Title :
High-gain series fed printed dipole arrays made of high-Tc superconductors
Author :
Ivrissimtzis, L.P. ; Lancaster, M.J. ; Maclean, T.S.M. ; Alford, N.McN.
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
fDate :
10/1/1994 12:00:00 AM
Abstract :
High-gain arrays are designed from closely spaced printed dipoles, alternately crossed by an integrated series feed. Both the array elements and the feeding and matching network are made of thick film YBa 2Cu3O7-x material for increased efficiency. The optimization of directive gain in terms of spacing and dipole length, under constraints in array size, is performed by combining the space domain method of moments (MM) with transmission line theory. A practical design is experimentally demonstrated, and its performance is compared to simulated data. The superconducting array presents gain higher than that of similar cryogenically cooled Cu and Ag arrays tested. Supergain potential is discussed
Keywords :
antenna feeders; dipole antennas; high-temperature superconductors; microstrip antennas; microwave antenna arrays; numerical analysis; optimisation; superconducting devices; thick film devices; transmission line theory; YBa2Cu3O7; array elements; closely spaced printed dipoles; dipole length; directive gain; feeding network; high-Tc superconductors; high-gain series fed printed dipole arrays; integrated series feed; matching network; optimization; performance; space domain method of moments; spacing; superconducting array; supergain potential; thick film YBa2Cu3O7-x material; transmission line theory; Antenna arrays; Constraint optimization; Feeds; High temperature superconductors; Performance gain; Phased arrays; Substrates; Superconducting materials; Superconductivity; Thick films;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
