  We report the results of a magnetization losses study in experimental
multifilament, multiply connected coated superconductors exposed to
time-varying magnetic field. In these samples, the superconducting layer is
divided into parallel stripes segregated by non-superconducting grooves. In
order to facilitate the current sharing between the stripes and thus increase
the reliability of the striated conductors, a sparse network of superconducting
bridges is superimposed on the striated film. We find that the presence of the
bridges does not substantially increase the magnetization losses, both
hysteresis and coupling, as long as the number of bridges per length of the
sample is not large. These results indicate that it is possible to find a
reasonable compromise between the competing requirements of connectivity and
loss reduction in an ac-tolerant version of the high temperature coated
conductors specifically designed for ac power applications.
