Fill-level measuring device

A radar based, fill level measuring device for determining a fill level profile (L(α,β)) of a fill substance, comprising:

• an antenna arrangement, including:
• a defined number of transmitting antennas, wherein, in each case, a radar signal is transmittable to the fill substance;
• and
• a defined number of receiving antennas, wherein after reflection of the radar signal on the fill substance surface, in each case, a received signal is receivable;
• a transmitting/receiving unit, which is designed to:
• produce radar signals, and
• based on received signals, create the fill level profile (L(α,β));
• and
• a measuring device neck, which is arranged along a central device neck axis between the antenna arrangement and the transmitting/receiving unit and which includes:
• a number of transmitting waveguides corresponding to the number of transmitting antennas and extending within the measuring device neck in parallel with the device neck axis and connecting the transmitting antennas, in each case, with the transmitting/receiving unit;
• and
• a number of receiving waveguides corresponding to the number of receiving antennas and extending within the measuring device neck in parallel with the device neck axis and connecting the receiving antennas, in each case, with the transmitting/receiving unit;
• wherein:
• the transmitting waveguides are aligned along a first contour, which radially symmetrically surrounds the device neck axis;
• and
• the receiving waveguides are aligned either along the first contour or along a second contour, which surrounds the device neck axis likewise radially symmetrically.