A circular-shaped time-delay line inspired by CRLH TL unit cell for UWB operation

Jun Zhang; S.W. Cheung; Qi Zhu; Long Wu; Yong Zhang

doi:10.1117/12.2067027

7 October 2014 A circular-shaped time-delay line inspired by CRLH TL unit cell for UWB operation

Jun Zhang, S.W. Cheung, Qi Zhu, Long Wu, Yong Zhang

Proceedings Volume 9252, Millimetre Wave and Terahertz Sensors and Technology VII; 925208 (2014) https://doi.org/10.1117/12.2067027
Event: SPIE Security + Defence, 2014, Amsterdam, Netherlands

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.

Citation Download Citation

Jun Zhang, S.W. Cheung, Qi Zhu, Long Wu, and 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); https://doi.org/10.1117/12.2067027

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