Compact Ultra-Wideband Bandpass Filter With Improved Upper Stopband

Author

Mondal, Priyanka ; Mandal, Mrinal Kanti ; Chakrabarty, Ajay

Author_Institution

Indian Inst. of Technol., Kharagpur

Volume

17

Issue

9

fYear

2007

Firstpage

643

Lastpage

645

Abstract

In this letter, a design of a compact bandpass filter with wide upper stopband is presented for the ultra-wideband communication systems. The filter structure is composed of a modified square slot-line resonator with parallel microstrip feed lines. Improved upper stopband is obtained by exploiting the frequency dispersive coupling behavior between the feed lines and the resonator. Measurements show that the 20.9 dB upper stopband extends at least up to 20 GHz. Filter occupying area is 0.26lambdag times 0.28g, lambdag being the microstrip line guided wavelength at 6.85 GHz.

Keywords

band-pass filters; microstrip lines; resonators; ultra wideband communication; compact bandpass filter; compact ultra-wideband bandpass filter; frequency dispersive coupling; microstrip line guided wavelength; parallel microstrip feed lines; slot-line resonator; ultra-wideband communication systems; upper stopband; Band pass filters; FCC; Feeds; Frequency; Microstrip filters; Microstrip resonators; Passband; Resonance; Resonator filters; Ultra wideband technology; Bandpass filter (BPF); microstrip line; slot-line resonator (SLR); stopband; ultra wide-band (UWB);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2007.903437

Filename

4295130