  We present results of numerical simulations of a metamaterial element
(meta-atom) for planar negative media based on cuprate Josephson junctions. The
proposed circuit consists of two coupled resonators: "magnetic dipole" and
"electric dipole". The first one is a superconducting spiral resonator with
multijunction superconducting structure - SQIF (SQIF - superconducting quantum
interference filter), and the second one is a comb-shape resonator made from
normal metal film. We show, that in comparison with passive metal resonators,
the superconducting resonator with Josephson junctions (magnetic dipole) can be
tuned by external magnetic field due to magnetic dependence of Josephson
inductance. The simulated characteristics of one-dimensional planar negative
media are discussed.

Superconductivity