Planar high-order broad-band bandpass filters based on two-stage quadrature couplers and their digital modeling
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/55323DOI: 10.23919/MIKON54314.2022.9924820
ISBN: 978-83-956020-3-0
Publisher
IEEE
Date
2022-10-25Funders
Agencia Estatal de Investigación
European Commission
Bibliographic citation
Yang, L., Martínez Piqueras, G., Muñoz Ferreras, J.M. & Gómez García, R. 2022, "Planar high-order broad-band bandpass filters based on two-stage quadrature couplers and their digital modeling", in 2022 24th International Microwave and Radar Conference (MIKON), Gdansk, Poland, 2022, pp. 1-5.
Keywords
Bandpass filter (BPF)
Branch-line coupler
Transmission zero (TZ)
Transversal filtering section (TFS)
Two-stage coupler
Wide-band coupler
Wide-band filter
Description / Notes
2022 24th International Microwave and Radar Conference (MIKON), 12-14 September 2022, Gdansk, Poland.
Project
info: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/
info:eu-repo/grantAgreement/EC/H2020/754382/EU/GOT Energy Talent/GET
Document type
info:eu-repo/semantics/conferenceObject
Version
info:eu-repo/semantics/acceptedVersion
Publisher's version
https://doi.org/10.23919/MIKON54314.2022.9924820Rights
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
© 2022 IEEE
Access rights
info:eu-repo/semantics/openAccess
Abstract
Planar two-stage branch-line directional power
couplers are applied in this paper to the design of transversalsignal-interference high-order wide-band bandpass filters
(BPFs) with very-sharp-rejection characteristics. In comparison
with the previously-reported experimental BPF demonstrators
of their precursors—i.e., those using transversal filtering sections (TFSs) with one-stage branch-line couplers loaded by
longer dissimilar stubs—, an enlarged-bandwidth passband
with a higher number of in-band reflection zeros and lower amplitude variation can be obtained. Moreover, multiple transmission zeros (TZs) can be created in the out-of-band region owing
to the intrinsic signal-energy cancelation phenomena of the
transversal signal-interference philosophy, which result in highselectivity filtering capabilities. As further conceptual understanding of the devised two-stage-coupler signal-interference
BPFs, a digital-modeling interpretation for various illustrative
synthesis examples is provided. In addition, for experimentalvalidation purposes, single- and two-TFS-based microstrip
prototypes of wide-band BPFs centered at 2 GHz are manufactured and characterized. In these circuits, inter-digital-type
input/output feeding sections are co-integrated. They allow to
extend the lower/upper stopband bandwidths with regard to
those inherent to their isolated two-stage-coupler-based TFSs.
Files in this item
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Planar_Yang_MIKON_2022.pdf | 1.372Mb |
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Planar_Yang_MIKON_2022.pdf | 1.372Mb |
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