High selectivity dual-wideband bandpass filter with triple-mode stub-loaded stepped-impedance resonators

High selectivity dual-wideband bandpass filter with triple-mode stub-loaded stepped-impedance resonators

A novel high selectivity dual‐wideband microstrip bandpass filter (BPF) with two triple‐mode stub‐loaded stepped‐impedance resonators (SIRs) is proposed in this letter. Either of the SIRs can not only separately generate one passband but also control the passband performance. Because of the intrinsi...

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Veröffentlicht in:Microwave and optical technology letters 2011-12, Vol.53 (12), p.2851-2854
Hauptverfasser: Deng, Hong-Wei, Liu, Bing, Zhao, Yong-Jiu, Chen, Wen, Zhang, Xue-Shun
Format: Artikel
Sprache:eng
Schlagworte:
bandpass filter
Bandpass filters
Bandwidth
dual-wideband
high selectivity
Microwaves
On-line systems
Online
Resonators
Selectivity
Simulation
stub-loaded stepped-impedance resonators
triple-mode
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Zusammenfassung:A novel high selectivity dual‐wideband microstrip bandpass filter (BPF) with two triple‐mode stub‐loaded stepped‐impedance resonators (SIRs) is proposed in this letter. Either of the SIRs can not only separately generate one passband but also control the passband performance. Because of the intrinsic characteristics of the SIRs, four transmission zeros can be generated to improve the selectivity. A dual‐wideband filter with the fractional bandwidth 15.4% and 10.2% is designed and fabricated. The dual‐wideband filter is evaluated by experiment and simulation with good agreement. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2851–2854, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26371
ISSN:0895-2477
1098-2760
1098-2760
DOI:10.1002/mop.26371