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Article: UWB true-time-delay lines inspired by CRLH TL unit cells

TitleUWB true-time-delay lines inspired by CRLH TL unit cells
Authors
KeywordsComposite Right/Left-Handed Transmission Line
Periodic Microstrip Line
True-Time-Delay Line
Ultra-Wideband
Issue Date2011
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/37176
Citation
Microwave And Optical Technology Letters, 2011, v. 53 n. 9, p. 1955-1961 How to Cite?
AbstractThis article presents the design of ultra-wideband (UWB) true-time-delay lines (TTDLs) operating in microwave frequency.The design is inspired by the use of composite right/left-handed transmission line (CRLH TL) unit cells as the true-time-delay elements to obtain large time delay. A rotated version of the CRLH TL unit cell is used to achieve UWB operation. A periodic microstrip line (PML) employing a sawtooth-shaped periodic pattern is used to further increase the time delay. For comparison, TTDLs using the conventional CRLH TL unit cells, the PML and the right-handed transmission line (RH TL) are also designed, optimized and fabricated. Simulation and measurement results show that, for a same length of 60 mm, our proposed TTDL has an ultrawide operating bandwidth and much larger time delay than those of the PML and RH TL ones. Moreover, it has the advantages of high return loss and low insertion loss. Finally, for easily fitting to practical circuits which normally occupy rather even widths and lengths on the printed circuit boards, the proposed straight UWB TTDL is bent to form different shapes such as circular, rectangular and meander. Results show that the performance of the TTDL is not degraded by bending into these shapes. © 2011 Wiley Periodicals, Inc.
Persistent Identifierhttp://hdl.handle.net/10722/155621
ISSN
2015 Impact Factor: 0.545
2015 SCImago Journal Rankings: 0.372
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhang, Jen_US
dc.contributor.authorCheung, SWen_US
dc.contributor.authorYuk, TIen_US
dc.date.accessioned2012-08-08T08:34:25Z-
dc.date.available2012-08-08T08:34:25Z-
dc.date.issued2011en_US
dc.identifier.citationMicrowave And Optical Technology Letters, 2011, v. 53 n. 9, p. 1955-1961en_US
dc.identifier.issn0895-2477en_US
dc.identifier.urihttp://hdl.handle.net/10722/155621-
dc.description.abstractThis article presents the design of ultra-wideband (UWB) true-time-delay lines (TTDLs) operating in microwave frequency.The design is inspired by the use of composite right/left-handed transmission line (CRLH TL) unit cells as the true-time-delay elements to obtain large time delay. A rotated version of the CRLH TL unit cell is used to achieve UWB operation. A periodic microstrip line (PML) employing a sawtooth-shaped periodic pattern is used to further increase the time delay. For comparison, TTDLs using the conventional CRLH TL unit cells, the PML and the right-handed transmission line (RH TL) are also designed, optimized and fabricated. Simulation and measurement results show that, for a same length of 60 mm, our proposed TTDL has an ultrawide operating bandwidth and much larger time delay than those of the PML and RH TL ones. Moreover, it has the advantages of high return loss and low insertion loss. Finally, for easily fitting to practical circuits which normally occupy rather even widths and lengths on the printed circuit boards, the proposed straight UWB TTDL is bent to form different shapes such as circular, rectangular and meander. Results show that the performance of the TTDL is not degraded by bending into these shapes. © 2011 Wiley Periodicals, Inc.-
dc.languageengen_US
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/37176en_US
dc.relation.ispartofMicrowave and Optical Technology Lettersen_US
dc.subjectComposite Right/Left-Handed Transmission Lineen_US
dc.subjectPeriodic Microstrip Lineen_US
dc.subjectTrue-Time-Delay Lineen_US
dc.subjectUltra-Widebanden_US
dc.titleUWB true-time-delay lines inspired by CRLH TL unit cellsen_US
dc.typeArticleen_US
dc.identifier.emailCheung, SW:swcheung@eee.hku.hken_US
dc.identifier.emailYuk, TI:tiyuk@eee.hku.hken_US
dc.identifier.authorityCheung, SW=rp00102en_US
dc.identifier.authorityYuk, TI=rp00210en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1002/mop.26228en_US
dc.identifier.scopuseid_2-s2.0-79959194099en_US
dc.identifier.hkuros207643-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79959194099&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume53en_US
dc.identifier.issue9en_US
dc.identifier.spage1955en_US
dc.identifier.epage1961en_US
dc.identifier.isiWOS:000292600900004-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridZhang, J=36338052000en_US
dc.identifier.scopusauthoridCheung, SW=7202472784en_US
dc.identifier.scopusauthoridYuk, TI=6603685705en_US

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