Compact Wideband Differential Bandpass Filters Using Half-Wavelength Ring Resonator

Author

Wenjie Feng ; Wenquan Che ; Yalin Ma ; Quan Xue

Author_Institution

Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China

Volume

23

Issue

2

fYear

2013

fDate

Feb. 2013

Firstpage

81

Lastpage

83

Abstract

A new compact wideband differential bandpass filters with wideband common mode suppression using half-wavelength ring resonator is presented in this letter. Five-order passband for the wideband differential mode with two transmission zeros close to the passband is realized with four open stubs. A planar wideband differential filter (3 dB fractional bandwidth 79%) with wideband common mode suppression is designed and fabricated. The theoretical and measured results agree well and show good in-band filtering performances and high selectivity.

Keywords

band-pass filters; resonator filters; compact wideband differential bandpass filters; five-order passband; half-wavelength ring resonator; in-band filtering; planar wideband differential filter; transmission zeros; wideband common mode suppression; wideband differential mode; Band pass filters; Filtering theory; Microwave filters; Optical ring resonators; Passband; Wideband; Wireless communication; Bandpass filter (BPF); differential/common mode; half-wavelength; open stub; wideband;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2013.2239632

Filename

6459030