Compact bandpass filters with wide controllable fractional bandwidth

Author

Mondal, P. ; Mandal, M.K. ; Chaktabarty, A. ; Sanyal, S.

Author_Institution

Dept. of Electron. & Electr. Commun. Eng., Indian Inst. of Technol., Kharagpur

Volume

16

Issue

10

fYear

2006

Firstpage

540

Lastpage

542

Abstract

In this letter, complementary split ring resonators (CSRR) are proposed to design bandpass filters (BPFs) having wide controllable 3-dB fractional bandwidth (FBW). FBW can be varied between 10% and 100%. In addition, filters have the advantages of compactness, sharp rejection, low insertion loss (IL), and low cost. Two prototype fabricated filters of FBW 10.8% and 81.6% show a maximum passband IL of 1.2dB. Filter occupying area is less than 0.25lambda_gtimes0.15lambda _g, where lambda_g is the guided wavelength at the midband frequency

Keywords

band-pass filters; equivalent circuits; metamaterials; microstrip resonators; resonator filters; CSRR; bandpass filters; complementary split ring resonators; controllable fractional bandwidth; metamaterials; microstrip line; midband frequency; Band pass filters; Bandwidth; Costs; Insertion loss; Low pass filters; Microstrip resonators; Optical ring resonators; Passband; Resonator filters; Wideband; Bandpass filter (BPF); complementary split ring resonators (CSRR); metamaterials; microstrip line;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2006.882401

Filename

1704856