Multiband magnetless isolators and circulators with reconfigurable bandpass filtering capabilities

dc.contributor.authorSimpson, Dakotah
dc.contributor.authorPsychogiou, Dimitra
dc.contributor.funderNational Science Foundationen
dc.date.accessioned2022-12-07T14:57:37Z
dc.date.available2022-12-07T14:57:37Z
dc.date.issued2022-11-09
dc.date.updated2022-12-07T14:44:18Z
dc.description.abstractThis article reports on the RF design and practical validation of new classes of magnetless multiband isolators and circulators with reconfigurable bandpass filtering capabilities. They are based on transversal frequency-selective signal paths shaped by frequency-tunable and spatiotemporally modulated resonators. Each path creates a passband that can be independently controlled in terms of frequency and direction of propagation. Thus, the overall network may exhibit 1-to- $K$ frequency-reconfigurable non-reciprocal passbands. The operating principles and schematic of the magnetless and reconfigurable filtering isolator concept are first demonstrated through circuit-based simulations of two-and three-path transversal filtering networks (i.e., two-and three-band networks). The independent modulation parameters of the bands are determined through detailed parametric analyses. Next, the concept is extended to the design of magnetless, multiband filtering circulators. The operating and design principles of the circulator are expounded through a circuit schematic and an ideally simulated dual-band example. For practical demonstration purposes, three lumped-element (LE) prototypes, two isolators, and one circulator, shaped by two or three RF signal paths (i.e., two and three passbands), were implemented at very high frequency (VHF) band. They exhibited a maximum in-band isolation (IS) up to 50 dB. Moreover, a frequency tuning of up to 1.22:1 and change of directionality are achieved.en
dc.description.sponsorshipNational Science Foundation (ECCS-1941315)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationSimpson, D. and Psychogiou, D. (2022) 'Multiband magnetless isolators and circulators with reconfigurable bandpass filtering capabilities', IEEE Transactions on Microwave Theory and Techniques. doi: 10.1109/TMTT.2022.3218114en
dc.identifier.doi10.1109/TMTT.2022.3218114en
dc.identifier.eissn1557-9670
dc.identifier.issn0018-9480
dc.identifier.journaltitleIEEE Transactions on Microwave Theory and Techniquesen
dc.identifier.urihttps://hdl.handle.net/10468/13910
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.rights© 2022, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.en
dc.subjectBandpass filter (BPF)en
dc.subjectCirculatoren
dc.subjectCirculatorsen
dc.subjectDual banden
dc.subjectIsolatoren
dc.subjectIsolatorsen
dc.subjectLumped-element (LE) filteren
dc.subjectModulationen
dc.subjectMultibanden
dc.subjectNon-reciprocal filteren
dc.subjectNon-reciprocityen
dc.subjectPassbanden
dc.subjectRadio frequencyen
dc.subjectResonant frequencyen
dc.subjectResonatorsen
dc.subjectSpatiotemporal modulation (STM)en
dc.subjectTunable filteren
dc.titleMultiband magnetless isolators and circulators with reconfigurable bandpass filtering capabilitiesen
dc.typeArticle (peer-reviewed)en
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