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Article: Direct synthesis of transmission line low-/high-pass filters with series stubs

TitleDirect synthesis of transmission line low-/high-pass filters with series stubs
Authors
Issue Date2009
PublisherThe Institution of Engineering and Technology. The Journal's web site is located at http://www.iee.org/Publish/Journals/Profjourn/Proc/map/
Citation
Iet Microwaves, Antennas And Propagation, 2009, v. 3 n. 4, p. 654-662 How to Cite?
AbstractA direct synthesis procedure is presented for the design of transmission line low-/high-pass filters with series stubs. The proposed prototype consists of a cascade of series stubs of electrical length θ c alternating with uniform transmission lines of electrical length 2θ. An exact network synthesis technique is applied on the fully frequency-distributed transmission line filter structures. By short-circuiting these series stubs, a low-pass prototype can be established to synthesise the filters with both predictable in-band and out-of-band behaviours. Instead, if the series stubs are open-circuited, a quasi-high-pass or wide band-pass filter can be designed with specified frequency bandwidth and centre frequency. Based on the formulation of a transfer function, a set of closed-form design formula is derived so that the synthesis design can be carried out for the proposed filters with Chebyshev equal-ripple frequency responses in the concerned low-and high-pass bands. As design examples, two five-pole planar filters based on the low-and high-pass topologies are implemented by using hybrid slotline and coplanar-waveguide structures. After final optimisation is executed via full-wave electromagnetic software to take all the discontinuities into accounts, two designed filters are fabricated and measured to verify the proposed synthesis approach and confirm the theoretical predictions. © The Institution of Engineering and Technology 2009.
Persistent Identifierhttp://hdl.handle.net/10722/155538
ISSN
2015 Impact Factor: 0.817
2015 SCImago Journal Rankings: 0.755
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Ren_US
dc.contributor.authorSun, Sen_US
dc.contributor.authorZhu, Len_US
dc.date.accessioned2012-08-08T08:34:00Z-
dc.date.available2012-08-08T08:34:00Z-
dc.date.issued2009en_US
dc.identifier.citationIet Microwaves, Antennas And Propagation, 2009, v. 3 n. 4, p. 654-662en_US
dc.identifier.issn1751-8725en_US
dc.identifier.urihttp://hdl.handle.net/10722/155538-
dc.description.abstractA direct synthesis procedure is presented for the design of transmission line low-/high-pass filters with series stubs. The proposed prototype consists of a cascade of series stubs of electrical length θ c alternating with uniform transmission lines of electrical length 2θ. An exact network synthesis technique is applied on the fully frequency-distributed transmission line filter structures. By short-circuiting these series stubs, a low-pass prototype can be established to synthesise the filters with both predictable in-band and out-of-band behaviours. Instead, if the series stubs are open-circuited, a quasi-high-pass or wide band-pass filter can be designed with specified frequency bandwidth and centre frequency. Based on the formulation of a transfer function, a set of closed-form design formula is derived so that the synthesis design can be carried out for the proposed filters with Chebyshev equal-ripple frequency responses in the concerned low-and high-pass bands. As design examples, two five-pole planar filters based on the low-and high-pass topologies are implemented by using hybrid slotline and coplanar-waveguide structures. After final optimisation is executed via full-wave electromagnetic software to take all the discontinuities into accounts, two designed filters are fabricated and measured to verify the proposed synthesis approach and confirm the theoretical predictions. © The Institution of Engineering and Technology 2009.en_US
dc.languageengen_US
dc.publisherThe Institution of Engineering and Technology. The Journal's web site is located at http://www.iee.org/Publish/Journals/Profjourn/Proc/map/en_US
dc.relation.ispartofIET Microwaves, Antennas and Propagationen_US
dc.titleDirect synthesis of transmission line low-/high-pass filters with series stubsen_US
dc.typeArticleen_US
dc.identifier.emailSun, S:sunsheng@hku.hken_US
dc.identifier.authoritySun, S=rp01431en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1049/iet-map.2008.0259en_US
dc.identifier.scopuseid_2-s2.0-69249087766en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-69249087766&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume3en_US
dc.identifier.issue4en_US
dc.identifier.spage654en_US
dc.identifier.epage662en_US
dc.identifier.isiWOS:000267060100014-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLi, R=7404723915en_US
dc.identifier.scopusauthoridSun, S=7404509453en_US
dc.identifier.scopusauthoridZhu, L=7404201926en_US

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