A tunable bandpass filter with constant absolute bandwidth based on one ring resonator

被引：2

作者：

Wang, Y. -Y. ^{[1
]}

Wei, F. ^{[1
]}

Liu, B. ^{[1
]}

Xu, H. ^{[1
]}

Shi, X. -W. ^{[1
]}

机构：

[1] Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Xian 710071, Shaanxi, Peoples R China

来源：

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS | 2012年 / 26卷 / 11-12期

关键词：

DUAL-BAND; DESIGN;

D O I：

10.1080/09205071.2012.705137

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 miniaturized tunable bandpass filter (BPF) with constant absolute bandwidth (ABW) based on a single ring resonator is presented in this paper. The proposed BPF is composed of one ring resonator and a pair of 1/4 lambda resonators loaded with varactors. The working frequency of the BPF depends on the pair of 1/4 lambda resonators. The ring resonator is introduced to transfer energy effectively and improve the characteristics of the BPF. An experimental filter has been designed and fabricated which maintains constant ABW across the tuning range from 1.80 to 2.44 GHz. The predicted results are compared with measured data, and a good agreement is reported, which verifies the proposed method.

引用

页码：1587 / 1593

页数：7

共 19 条

[1] Compact Second-Order Highly Linear Varactor-Tuned Dual-Mode Filters With Constant Bandwidth [J].

Athukorala, Lakshman ;

Budimir, Djuradj .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2011, 59 (09) :2214-2220

[2]

Chang K., 1996, MICROWAVE RING CIRCU

[3] VERY MINIATURE DUAL-BAND AND DUAL-MODE BANDPASS FILTER DESIGNS ON AN INTEGRATED PASSIVE DEVICE CHIP [J].

Chen, C-H ;

Shih, C-S ;

Horng, T-S ;

Wu, S-M .

PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER, 2011, 119 :461-476

[4] TUNABLE AND SWITCHABLE BANDPASS FILTERS USING SLOT-LINE RESONATORS [J].

Chen, J. -X. ;

Shi, J. ;

Bao, Z. -H. ;

Xue, Q. .

PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER, 2011, 111 :25-41

[5] A NOVEL DUAL-MODE BANDPASS FILTER USING STUB-LOADED DEFECTED GROUND OPEN-LOOP RESONATOR [J].

Guan, X. ;

Wang, B. ;

Wang, X. -Y. ;

Wang, S. ;

Liu, H. .

PROGRESS IN ELECTROMAGNETICS RESEARCH LETTERS, 2011, 26 :31-37

[6] 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

[7] COMPACT DUAL-BAND BANDPASS FILTER USING FOLDED SIR WITH TWO STUBS FOR WLAN [J].

Ma, D-C ;

Xiao, Z-Y ;

Xiang, L-L ;

Wu, X-H ;

Huang, C-Y ;

Kou, X. .

PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER, 2011, 117 :357-364

[8] Low-loss two-pole tunable filters with three different predefined bandwidth characteristics [J].

Park, Sang-June ;

Rebeiz, Gabriel M. .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2008, 56 (05) :1137-1148

[9] Investigations on an h-fractal wideband microstrip filter with multi-passbands and a tuned notch band [J].

Patin J.M. ;

Labadie N.R. ;

Sharma S.K. .

Progress In Electromagnetics Research B, 2010, (22) :285-303

[10] Coupled lines from filter to composite right/left handed-cells [J].

Safwat A.M.E. ;

Abuelfadl T.M. .

Progress In Electromagnetics Research B, 2010, (26) :451-469

← 1 2 →