A SHAPED ARTICLE SUITABLE FOR USE AS AN ANTENNA COMPRISING SUPERCONDUCTING MATERIAL (AT A TEMPERATURE NOT LOWER THAN THE BOILING POINT OF LIQUID NITROGEN); AN ARRAY OF SHAPED ARTICLES

摘要

A shaped article having a shape suitable for use as an antenna in which the material from which the antenna is constructed becomes electrically superconducting at a temperature which is not lower than the temperature at which liquid nitrogen boils. The material may be a ceramic material, for example an oxide material, eg YBa2Cu3Ox where x is between 6.5 and 7.2