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

Abstract

This paper presents the design of a rectangular-shaped ultra-wideband (UWB) time-delay line 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 elements 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.

Novel wide‐stopband bandpass filter with good frequency selectivity based on composite right/left handed transmission line

“…It combines the traditional transmission‐line theory with the novel structure and characteristics of the artificial material. Various microwave components have been proposed and used for practical applications based on such composite right/left‐handed transmission line (CRLH‐TL) approach [8–19]. All these applications based on the CRLH‐TL have demonstrated several unique features that cannot be realized by conventional right‐handed (RH) transmission lines.…”