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Low-cost wideband double-layer microstrip coupled-line directional coupler with high directivity
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences.
2014 (English)In: Microwave and optical technology letters (Print), ISSN 0895-2477, E-ISSN 1098-2760, Vol. 56, no 7, 1570-1575 p.Article in journal (Refereed) Published
Abstract [en]

In this article, a low-cost double-layer microstrip structure with a gap space between the two substrate layers is used to develop a microstrip coupled-line directional coupler with high directivity. The proposed design shows a high directivity (more than 20 dB) over a wide frequency bandwidth (more than 2 GHz). The double-layer directional coupler, designed on FR4 substrate material at 2.4 GHz provides more than 30 dB isolation. The simulation and measurement results are in good agreement. By applying a simple and low-cost fabrication process and design, the directivity of the directional coupler is enhanced by more than 10 dB compared with a microstrip structure. 

Place, publisher, year, edition, pages
2014. Vol. 56, no 7, 1570-1575 p.
Keyword [en]
directivity, directional coupler, composite right/left handed materials, double-layer microstrip structure, isolation
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hig:diva-18349DOI: 10.1002/mop.28391ISI: 000334916400017Scopus ID: 2-s2.0-84899124444OAI: oai:DiVA.org:hig-18349DiVA: diva2:770024
Available from: 2014-12-09 Created: 2014-12-09 Last updated: 2014-12-09Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
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  • Other style
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Language
  • sv-SE
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  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
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  • text
  • asciidoc
  • rtf