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Experimental measurements of radio signal attenuation and Faraday rotation in an inductively coupled plasma facility Luís, Diana Zaida Felgueiras Viladegut, Alan Camps Carmona, Adriano José Chazot, Olivier Universitat Politècnica de Catalunya. Doctorat en Teoria del Senyal i Comunicacions Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions Universitat Politècnica de Catalunya. CommSensLab-UPC - Centre Específic de Recerca en Comunicació i Detecció UPC Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal Plasma (Ionized gases) Faraday effect Signal processing Plasma flow Inductively coupled plasma wind tunnel Communication blackout Radio signal attenuation Faraday rotation Plasma (Gasos ionitzats) Efecte Faraday Tractament del senyal Spacecraft entering a planetary atmosphere are surrounded by a plasma layer containing high levels of ionization due to the high temperatures on the shock layer. The high electron number densities cause attenuation and rotation of the emitted signal, leading to communication blackout. This work presents experimental measurements of radio signal attenuation and Faraday rotation due to an ionized plasma flow. These measurements are conducted at the VKI Plasmatron using circularly polarized directive horn lens antennas with a waveguide orthomode transducer. Clear attenuations are observed when the signal is propagating through the plasma, and Faraday rotation measurements show a good agreement with the theoretical estimation. Diana Luıs research is funded by a doctoral fellowship (2021.04930.BD) granted by Fundaçao para a Ciencia e Tecnologia (FCT Portugal). The MEESST project is funded by the European Union’s Horizon 2020 research and innovation programme under grant agreement No 899298. Postprint (author's final draft) 2023 Conference report Luís, D. [et al.]. Experimental measurements of radio signal attenuation and Faraday rotation in an inductively coupled plasma facility. A: Symposium of VKI PhD Research. "14th Symposium of VKI PhD Research 2023: Tuesday 07 March 2023-Friday 10 March 2023". Sint-Genesius-Rode: Karman Institute for Fluid Dynamics, 2023. https://hdl.handle.net/2117/390394 eng Open Access 11 p. application/pdf Karman Institute for Fluid Dynamics