Title :
High-T/sub c/ superconducting monolithic phase shifter
Author :
Takemoto-Kobayashi, J.H. ; Jackson, C.M. ; Pettiette-Hall, C.L. ; Burch, J.F.
Author_Institution :
TRW Space & Technol. Group, Redondo Beach, CA, USA
fDate :
3/1/1992 12:00:00 AM
Abstract :
A high temperature superconducting (HTS) X-band phase shifter using a distributed Josephson inductance (DJI) approach was designed and fabricated. Phase swings of over 60 degrees were measured at 65 K and below, with measurable phase shifts at temperatures above 77 K. High quality HTS films and superconducting quantum interference devices (SQUIDs) were deposited by laser ablation. A total of 40 HTS step edge SQUIDs were successfully integrated into a monolithic HTS circuit to produce a phase shifter in a resonant configuration. The magnitude of the Josephson inductance is calculated and a lumped element model is compared to measurements.<>
Keywords :
SQUIDs; barium compounds; high-temperature superconductors; microwave integrated circuits; phase shifters; strip line components; superconducting integrated circuits; yttrium compounds; LiAlO/sub 3/ substrate; SQUIDs; X-band phase shifter; YBaCuO; distributed Josephson inductance; high temperature superconductor; laser ablation; lumped element model; resonant configuration; superconducting monolithic phase shifter; High temperature superconductors; Inductance; Integrated circuit measurements; Interference; Laser ablation; Phase measurement; Phase shifters; SQUIDs; Superconducting devices; Superconducting films;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
