Title :
Superconducting Tunable Composite Right/Left-Handed Transmission Lines Using Ferroelectric Thin Films with a Resistive Bias Network
Author :
Wang, Yi ; Lancaster, Michael J. ; Huang, Frederick ; Suherman, Phe M. ; Holdom, Donna M. ; Jackson, Timothy J.
Author_Institution :
Birmingham Univ., Birmingham
Abstract :
Ferroelectric/superconductor thin films (Ba0.05Sr0.95TiO3/YBa2Cu3O7-delta) are used to realize an electrically tunable, low-loss composite right/left-handed transmission line. A resistive line is implemented as both DC bias path and RF choke. The whole device maintains an all-planar configuration. The composite right/left-handed transmission lines are well matched showing a wide pass band. As a phase shifter, the figure-of-merit of the device is evaluated and compared with that of a room-temperature device based on Ba0.5Sr0.5TiO3 and silver. The effect of wire bonding on the performance is discussed.
Keywords :
barium compounds; ferroelectric thin films; high-temperature superconductors; metamaterials; microwave phase shifters; phase shifters; strontium compounds; superconducting microwave devices; superconducting thin films; superconducting transmission lines; tuning; yttrium compounds; Ba0.05Sr0.95TiO3-YBa2Cu3O7; DC bias path; RF choke; all-planar configuration; composite right-left-handed transmission line; ferroelectric-superconductor thin films; phase shifter; resistive bias network; superconducting low-loss tunable transmission lines; tunable low-loss right/left-handed transmission line; wire bonding effect; Bonding; Ferroelectric materials; Inductors; Phase shifters; Radio frequency; Silver; Strontium; Superconducting thin films; Superconducting transmission lines; Wire; Tunable circuits and devices; ferroelectric films; high-temperature superconductors; left-handed transmission lines;
Conference_Titel :
Microwave Symposium, 2007. IEEE/MTT-S International
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0688-9
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2007.380497
