Radar operated fill level measurement device

The invention relates to a high temperature resistant and compactly designable fill level measuring device (1), comprising: a housing (11); a transmitting/receiving unit (12) arranged in the housing (11), which generates a radar signal (SHF) and determines a fill level (L) on the basis of a corresponding received signal (RHF); an antenna (13) for transmitting a transmit radar signal (SHF) to the filling material (2) and for receiving a receive signal (RHF) reflected on a surface of the filling material; and a measuring device neck (14) which is arranged between the antenna (13) and the housing (11) and which contains a hollow conductor (141) which extends in the measuring device neck (14), via which hollow conductor (141) signals (SHF, RHF) are guided between the transmitting/receiving unit (12) and the antenna (13). In this case, the fill level measuring device (1) is distinguished by a thermal coupling element (142), which thermally couples the hollow conductor (141) to the measuring device neck (14). In th