Antenna applications of superconductors

The applicability of superconductors to antennas is examined. Potential implementations that are examined are superdirective arrays; electrically small antennas; tuning and matching of these two; high-gain millimeter-wavelength arrays; and kinetic inductance slow wave structures for array phasers and travelling wave array feeds. It is thought that superdirective arrays and small antennas will not benefit directly, but their tuning/matching networks will undergo major improvements. Miniaturization of antennas will not be aided, but much higher gain millimeter-wave arrays will be realizable. Kinetic inductance slow-wave lines appear advantageous for improved array phasers and time delay, as well as for traveling-wave array feeds. >

[1]  H.A. Wheeler,et al.  Fundamental Limitations of Small Antennas , 1947, Proceedings of the IRE.

[2]  J. B. Beyer,et al.  A broad-band microwave superconducting thin-film transformer , 1988 .

[3]  R.C. Hansen,et al.  Superconducting antennas , 1990, International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's.

[4]  Salam Khamas,et al.  Significance of matching networks in enhanced performance of small antennas when supercooled , 1990 .

[5]  T.S.M. Maclean,et al.  High-Tc superconducting short dipole antenna , 1988 .

[6]  S. W. McKnight,et al.  Attenuation and dispersion for high-T/sub c/ superconducting microstrip lines , 1990 .

[7]  Y. Lo,et al.  Optimization of directivity and signal-to-noise ratio of an arbitrary antenna array , 1966 .

[8]  T. Itoh,et al.  Phenomenological loss equivalence method for planar quasi-TEM transmission lines with a thin normal conductor or superconductor , 1989 .

[9]  C. Krowne,et al.  On the application of complex resistive boundary conditions to model transmission lines consisting of very thin superconductors , 1989 .

[10]  M. Abramowitz,et al.  Mathematical functions and their approximations , 1975 .

[11]  D. J. White,et al.  Theoretical increase in radiation efficiency of a small dipole antenna made with a high temperature superconductor , 1990 .

[12]  C. Kircher,et al.  Penetration depth measurements on type II superconducting films , 1977 .

[13]  W. L. Carter,et al.  Measurements and Modeling of Kinetic Inductance Microstrip Delay Lines , 1987, 1987 IEEE MTT-S International Microwave Symposium Digest.

[14]  J. Swihart,et al.  Field Solution for a Thin‐Film Superconducting Strip Transmission Line , 1961 .

[15]  H. Wheeler,et al.  Small antennas , 1975 .

[16]  Gerard Mourou,et al.  Propagation model for ultrafast signals on superconducting dispersive striplines , 1988 .

[17]  R. G. Medhurst,et al.  A new approach to the design of super-directive aerial arrays , 1953 .

[18]  R. Hansen,et al.  Fundamental limitations in antennas , 1981, Proceedings of the IEEE.

[19]  R. Hansen,et al.  Some new calculations on antenna superdirectivity , 1981, Proceedings of the IEEE.