By Topic

Tunable high temperature superconductor microstrip resonators

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
J. A. Beall ; Nat. Inst. of Stand. & Technol., Boulder, CO, USA ; R. H. Ono ; D. Galt ; J. C. Price

Electrically tunable high-temperature superconductor microstrip resonators incorporating YBa/sub 2/Cu/sub 3/O/sub 7-x/ superconductor and SrTiO/sub 3/ ferroelectric films have been fabricated and characterized. The resonators consist of two collinear microstrip line sections separated by a 5- mu m gap. The capacitance of the gap influences the frequencies of the odd-order coupled resonances. Inductively choked DC bias lines are attached to each line section so that a bias voltage can be applied to the gap. When the gap is filled with a ferroelectric material, the odd resonances can be tuned. Frequency shifts of 300 MHz have been observed with a bias voltage of 50 V for resonances at 5.6 GHz and 11.6 GHz. The tunability is independent of temperature from 4 K to 80 K. An upper bound for the loss tangent of the SrTiO/sub 3/ capacitor is extracted from the resonance Q, and tan delta <0.07 at 4 K is found.<>

Published in:

Microwave Symposium Digest, 1993., IEEE MTT-S International

Date of Conference:

14-18 June 1993