Title :
Ferrite-superconductor microwave phase shifters
Author :
Dionne, Gerald F. ; Gates, D.E. ; Temme, Donald H.
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
fDate :
11/1/1994 12:00:00 AM
Abstract :
Experimental ferrite phase shifters that utilize superconductor circuits with very low conduction losses are described. Magnetic flux is confined to a closed path, thereby avoiding deterioration of the superconducting properties that occurs when magnetic fields enter the superconductor. X-band differential phase shifters with meanderline circuits fabricated from niobium superconductors operated at 4 K have produced figures of merit exceeding 1000 deg/dB. The designs are adaptable to high-Tc superconductors
Keywords :
ferrite phase shifters; magnetic microwave devices; microstrip circuits; microwave phase shifters; superconducting microwave devices; 4 K; Nb; X-band differential phase shifters; ferrite phase shifters; figures of merit; high temperature superconductors; meanderline circuits; microwave phase shifters; superconductor circuits; Dielectric substrates; Ferrites; Magnetic confinement; Magnetic flux; Niobium; Phase shifters; Superconducting magnets; Superconducting microwave devices; Superconducting transmission lines; Toroidal magnetic fields;
Journal_Title :
Magnetics, IEEE Transactions on
