Ultra-Wideband Differential Bandpass Filter With Narrow Notched Band and Improved Common-Mode Suppression by DGS

Author

Shi, Suyang ; Choi, Wai-Wa ; Che, Wenquan ; Tam, Kam-Weng ; Xue, Quan

Volume

22

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

185

Lastpage

187

Abstract

A novel microstrip ultra-wideband (UWB) differential filter with narrow notched band based on the transversal signal- interference concept is presented. In order to enhance the interference immunity from undesired signals efficiently, the notched band is implemented by coupling with quarter wavelength shorted-line at input and output ports. By taking advantage of the bandgap characteristic of defected ground structure (DGS), a slot-line DGS is used for improving the common-mode rejection. In this work, at the center frequency of the notched band which is 2.45 GHz, about 7.3% bandwidth (2.35-2.53 GHz) is realized by full-wave simulator. Agreement between experiment and simulation is observed.

Keywords

band-pass filters; defected ground structures; microstrip filters; transversal filters; ultra wideband technology; common-mode suppression; defected ground structure; full-wave simulator; interference immunity; microstrip ultra-wideband differential filter; narrow notched band; quarter wavelength shorted-line; transversal signal interference; ultra-wideband differential bandpass filter; Band pass filters; Impedance; Interference; Microstrip; Passband; Ultra wideband technology; Wireless communication; Defected ground structure (DGS); differential-/common-mode; notched band; shorted parallel coupled-line; transversal signal-interference;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2012.2187885

Filename

6172198