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A structure and design optimization of novel compact microscrip dual-band rat-race coupler with enhanced bandwidth
Abstract
In the letter, a topology of a novel compact wideband dual-band rat-race coupler has been presented along with its computationally efficient design optimization procedure. Reduction of the circuit size has been achieved by meandering transmission lines of the conventional circuit. At the same time, the number of independent geometry parameters has been increased so as to secure sufficient flexibility of the circuit, necessary in the context of its design optimization for dual-band operation. All relevant geometry parameters of the coupler have been obtained by means of automated simulation-driven design optimization process involving surrogate-based techniques. The operating frequencies of the coupler are 1 GHz and 2 GHz, whereas a -18 dB bandwidth is as wide as 22.5 and 11.3 percent for the lower and upper band, respectively. The miniaturization rate is over 37 percent compared to the conventional structure. The design is validated through full-wave EM analysis at fine discretization as well as through physical measurements of the fabricated circuit prototype.
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Authors (3)
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Adrian Bekasiewicz
- Reykjavik University .
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
no. 58,
pages 2287 - 2291,
ISSN: 0895-2477 - Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Bekasiewicz A., Kozieł S., Zieniutycz W.: A structure and design optimization of novel compact microscrip dual-band rat-race coupler with enhanced bandwidth// MICROWAVE AND OPTICAL TECHNOLOGY LETTERS. -Vol. 58, nr. 10 (2016), s.2287-2291
- DOI:
- Digital Object Identifier (open in new tab) 10.1002/mop.30036
- Verified by:
- Gdańsk University of Technology
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