Accurate isolation networks in quadrature couplers and power dividers

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buir.contributor.authorSütbaş, Batuhan
buir.contributor.authorÖzbay, Ekmel
buir.contributor.authorAtalar, Abdullah
buir.contributor.orcidSütbaş, Batuhan|0000-0001-8124-5760
buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828
buir.contributor.orcidAtalar, Abdullah|0000-0002-1903-1240
dc.citation.epage1152en_US
dc.citation.issueNumber4en_US
dc.citation.spage1148en_US
dc.citation.volumeNumber68en_US
dc.contributor.authorSütbaş, Batuhan
dc.contributor.authorÖzbay, Ekmel
dc.contributor.authorAtalar, Abdullah
dc.date.accessioned2022-01-28T08:00:01Z
dc.date.available2022-01-28T08:00:01Z
dc.date.issued2021
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractWhen quadrature couplers and power dividers are implemented in integrated circuits, accurate isolation networks can not be realized due to the nonideal resistors and the process variations. We present an isolation network design technique which cancels the resistor parasitic effects and also increases the tolerance to variations in the resistance values. A Lange coupler and a power divider are designed at Ka-band using the proposed accurate and process-tolerant isolation networks. The improvement is analytically shown and empirically verified with our in-house GaN-based microstrip MMIC process. For the coupler, the measured return losses and isolation are better than 20 dB from DC to 40 GHz. The power divider achieves 20 dB return losses and isolation in a fractional bandwidth of 50%. Both devices maintain 20 dB performance even when the variation in sheet resistance is as high as 30%.en_US
dc.description.provenanceSubmitted by Evrim Ergin (eergin@bilkent.edu.tr) on 2022-01-28T08:00:01Z No. of bitstreams: 1 Accurate_isolation_networks_in_quadrature_couplers_and_power_dividers.pdf: 1208390 bytes, checksum: 6772cbd16dd1be29322fa346ce04b10c (MD5)en
dc.description.provenanceMade available in DSpace on 2022-01-28T08:00:01Z (GMT). No. of bitstreams: 1 Accurate_isolation_networks_in_quadrature_couplers_and_power_dividers.pdf: 1208390 bytes, checksum: 6772cbd16dd1be29322fa346ce04b10c (MD5) Previous issue date: 2021en
dc.identifier.doi10.1109/TCSII.2020.3035667en_US
dc.identifier.eissn1558-3791
dc.identifier.issn1549-7747
dc.identifier.urihttp://hdl.handle.net/11693/76861
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttps://doi.org/10.1109/TCSII.2020.3035667en_US
dc.source.titleIEEE Transactions on Circuits and Systems II: Express Briefsen_US
dc.subjectAccurateen_US
dc.subjectParasitic effecten_US
dc.subjectWidebanden_US
dc.subjectQuadrature coupleren_US
dc.subjectPower divideren_US
dc.subjectIsolationen_US
dc.subjectSheet resistanceen_US
dc.subjectProcesstemperature variationen_US
dc.subjectToleranceen_US
dc.subjectIntegrated circuiten_US
dc.titleAccurate isolation networks in quadrature couplers and power dividersen_US
dc.typeArticleen_US

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Nanotechnology Research Center (NANOTAM)
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Department of Physics
Institute of Materials Science and Nanotechnology (UNAM)