Title :
Design of time delay lines with periodic microstrip line and composite right/left-handed transmission line
Author :
Zhang, Jun ; Zhu, Qi ; Jiang, Qi ; Fu, Danqing ; Xu, Shanjia
Author_Institution :
Dept. of EEIS, University of Sci. & Tech. of China, Hefei 230027, China
Abstract :
Based on the sharp relationship between Ang(S21) of CRLH-TLs and working frequency, CRLH-TLs TDLs with large time delays are proposed. Meanwhile, sawtooth-shaped PMLs are selected to realize tiny time delays. Finally, a 9-bit time delay module consisting of CRLH-TLs, sawtooth-shaped PMLs and OMLs as well as eighteen SPDTs is designed and fabricated. By selecting different states of SPDTs, time delays from 1.2ps up to 613.2ps can be achieved. The comparisons of simulation and experimental results validated the present design. Besides, the present time delay module possesses other advantages such as compactness, low loss, precise and easy fabrication.
Keywords :
Delay effects; Delay lines; Fabrication; Frequency; Microstrip; Phased arrays; Radar signal processing; Signal design; Switches; Transmission lines;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4958664
