The impacts of frequency and antenna selection for free-space radar transmitters

摘要

Free-space radar transmitters for level measurement typically use 6, 26, and 80 GHz frequencies. Recently, there has been a lot of hype concerning high-frequency radar transmitters, where some manufacturers claim: the higher the frequency the better the performance. This is not necessarily true. Instead, accuracy depends on frequency, beam angle, antenna configuration, and installation, but most importantly the dielectric constant of the product itself.