Three-Pole Tunable Filters With Constant Bandwidth Using Mixed Combline and Split-Ring Resonators

被引：35

作者：

Zhao, Zhiyuan ^{[1
]}

Chen, Jiang ^{[2
]}

Yang, Lin ^{[2
]}

Chen, Kunhe ^{[2
]}

机构：

[1] PLA Univ Sci & Technol, Inst Commun Engn, Nanjing 210007, Jiangsu, Peoples R China

[2] Nanjing Telecommun Technol Inst, Nanjing 210007, Jiangsu, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2014年 / 24卷 / 10期

关键词：

Combline resonators; constant absolute bandwidth (CABW); split-ring resonators; three-pole tunable filters; varactor-tuned;

D O I：

10.1109/LMWC.2014.2340996

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 three-pole tunable bandpass filter using mixed varactor-tuned combline and split-ring resonators is proposed in this letter. A tuning range of 1.1-1.88 GHz (70.9%) with an almost constant 3 dB absolute bandwidth 90 +/- 8 of MHz (7.4%-4.4% fractional bandwidth) is demonstrated. The filter shows its insertion loss varying from 6.8 dB to 4.3 dB and return loss better than 13.5 dB within the tuning range. The rejection levels at both the lower and upper stopbands are >30 dB. The measured results show good agreement with the simulated ones.

引用

页码：671 / 673

页数：3

共 11 条

[1] High-Q 4-6-GHz Suspended Stripline RF MEMS Tunable Filter With Bandwidth Control [J].

Cheng, Chih-Chieh ;

Rebeiz, Gabriel M. .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2011, 59 (10) :2469-2476

[2] A Quasi Elliptic Function 1.75-2.25 GHz 3-Pole Bandpass Filter With Bandwidth Control [J].

Chiou, Yi-Chyun ;

Rebeiz, Gabriel M. .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2012, 60 (02) :244-249

[3] Corrugated Microstrip Coupled Lines for Constant Absolute Bandwidth Tunable Filters [J].

El-Tanani, Mohammed A. ;

Rebeiz, Gabriel M. .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2010, 58 (04) :956-963

[4]

Guyette AC, 2009, 2009 EUROPEAN MICROWAVE CONFERENCE, VOLS 1-3, P1828

[5]

Hong J. S. G., 2001, WILEY MICRO

[6] Reconfigurable Planar Filters [J].

Hong, Jia-Sheng .

IEEE MICROWAVE MAGAZINE, 2009, 10 (06) :73-83

[7] ELECTRONICALLY TUNABLE RING RESONATOR MICROSTRIP AND SUSPENDED-SUBSTRATE FILTERS [J].

KUMAR, S .

ELECTRONICS LETTERS, 1991, 27 (06) :521-523

[8]

Makimoto M., 1986, 1986 IEEE - MTT-S International Microwave Symposium Digest (Cat. No.86CH2031-0), P411

[9] Multilayer Planar Tunable Filter With Very Wide Tuning Bandwidth [J].

Sun, Jim S. ;

Kaneda, Noriaki ;

Baeyens, Yves ;

Itoh, Tatsuo ;

Chen, Young-Kai .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2011, 59 (11) :2864-2871

[10] Electronically Tunable Filters [J].

Wong, Peng Wen ;

Hunter, Ian .

IEEE MICROWAVE MAGAZINE, 2009, 10 (06) :46-54

← 1 2 →