A magnetic resonance system obtaining magnetic resonance exposures of an
examination subject, has an examination tunnel, a whole-body antenna with
two connection terminals. The whole-body antenna cylindrically extends
around the examination tunnel along a longitudinal axis. The system has a
radio-frequency supply device in order to respectively supply the
whole-body antenna with radio-frequency signals for emission of a
radio-frequency field in the examination tunnel. The radio-frequency
supply device has a radio-frequency generator for generation of a
radio-frequency signal, a signal splitter that divides a radio-frequency
signal coming from the radio-frequency generator into two partial signals
that are phase-shifted by 90.degree. relative to one another. Two
radio-frequency feed lines are connected with the two connection
terminals of the whole-body antenna. Via these radio-frequency feed
lines, the two partial signals are fed into the whole-body antenna. The
whole-body antenna has an intrinsic transmission characteristic such that
a radio-frequency field is emitted that is elliptically polarized in a
defined manner in a plane lying perpendicular to the longitudinal axis
(at least in the unloaded state of the examination tunnel).