Radiofrequency generator arrangement with a plug-in connection integrated in a combiner

A radio-frequency (RF) generator arrangement comprising a combiner, wherein the combiner comprises:

• an RF plug socket, and
• an RF generator, wherein
• the RF generator comprises, at a microwave (MW) output thereof, a plug that matches the RF plug socket, wherein
• the RF plug socket is configured for transmitting an RF signal, and comprises:
• an opening with a first opening distance and a first opening cross section configured to receive the plug,
• an external contact configured for connection to an earth connection,
• an internal contact configured for connection to the RF signal, and
• an opening-narrowing device configured to reduce the opening so that the opening of the RF plug socket assumes a reduced-opening state when the plug is removed from the RF plug socket, wherein, in the reduced-opening state
• an opening distance of the opening is reduced in relation to the first opening distance, and/or
• an opening cross section of the opening is reduced in relation to the first opening cross section,
• wherein the opening-narrowing device comprises an electrically conductive barrier connected to the external contact and configured to prevent electromagnetic radiation of the RF signal emitted from the internal contact from exiting from the opening in the reduced-opening state.