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Design of multilayer and multiline microstrip directional coupler with closed form relations
Department of Electrical and Computer Engineering, Purdue University Fort Wayne, Fort Wayne, IN, USA..
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.ORCID iD: 0000-0003-2887-049x
2018 (English)In: Progress In Electromagnetics Research C, ISSN 1937-8718, E-ISSN 1937-8718, Vol. 83, p. 1-14Article in journal (Refereed) Published
Abstract [en]

Design, simulation, implementation and measurement results of multiline and multilayer microstrip directional couplers are given with closed form relations. Step-by-step design procedure reflecting the design practice of directional couplers, which requires only information on coupling level, port impedances and operational frequency, is presented. The method based on the synthesis technique applied in the design of conventional two-line microstrip symmetrical directional couplers is adapted to design multilayer directional couplers with the aid of electromagnetic simulators using parametric analysis with curve fitting method. The proposed design method is compared with the measurement results and accuracy is verified. It has been also shown that the directivity of the couplers designed using the multilayer structure is improved significantly. A method such as the one presented in this paper can be used to design multilayer two-line and three-line directional couplers which can be integrated to the front end of an RFID systems to provide the required isolation between transmitter and receiver and prevent signal leakage due to use of conventional circulators.

Place, publisher, year, edition, pages
Electromagnetics Academy , 2018. Vol. 83, p. 1-14
Keywords [en]
Curve fitting, Directional couplers, Elastic moduli, Electromagnetic simulation, Multilayers, Optical waveguides, Signal receivers, Closed-form relations, Curve fitting methods, Electromagnetic simulators, Multilayer microstrip, Multilayer structures, Operational frequency, Parametric -analysis, Transmitter and receiver, Design
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hig:diva-26736Scopus ID: 2-s2.0-85045089592OAI: oai:DiVA.org:hig-26736DiVA, id: diva2:1213067
Available from: 2018-06-04 Created: 2018-06-04 Last updated: 2018-06-04Bibliographically approved

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Rönnow, Daniel

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CiteExportLink to record
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Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
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  • Other style
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Language
  • sv-SE
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  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
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