(YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}},Au)/SrTiO{sub 3}/LaAlO{sub 3} thin film conductor/ferroelectric coupled microstripline phase shifters for phased array applications
- National Aeronautics and Space Administration, Lewis Research Center, Cleveland, Ohio 44135 (United States)
- SCT, Golden, Colorado 80401 (United States)
We report on the design, fabrication, and testing of novel YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}/SrTiO{sub 3}/LaAlO{sub 3} (YBCO/STO/LAO) and Au/SrTiO{sub 3}/LaAlO{sub 3} (Au/STO/LAO) coupled microstrip line phase shifters (CMPS). These CMPS were tested at frequencies within the Ku and K bands (12{endash}20 GHz), at temperatures from 24 to 77 K, and at dc voltages (V{sub dc}) from zero to 350 V. A relative insertion phase shift ({Delta}{phi}) of 390{degree} was measured for an eight-element YBCO/STO/LAO CMPS at V{sub dc}=350V, 16 GHz, and 40 K. At 77 K, a {Delta}{phi}{approximately}260{degree} was obtained for the CMPS at the same bias and frequency. Both results correspond to an effective coupling length of 0.33 cm. At both temperatures, the phase shifter exhibits a figure of merit of {approximately}30{degree}/dB. To our knowledge, these are the best results published so far at these frequencies where miniaturization, insertion loss, and phase delay are key considerations. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 552935
- Journal Information:
- Applied Physics Letters, Vol. 71, Issue 21; Other Information: PBD: Nov 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dielectric properties of thin film SrTiO{sub 3} grown on LaAlO{sub 3} with YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} electrodes
Electrically tunable coplanar transmission line resonators using YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}/SrTiO{sub 3} bilayers
Related Subjects
36 MATERIALS SCIENCE
SUPERCONDUCTING DEVICES
MICROWAVE POWER TRANSMISSION
HIGH-TC SUPERCONDUCTORS
PHASE SHIFT
LANTHANUM COMPOUNDS
STRONTIUM COMPOUNDS
GOLD
YTTRIUM COMPOUNDS
BARIUM COMPOUNDS
SUPERCONDUCTING FILMS
YTTRIUM OXIDES
BARIUM OXIDES
COPPER OXIDES
STRONTIUM OXIDES
TITANIUM OXIDES
LANTHANUM OXIDES
FERROELECTRIC MATERIALS
TEMPERATURE DEPENDENCE
GHZ RANGE 01-100