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Abstract
In this paper, a novel structure and design procedure of a miniaturized microstrip rat-race coupler (RRC) is described. Small size of the RRC is achieved by folding the transmission lines of the conventional circuit into its interior, as well as by implementation of the structure on three layers. The final size of the coupler realized for the operating frequency of 1 GHz is only 220 mm2, which gives over 95% footprint reduction w.r.t. a reference RRC. At the same time, rigorous optimization of coupler dimensions using variable-fidelity EM models permits rapid EM-driven design closure with the final design featuring 240 MHz bandwidth, equal power split, and obtained at the computational cost corresponding to only 12 simulations of the circuit at the high-fidelity level.
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- Copyright (2018 IEEE)
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- Category:
- Conference activity
- Type:
- materiały konferencyjne indeksowane w Web of Science
- Title of issue:
- 2018 International Applied Computational Electromagnetics Society Symposium (ACES) strony 1 - 2
- Language:
- English
- Publication year:
- 2018
- Bibliographic description:
- Bekasiewicz A., Kozieł S..: Novel structure and EM-driven design of miniaturized microstrip rat-race coupler, W: 2018 International Applied Computational Electromagnetics Society Symposium (ACES), 2018, ,.
- DOI:
- Digital Object Identifier (open in new tab) 10.23919/ropaces.2018.8364212
- Bibliography: test
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show (7) hide
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- A. Bekasiewicz and P. Kurgan, "A compact microstrip rat-race coupler constituted by nonuniform transmission lines," Microwave Opt. Tech. Lett., vol. 56, no. 4, pp. 970-974, 2014. open in new tab
- S. Koziel, A. Bekasiewicz, and P. Kurgan, "Rapid multi-objective simulation-driven design of compact microwave circuits," IEEE Microwave Wireless Comp. Lett., vol. 25, no. 5, pp. 277-279, 2015. open in new tab
- C. H. Tseng and C. L. Chang, "A rigorous design methodology for compact planar branch-line and rat-race couplers with asymmetrical T- structures," IEEE Trans. Microwave Theory Techn., vol. 60, no. 7, pp. 2085-2092, July 2012. open in new tab
- W. Song, H. Deguchi, and M. Tsuji, "A novel heptagonal microstrip rat- race hybrid coupler with harmonic suppression and size reduction," IEEE Int. Symp. Ant. Prop., pp. 1-2, 2012. open in new tab
- A. Bekasiewicz and S. Koziel, "Miniaturised dual-band branch-line coupler," Electronics Lett., vol. 51, no. 10, pp. 769-771, 2015. open in new tab
- S. Koziel and A. Bekasiewicz, "Expedited simulation-driven design optimization of UWB antennas by means of response features," Int. J. RF Microwave CAE, vol. 27, no. 6, pp. 1-8, 2017. open in new tab
- Verified by:
- Gdańsk University of Technology
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