Scaled modeling and measurement for studying radio wave propagation in tunnels

Jacob Gerasimov, Nezah Balal, Egor Liokumovitch, Yair Richter, Michael Gerasimov, Eran Bamani, Gad A. Pinhasi, Yosef Pinhasi

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The subject of radio wave propagation in tunnels has gathered attention in recent years, mainly regarding the fading phenomena caused by internal reflections. Several methods have been suggested to describe the propagation inside a tunnel. This work is based on the ray tracing approach, which is useful for structures where the dimensions are orders of magnitude larger than the transmission wavelength. Using image theory, we utilized a multi-ray model to reveal non-dimensional parameters, enabling measurements in down-scaled experiments. We present the results of field experiments in a small concrete pedestrian tunnel with smooth walls for radio frequencies (RF) of 1, 2.4, and 10 GHz, as well as in a down-scaled model, for which millimeter waves (MMWs) were used, to demonstrate the roles of the frequency, polarization, tunnel dimensions, and dielectric properties on the wave propagation. The ray tracing method correlated well with the experimental results measured in the tunnel as well as in a scale model.

Original languageEnglish
Article number53
Pages (from-to)1-13
Number of pages13
JournalElectronics (Switzerland)
Issue number1
StatePublished - Jan 2021


  • MMW
  • RF
  • Ray tracing
  • Scale model
  • Tunnel


Dive into the research topics of 'Scaled modeling and measurement for studying radio wave propagation in tunnels'. Together they form a unique fingerprint.

Cite this