Notched ultra-wideband (UWB) bandpass filter with wide upper stopband based on electromagnetic bandgap (EBG) structures

Author

Gao, Ming-Jian ; Wu, Lin-Sheng ; Mao, Junfa

Author_Institution

Key Lab. of Minist. of Educ. for Res. of Design & EMC of High Speed Electron. Syst., Shanghai Jiao Tong Univ., Shanghai, China

Volume

2

fYear

2012

fDate

5-8 May 2012

Firstpage

1

Lastpage

4

Abstract

In this paper, a new notched ultra-wideband (UWB) bandpass filter with wide upper stopband is proposed using electromagnetic bandgap (EBG) structures. The design of the UWB filter is started from a stepped-impedance stub-loaded resonator, which works as a multiple-mode resonator (MMR) and provides a UWB passband with sharp side slopes. Then, EBG-loaded lines are incorporated into the resonator to suppress the spurious responses above the passband. In order to introduce a notch for WLAN application of 5.2 GHz, a folded stepped-impedance resonator is located near to the stub of MMR. It has been demonstrated by the simulated and measured results that our proposed UWB filter has the performances of UWB passband with good frequency selectivity, narrow notched band and very wide upper stopband, simultaneously.

Keywords

band-pass filters; notch filters; photonic band gap; ultra wideband technology; wireless LAN; EBG-loaded lines; UWB filter; WLAN; electromagnetic bandgap structures; frequency 5.2 GHz; multiple-mode resonator; notched ultra-wideband bandpass filter; stepped-impedance stub-loaded resonator; Band pass filters; Filtering theory; Metamaterials; Passband; Periodic structures; Resonator filters; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on

Conference_Location

Shenzhen

Print_ISBN

978-1-4673-2184-6

Type

conf

DOI

10.1109/ICMMT.2012.6230024

Filename

6230024