;

Yeo, KS ;

Do, MA .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2006, 54 (03) :1113-1119

[9] Narrowband Microwave Filters With Mixed Topology [J].

Macchiarella, Giuseppe ;

Oldoni, Matteo ;

Tamiazzo, Stefano .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2012, 60 (12) :3980-3987

[10] The Design of Miniature Multilayer Bandpass Filters With Mixed Couplings [J].

Qian, Shilong ;

Brand, Gerdus ;

Hong, Jiasheng ;

Meyer, Petrie .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2013, 61 (12) :4072-4078

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