Radiation pattern of the antenna of a 24 GHz and an 80 GHz FMCW Radar Level Transmitter

Radiation pattern of the antenna: The radiation pattern of a radar system results from the combination of the frequency and the antenna diameter. In general, the following applies: With the same antenna diameter, the beam angle decreases proportionally when increasing the frequency. At the same frequency, the beam angle decreases proportionally when increasing the antenna diameter. The illuminated circles in the video illustrate the areas detected by the respective radar system on the product surface. It should be noted that radar beams spread out conically from the antenna. For the selected system configurations 24GHz with an 80mm horn antenna and 80GHz with a 40mm lens antenna, these areas are approximately identical.