Bandpass filter with wide stopband using loaded short-section of parallel-coupled lines

Marimuthu, Jayaseelan, Abbosh, Amin M. and Henin, Bassem (2015) Bandpass filter with wide stopband using loaded short-section of parallel-coupled lines. Microwave and Optical Technology Letters, 57 12: 2824-2829. doi:10.1002/mop.29441


Author Marimuthu, Jayaseelan
Abbosh, Amin M.
Henin, Bassem
Title Bandpass filter with wide stopband using loaded short-section of parallel-coupled lines
Journal name Microwave and Optical Technology Letters   Check publisher's open access policy
ISSN 1098-2760
0895-2477
Publication date 2015-12-01
Year available 2015
Sub-type Article (original research)
DOI 10.1002/mop.29441
Open Access Status Not yet assessed
Volume 57
Issue 12
Start page 2824
End page 2829
Total pages 6
Place of publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Language eng
Abstract A compact third order bandpass filter (BPF) using dual and trimode resonators is proposed. To achieve compact size with wide and highly attenuated stopband with achievable fractional bandwidth (FBW), the proposed filter is designed using a dual-mode resonator in the form of a low-impedance feeding network and a trimode resonator formed using a miniaturized (one twelfth of a wavelength) parallel-coupled structure loaded with folded open-ended stubs of high/low-impedances and a semiannular resonator. To enable using easy to manufacture dimensions, the coupled structure of the resonator is designed to have moderate mode impedances. A complete design procedure for the filter is explained. Finally, a compact penta-mode BPF with 35% FBW with sharp upper and lower cutoffs is built and tested. The simulated and measured performance of the filter show less than 0.3 dB insertion loss in the passband and more than 32 dB attenuation across a wide stopband with sharp upper (107 dB/GHz) and lower cutoff (96 dB/GHz) skirts.
Keyword Bandpass filter
Parallel coupled microstrip line
Broadband filter
Loaded short-section
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Information Technology and Electrical Engineering Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 1 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 2 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Sun, 27 Dec 2015, 10:16:50 EST by System User on behalf of Scholarly Communication and Digitisation Service