Title :
A wideband time-delay line inspired by CRLH TL unit cell
Author :
Zhang, J. ; Cheung, S.W. ; Yuk, T.I.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
This paper presents the design of ultra-wideband time-delay lines in microwave frequency inspired by the composite right/left-handed transmission line (CRLH TL) unit cell. A rotated version of the conventional CRLH TL unit cell is used to achieve an ultrawide bandwidth. For comparison, the time-delay lines using the conventional CRLH TL unit cells, right-handed transmission line (RH TL) and periodic microstrip line (PML) are also designed, optimized and fabricated. Simulation and measurement results show that, for the same length of 60 mm, our proposed time-delay line has an ultrawide bandwidth and much longer time delay than those of the RH TL and PML ones. It also has the advantages of high return loss and low insertion loss.
Keywords :
delay lines; metamaterials; microstrip lines; transmission lines; composite right-left-handed transmission line; insertion loss; periodic microstrip line; return loss; wideband time-delay line; Bandwidth; Delay effects; Fingers; Frequency measurement; Loss measurement; Power transmission lines; Time measurement;
Conference_Titel :
Advanced Technologies for Communications (ATC), 2010 International Conference on
Conference_Location :
Ho Chi Minh City
Print_ISBN :
978-1-4244-8875-9
DOI :
10.1109/ATC.2010.5672734
