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dc.contributor.authorYang, Li 
dc.contributor.authorMalki, Mohamed 
dc.contributor.authorMuñoz Ferreras, José María 
dc.contributor.authorGómez García, Roberto
dc.identifier.bibliographicCitationYang, L., Malki, M., Muñoz Ferreras, J.M. & Gómez García, R. 2022, "Balanced quasi-elliptic-type dual-passband filters using planar transversal coupled-line sections and their digital modeling", International Journal of Microwave and Wireless Technologies, DOI: 10.1017/s175907872200071X.
dc.description.abstractA class of balanced dual-band bandpass filters (BPFs) with planar transversal-signal-interference coupled-line sections is reported. In their building balanced dual-band BPF stage under differential-mode excitation, a second-order quasi-elliptic-type dual-band bandpass filtering transfer function is obtained. Specifically, from the transversal interaction among their two open-ended and virtually-short-ended half-wavelength coupled-line paths, sharp-rejection differential-mode dual passbands with several out-of-band transmission zeros at both sides are realized. To attain high common-mode suppression levels within the differential-mode passbands, two open-ended line segments are connected at the symmetry plane of the devised balanced dual-band BPF stage. Moreover, higher-order schemes based on in-series-cascaded multi-stage designs to further increase differential-mode selectivity and in-band common-mode rejection are illustrated. The operational principles and parametric-analysis design rules of the engineered transversal-coupled-line-based balanced dual-band BPF approach are detailed. Additionally, for a rigorous interpretation of their zero/pole characteristics, a digital-modeling framework is applied to them to connect RF balanced filters with their discrete-time versions. For practical-validation purposes, a microstrip prototype of two-stage/fourth-order balanced dual-band BPF is built and tested. It exhibits measured differential-mode dual passbands with center frequencies of 1.464 GHz and 2.294 GHz, 3-dB fractional bandwidths of 8.74% and 9.68%, and in-band common-mode rejection levels above 23.16 dB and 31.36 dB, respectively.en
dc.description.sponsorshipEuropean Commissionen
dc.description.sponsorshipAgencia Estatal de Investigaciónes_ES
dc.publisherCambridge University Press
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights© 2022 The authors
dc.subjectBalanced filteren
dc.subjectBandpass filter (BPF)en
dc.subjectDual-band filteren
dc.subjectMicrostrip filteren
dc.subjectParallel coupled lineen
dc.subjectPlanar filteren
dc.subjectSignal-interference filteren
dc.subjectTransmission zero (TZ)en
dc.subjectTransversal sectionen
dc.titleBalanced quasi-elliptic-type dual-passband filters using planar transversal coupled-line sections and their digital modelingen
dc.contributor.affiliationUniversidad de Alcalá. Departamento de Teoría de la Señal y Comunicacioneses_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/754382/EU/GOT Energy Talent/GETen
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-116983RB-I00/ES/NEW-GENERATION MICROWAVE PASSIVE COMPONENTS FOR ADVANCED WIRELESS-COMMUNICATIONS%2FRF-SENSING PLATFORMS/en
dc.identifier.publicationtitleInternational Journal of Microwave and Wireless Technologies

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