Microstrip Lowpass Filter with Very Sharp Transition Band and Wide Stopband

被引：8

作者：

Hayati, Mohsen ^{[1
]}

Sheikhi, Akram ^{[1
]}

机构：

[1] Razi Univ, Dept Elect Engn, Kermanshah, Iran

来源：

ETRI JOURNAL | 2011年 / 33卷 / 06期

关键词：

Microstrip lowpass filter; open stub; transition band; wide stopband;

D O I：

10.4218/etrij.11.0210.0493

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 lowpass filter with a very sharp transition band and wide stopband is proposed. The proposed filter is based on T-shaped patches which are etched in symmetrical structures and folded open stub. To obtain a wide stopband, we have used stub loaded semi-circle stepped-impedance structures. By designing the resonator with high inductance and capacitance, a very sharp transition band is achieved. The proposed filter has a 3-dB cutoff frequency at 2.37 GHz and a 40-dB rejection at 2.44 GHz. The stopband with an attenuation level better than -13.2 dB is up from 2.4 GHz to 16 GHz, and consequently we have reached the high and wide rejection in stopband with compact size. Good agreements between the simulated and the measured results are presented

引用

收藏

页码：981 / 984

页数：4

相关论文

共 12 条

[1] Compact lowpass filters with very sharp transition bands based on open complementary split ring resonators [J].

Aznar, F. ;

Velez, A. ;

Bonache, J. ;

Menes, J. ;

Martin, F. .

ELECTRONICS LETTERS, 2009, 45 (06) :316-U8

[2] DESIGN OF LOW-PASS ELLIPTIC FILTERS BY MEANS OF CASCADED MICROSTRIP RECTANGULAR ELEMENTS [J].

GIANNINI, F ;

SALERNO, M ;

SORRENTINO, R .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1982, 30 (09) :1348-1353

[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] Compact lowpass filter using stepped impedance hairpin resonator [J].

Hsieh, LH ;

Chang, K .

ELECTRONICS LETTERS, 2001, 37 (14) :899-900

[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] 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

[7] Compact defected ground structure in microstrip technology [J].

Liu, H ;

Li, Z ;

Sun, X .

ELECTRONICS LETTERS, 2005, 41 (03) :132-134

[8] Low insertion-loss, sharp-rejection and compact microstrip low-pass filters [J].

Mandal, Mrinal Kanti ;

Mondal, Priyanka ;

Sanyal, Subrata ;

Qhakrabarty, Ajay .

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2006, 16 (11) :600-602

[9] Compact microstrip low-pass filter with sharp rejection [J].

Tu, WH ;

Chang, K .

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2005, 15 (06) :404-406

[10] Miniaturised microstrip lowpass filter with broad stopband and sharp roll-off [J].

Wang, J. P. ;

Ge, L. ;

Guo, Y. -X. ;

Wu, W. .

ELECTRONICS LETTERS, 2010, 46 (08) :573-U48