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Design of High-Dire...
Design of High-Directivity Wideband Microstrip Directional Coupler With Fragment-Type Structure
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- Sidén, Johan, 1975- (författare)
- Mittuniversitetet,Avdelningen för elektronikkonstruktion
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- Wang, Gang (författare)
- Univ Sci & Technol China, Dept Elect Engn & Informat Sci, Hefei 230027, Peoples R China
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- Wang, Lu (författare)
- Univ Sci & Technol China, Dept Elect Engn & Informat Sci, Hefei 230027, Peoples R China
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(creator_code:org_t)
- 2015
- 2015
- Engelska.
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Ingår i: IEEE transactions on microwave theory and techniques. - 0018-9480 .- 1557-9670. ; 63:12, s. 3962-3970
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A novel design for a microstrip wideband directional coupler is proposedby using fragment-type structures. The use of a fragment-type structuremay provide satisfactory flexibility and excellent performance. For agiven design space, a fragment-type wideband coupler can be designed byfirst gridding the space into fragment cells and then metallizing thefragment cells selected by a multi-objective optimization searchingalgorithm, such as a multi-objective evolutionary algorithm based ondecomposition combined with enhanced genetic operators. Fordemonstration, a 20-dB wideband microstrip directional coupler isdesigned and verified by test. A 45% bandwidth centered at 2 GHz hasbeen measured in terms of maximum variation of 0.5 dB in the 20-dBcoupling level. In the operation band, the designed coupler hasdirectivity above 37 dB, and a maximum directivity of 48 dB at 2 GHz. Inaddition, some technique aspects related to multi-objective optimizationsearching, such as effects of design space, control of coupling level,and efficiency consideration for optimization searching, are furtherdiscussed. Fragment-type structures may also be used to designhigh-performance wideband directional couplers of tight coupling level.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Fragment-type structure
- microstrip directional coupler wideband design
- multi-objective evolutionary algorithm based on decomposition combined with enhanced genetic operators (MOEA/D-GO)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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