## Abstract A new design of wideband microwave bandpass filter based on intercoupled split‐ring resonator is proposed. The split‐ring resonator structure is well‐know for its unique resonance feature that exhibit a negative permeability. By implementing the split‐ring resonator directly on a micros
A tunable bandpass filter based on varactor loaded split-ring resonators
✍ Scribed by Alper Genc; Reyhan Baktur
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 272 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
This article presents an electronically tunable varactor‐loaded microstrip bandpass filter based on the planar split ring resonators (SRRs). The varactor is a reverse‐biased semiconductor diode, and is connected between the concentric rings of the SRR. An individual varactor loaded SRR based bandpass tunable filter module is analyzed. Then a third order tunable filter with 2% fractional bandwidth and a tuning range from 2.11 to 2.34 GHz is assembled from basic filter modules. A prototype filter is designed, fabricated and tested. The maximum tuning range of the prototype filter is 10.2% and the size of the filter is reduced by a factor of 3.5 compared to a coupled line filter. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2394–2396, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24641
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