Propagation Measurements and Models for 14 GHz FR3 and Starlink Coexistence

Under the evolution of 6G, the spectrum crunch for new frequencies has introduced the discussion of the 7-24 GHz spectrum, referred to as FR3, for mobile network usage. This spectrum is traditionally known as the dedicated operating frequency for satellite communication, particularly in the Ku-Band (12-18 GHz). To date, little is known about the coexistence of these two entities within the FR3 spectrum and the propagation environment in this frequency range. This paper presents measurements in the 14-14.5GHz spectrum for an outdoor channel scenario, conducted using both a reference communication chain with a low-gain isotropic antenna and a commercially available, highly directive, electronically steerable Starlink user terminal. Evaluations were performed for the received power from the reference antenna, alongside parallel measurements of spurious emissions from the Starlink terminal. In conclusion, this work provides measurements and path loss models to support future investigations of the 14 GHz spectrum for FR3 usage.