Title :
Integral FMCW radar incorporating an HTSC delay line with user-transparent cryogenic cooling and packaging
Author :
Kapolnek, D.J. ; Aidnik, D.L. ; Hey-Shipton, G. ; James, T.W. ; Fenzi, N.O. ; Skoglund, D.L. ; Nilsson, B.J.L.
Author_Institution :
Superconductor Technol., Inc., Santa Barbara, CA, USA
fDate :
3/1/1993 12:00:00 AM
Abstract :
A self-contained frequency-modulation continuous-wave (FMCW) radar incorporating a compact 2.2-ns broadband superconducting delay line operating at 80 K has been developed. The authors note that this is the first demonstration of an integral microwave system utilizing high-temperature superconductor (HTSC) circuitry incorporating a closed-cycle cooler and a long-life permanently sealed dewar. They discuss development efforts focused on high-frequency packaging techniques compatible with the stringent thermal and electrical performance requirements of HTSC microwave circuitry. They also review the prospects for development of low-cost and reliable closed-cycle cryogenic coolers in the 2-10-W size range.<>
Keywords :
delay lines; frequency modulation; high-temperature superconductors; packaging; radar systems; superconducting microwave devices; 2 to 10 W; 2.2 ns; 80 K; FMCW radar; HTSC delay line; HTSC microwave circuitry; broadband superconducting delay line; closed-cycle cooler; continuous-wave; cryogenic cooling; frequency-modulation; high-frequency packaging; high-temperature superconductor; integral microwave system; packaging; permanently sealed dewar; Cryogenics; Delay lines; Electromagnetic heating; Electronic packaging thermal management; Electronics cooling; Microwave circuits; Radar; Superconducting materials; Superconducting microwave devices; Superconducting transition temperature;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
