An apparatus to control an antenna arrangement in a magnetic resonance apparatus has an amplifier with an input connected to a radio-frequency transmission signal to be amplified. The antenna arrangement has at least one antenna element for emission of the amplified transmission signal. The antenna element has an infeed point with two terminals, wherein the amplified transmission signal is connected at the terminals. The amplifier is connected on the output side with two terminals of the infeed point. The antenna element has at the infeed point, a mounting surface to accommodate the amplifier.