  We realize variable control of the group delay in an electromagnetically
induced transparency-like metamaterial. Its unit cell is designed to have a
bright mode and a dark mode. The coupling strength between these two modes is
determined by the electromagnetic field gradient. In this metamaterial with
field-gradient-induced transparency, the group delay at the transparency
frequency can be varied by varying the incident angle of the electromagnetic
plane waves. By tilting a single layer of the metamaterial, the group delay of
a microwave pulse can be varied between 0.50 and 1.85 ns.
