7 October 2014 A circular-shaped time-delay line inspired by CRLH TL unit cell for UWB operation
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Abstract
This paper presents the design of a circular-shaped ultra-wideband (UWB) time-delay lines inspired by the use of composite right/left-handed transmission line (CRLH TL) unit cells. A rotated version of a conventional CRLH TL unit cell is used as the basic element to achieve UWB operation. For comparison, time-delay lines using the right-handed transmission line (RH TL) and CRLH TL unit cells are also studied, fabricated and tested. Simulation and measurement results show that our proposed time-delay lines have high return loss, low insertion loss, UWB operation and much longer time delays than that of the time-delay line based on RH TL.
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Jun Zhang, S.W. Cheung, Qi Zhu, Long Wu, Yong Zhang, "A circular-shaped time-delay line inspired by CRLH TL unit cell for UWB operation", Proc. SPIE 9252, Millimetre Wave and Terahertz Sensors and Technology VII, 925208 (7 October 2014); doi: 10.1117/12.2067027; https://doi.org/10.1117/12.2067027
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