Compact Lowpass Filter with Wide Stopband Using Windmill-Shaped Resonator

被引：2

作者：

Hayati, Mohsen ^{[1
,2
]}

Yousefzadeh, Yasin ^{[1
]}

机构：

[1] Razi Univ, Fac Engn, Dept Elect Engn, Tage E Bostan 67149, Kermanshah, Iran

[2] Razi Univ, Fac Engn, Computat Intelligence Res Ctr, Tage E Bostan 67149, Kermanshah, Iran

来源：

ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING | 2014年 / 39卷 / 04期

关键词：

Open stubs; Microstrip lowpass filter; Wide stopband; Windmill; shaped resonator; REJECTION;

D O I：

10.1007/s13369-013-0930-5

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A novel compact lowpass filter using the windmill-shaped resonator is proposed. The proposed filter has 3-dB cutoff frequency at 4.4GHz and 20dB rejection at 5GHz (the transition band is only 0.6 GHz). The filter has wide stopband with attenuation level better than -20dB from 5 up to 20.9GHz. In this work, we have reached the high and wide rejection in stopband with the compact size as well as good insertion and return loss. Finally, the proposed filter has been fabricated and good agreements between the simulated and measured results are obtained.

引用

页码：3033 / 3038

页数：6

共 15 条

[1] Compact lowpass filter using spiral compact microstrip resonant cells [J].

Gu, J ;

Sun, X .

ELECTRONICS LETTERS, 2005, 41 (19) :1065-1066

[2] Compact lowpass filter with high and wide rejection in stopband using front coupled tapered CMRC [J].

Hayati, M. ;

Lotfi, A. .

ELECTRONICS LETTERS, 2010, 46 (12) :846-847

[3] Elliptic-function lowpass filter with sharp cutoff frequency using slit-loaded tapered compact microstrip resonator cell [J].

Hayati, M. ;

Lotfi, A. .

ELECTRONICS LETTERS, 2010, 46 (02) :143-U63

[4]

Hong J.S., 2001, MICROSTRIP FILTERS R, P108

[5] Compact elliptic-function low-pass filters using microstrip stepped-impedance hairpin resonators [J].

Hsieh, LH ;

Chang, K .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2003, 51 (01) :193-199

[6] A compact sharp-rejection lowpass filter [J].

Hung, Cheng-Yuan ;

Weng, Min-Hang ;

Yang, Ru-Yuan .

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2008, 50 (04) :894-896

[7]

Kim I.S., 2005, ELECTRON LETT, V16, P41

[8] Compact microstrip lowpass filter with sharp roll-off and wide stop-band [J].

Li, J. -L. ;

Qu, S. -W. ;

Xue, Q. .

ELECTRONICS LETTERS, 2009, 45 (02) :110-U34

[9] Compact quasi-elliptic lowpass filter using symmetric rectangular coupled capacitors [J].

Li, L. ;

Li, Z. -F. .

ELECTRONICS LETTERS, 2008, 44 (02) :124-125

[10] Compact and selective lowpass filter with very wide stopband using tapered compact microstrip resonant cells [J].

Li, L. ;

Li, Z. -F. ;

Wei, Q. -F. .

ELECTRONICS LETTERS, 2009, 45 (05) :267-U44

← 1 2 →