Abstract: A microwave treatment device comprises a treatment chamber, in which an object to be treated can be arranged, and a microwave emission device, by which microwave radiation can be radiated into the treatment chamber or emitted therein. The microwave emission device comprises at least one array antenna with a plurality of individual emitters and a microwave control device which can be used to specify an emission characteristic for each individual emitter of the at least one array antenna. A phase and/or amplitude of the microwave emission can be specified for each individual emitter by the microwave control device. A phase and/or an amplitude of the microwave emission can be specified for each individual emitter by the microwave control device. Furthermore, a frequency of the microwave emission can be specified within a frequency range for each individual emitter by the microwave device.