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An improved CRLH wide-band filter using CSRRs with high stop band rejection
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
2012 (English)In: Progress in Electromagnetics Research Letters, ISSN 1937-6480, Vol. 32, 119-127 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, a filter based on Composite Right/Left Handed (CRLH) structures is presented, wide pass band is obtained due to the balanced CRLH properties. Besides, it has Complementary Split-Ring Resonator (CSRR) units etched on ground plane, which improves signal rejection in its upper stop band. The CSRRs work as a stop band filter in a band near the main pass band of the filter and bring in equivalent negative permittivity. CSRRs and CRLH units occupy the two sides of substrate respectively and have little mutual affection in the pass band, so either structure can be designed independently, without considering the effect from the other. The improvement occupy no additional space, the size is as large as the original filter. Detailed design procedure is illustrated. Good agreements among simulation and measurement results are achieved. In addition, the filter has a semi-enclosed structure and compact size, and the performance is greatly improved.

Place, publisher, year, edition, pages
2012. Vol. 32, 119-127 p.
Keyword [en]
Compact size, Complementary split-ring resonator, Composite right-/left-handed structures, Detailed design, Filter-based, Ground planes, Negative permittivity, Pass bands, Signal rejection, Simulations and measurements, Stop-band filters, Stop-bands, Wide band filter
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-101517Scopus ID: 2-s2.0-84864579609OAI: oai:DiVA.org:kth-101517DiVA: diva2:549273
Note

QC 20120904

Available from: 2012-09-04 Created: 2012-08-30 Last updated: 2012-09-04Bibliographically approved

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