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Type: Journal article
Title: Reconfigurable and tunable S-shaped split-ring resonators and application in band-notched UWB antennas
Author: Horestani, A.
Shaterian, Z.
Naqui, J.
Martin, F.
Fumeaux, C.
Citation: IEEE Transactions on Antennas and Propagation, 2016; 64(9):3766-3776
Publisher: IEEE Publisher
Issue Date: 2016
ISSN: 0018-926X
Statement of
Ali Karami Horestani, Zahra Shaterian, Jordi Naqui, Ferran Martín and Christophe Fumeaux
Abstract: This paper proposes a compact reconfigurable (bandstop/bandpass) and frequency-tunable structure based on S-shaped split-ring resonators (S-SRRs). It is known that an S-SRR coupled to a coplanar waveguide (CPW) provides a stopband in the transmission characteristic of the line. It is shown here that this behavior of the S-SRR can be switched between fundamental resonance and second harmonic response by introduction of a p-i-n diode in the center segment of the S-SRR. Alternatively, if the S-SRR is loaded with a varactor diode instead of a switch, the frequency of the stopband can be continuously tuned from the S-SRRs fundamental resonance frequency to its second harmonic. Furthermore, it is shown that if a pair of shunt p-i-n diodes are introduced across the slots of the host CPW, the structure can be reconfigured from a bandstop to a bandpass structure. Thus, the proposed resonator structure can be used as the building block of reconfigurable (bandstop/bandpass) filters with tunable operating frequency. Finally, to demonstrate a practical application of the proposed structure, an ultrawideband antenna with a tunable band notch is designed and experimentally validated.
Keywords: Reconfigurable antennas; S-shaped split-ring resonator (S-SRR); ultrawideband (UWB) antenna
Rights: © 2016 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
RMID: 0030055661
DOI: 10.1109/TAP.2016.2585183
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Appears in Collections:Electrical and Electronic Engineering publications

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