| abstract |
A superconducting electronic circuit device, useful when impedance matching is desired, especially suited to microwave frequencies, consisting of a thin dielectric layer (12) with superconducting layers (10,14) on both sides. A superconductor such as Yttrium Barium Copper Oxide (YBCO) is formed on a first substrate (12) such as lanthanum aluminate. A protective layer (16) like gold is deposited on the YBCO and a second carrier substrate (20) is bonded to the protected YBCO. The first substrate (12) is then thinned into a thin dielectric film and a second layer (14) of superconductor is epitaxially grown thereon to create the desired circuits. |