Title :
A superconducting RF resonator in HF range and its multi-pole filter applications
Author :
Gao, E. ; Sahba, S. ; Hui Xu ; Ma, Q.Y.
Author_Institution :
Dept. of Electr. Eng., Columbia Univ., New York, NY, USA
fDate :
6/1/1999 12:00:00 AM
Abstract :
We report a new RF resonator that operates at high frequency (HF, 3-30 MHz) of electromagnetic spectrum. The resonator is fabricated on a double-sided HTS (YBCO) thin film on a single 2" LAO substrate. The resonator is of smaller size and has a higher Q-value than conventional copper resonators. At temperatures below 77 K the Q-value of the resonator is above 40,000. A 3-pole filter is made by using 3 of this resonator which demonstrates a low insertion loss. This report will discuss the design, fabrication, RF characteristics (return and insertion loss), and the Q-value of the devices in detail. The simulated model of the RF characteristics of the devices will also be given.
Keywords :
Q-factor; barium compounds; high-temperature superconductors; radiofrequency filters; resonator filters; superconducting filters; superconducting resonators; superconducting thin films; yttrium compounds; 3 to 30 MHz; HF range; Q-value; YBCO HTS thin film; YBaCuO; insertion loss; multi-pole filter; return loss; simulation model; superconducting RF resonator; Electromagnetic spectrum; Fabrication; Hafnium; High temperature superconductors; Insertion loss; Radio frequency; Resonator filters; Substrates; Superconducting thin films; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
