Title :
Performance of TlCaBaCuO 30 GHz 64 element antenna array
Author :
Lewis, L.L. ; Koepf, G. ; Bhasin, K.B. ; Richard, M.A.
Author_Institution :
Ball Commun. Syst. Div., Broomfield, CO, USA
fDate :
3/1/1993 12:00:00 AM
Abstract :
A 64-element, 30-GHz microstrip antenna array with corporate feed network was designed and built on a 0.254-mm (10-mil) thick lanthanum aluminate substrate. One antenna pattern was fabricated from gold film, and a second pattern used TlCaBaCuO high-temperature superconductor. Both antennas used gold ground planes deposited on the reverse side of the substrate. Gain and radiation patterns were measured for both antennas at room temperature and at cyrogenic temperatures. Observations agree well with simple models for loss and microwave beam width, with a gain on boresight of 20.3 dB and beam width of 15 degrees for the superconducting antenna. The antenna loss is only 1.9 dB.<>
Keywords :
barium compounds; calcium compounds; high-temperature superconductors; microstrip antennas; microwave antenna arrays; superconducting microwave devices; thallium compounds; 1.9 dB; 20.3 dB; 30 GHz; 64 element antenna array; TlCaBaCuO; gain; high-temperature superconductor; loss; microwave beam width; radiation patterns; Antenna arrays; Antenna feeds; Gold; High temperature superconductors; Land surface temperature; Lanthanum; Microstrip antenna arrays; Microstrip antennas; Substrates; Superconducting films;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
