Title :
High temperature superconductors and their application in passive antenna systems
Author :
Williams, Jeffery T. ; Long, Stuart A.
Author_Institution :
Dept. of Electr. Eng., Houston Univ., TX, USA
Abstract :
The basic physics of superconductivity is reviewed and related to the high-temperature superconductors. The high-frequency characteristics of the new materials are examined, and the two-fluid model is introduced and used to derive an empirical expression for the conductivity of superconductors. The advantages and disadvantages of using these superconductors in the construction of high-frequency transmission lines and passive microwave and millimeter-wave antenna systems are discussed.<>
Keywords :
barium compounds; bismuth compounds; calcium compounds; high-temperature superconductors; microwave antennas; solid-state microwave devices; strip lines; strontium compounds; superconducting devices; thallium compounds; yttrium compounds; BiSrCaCuO; TlBaCaCuO; YBaCuO; high-frequency transmission lines; high-temperature superconductors; passive MM-wave antennas; passive microwave antennas; superconductivity; two-fluid model; Conducting materials; Conductivity; High temperature superconductors; Microwave measurements; Millimeter wave measurements; Optical materials; Physics; Superconducting materials; Superconducting microwave devices; Superconductivity;
Journal_Title :
Antennas and Propagation Magazine, IEEE
