Varactor-tunable second-order bandpass frequency-selective surface with embedded bias network

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dc.contributor.authorEbrahimi, A.
dc.contributor.authorShen, Z.
dc.contributor.authorWithayachumnankul, W.
dc.contributor.authorAl-Sarawi, S.F.
dc.contributor.authorAbbott, D.
dc.date.issued2016
dc.description.abstractA varactor-tunable second-order bandpass frequency-selective surface (FSS) for microwave frequencies is presented in this article. The FSS is composed of three stacked metallic layers. The wire grid in each layer in combination with metallic vias provides the bias for the varactors. This configuration eliminates the need for a dedicated bias network for the varactors, and thus avoids undesirable responses associated with the added bias grid. An equivalent circuit model together with an analytical design method is provided to simplify the design procedure of the FSS. The performance of the proposed structure is experimentally validated in a parallel-plate waveguide setup. Measurements show that by changing the varactor capacitance from 0.12 to 0.38 pF, the center frequency of the filter is tuned from 5.2 to 3.7 GHz with a consistent fractional bandwidth of 9% and with an insertion loss between 3 and 6 dB.
dc.identifier.citationIEEE Transactions on Antennas and Propagation, 2016; 64(5):1672-1680
dc.identifier.doi10.1109/TAP.2016.2537378
dc.identifier.issn0018-926X
dc.identifier.issn1558-2221
dc.identifier.orcidWithayachumnankul, W. [0000-0003-1155-567X]
dc.identifier.orcidAl-Sarawi, S.F. [0000-0002-3242-8197]
dc.identifier.orcidAbbott, D. [0000-0002-0945-2674]
dc.identifier.urihttp://hdl.handle.net/2440/108247
dc.language.isoen
dc.publisherIEEE
dc.source.urihttps://doi.org/10.1109/tap.2016.2537378
dc.titleVaractor-tunable second-order bandpass frequency-selective surface with embedded bias network
dc.typeJournal article
pubs.publication-statusPublished

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