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Abstract
A robust simulation-driven design methodology of microwave circuits with complex topologies has been presented. The general method elaborated is suitable for a wide class of N-port unconventional microwave circuits constructed as a deviation from classic design solutions. The key idea of the approach proposed lies in an iterative redesign of a conventional circuit by a sequential modification and optimisation of its atomic building blocks. The speed and accuracy of the method presented has been acquired by solving a number of simple optimisation problems through surrogate-based optimisation (SBO) techniques, which offer a satisfactory approximation of the optimal design solution. Two exemplary designs have been supplied to verify the method introduced. An abbreviated wideband quarter-wave impedance matching transformer (MT) and a miniaturised hybrid branch-line coupler (BLC) have been developed. Diminished dimensions of the circuits under construction have been achieved by means of compact microstrip resonant cells (CMRCs). As a SBO engine, an implicit space mapping (ISM) technique has been utilised. The final results have been acquired in only a fraction of time that is necessary for a direct EM optimisation to generate competitive results. An experimental validation of the method proving its high utility has been provided.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
IET Microwaves Antennas & Propagation
no. 6,
pages 1616 - 1622,
ISSN: 1751-8725 - Language:
- English
- Publication year:
- 2012
- Bibliographic description:
- Bekasiewicz A., Kurgan P., Kitliński M.: A new approach to a fast and accurate design of microwave circuits with complex topologies // IET Microwaves Antennas & Propagation. -Vol. 6, nr. Iss. 14 (2012), s.1616-1622
- Verified by:
- Gdańsk University of Technology
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