Study of propragation model at 60 GHz

There has been a lot of interest lately in using millimeter (mm) -waves for high speed indoor wireless communications. Signals generated by mm-wave systems encounter various obstacles and get attenuated due to reflection, absorption, and diffraction, thereby resulting in shadowing and fluctuations. The 60 GHz band is of much interest since this is the band in which a massive amount of spectral space (5 GHz) has been allocated worldwide for dense wireless local communications. The article gives an overview of 60 GHz channel characteristics. A propagation model for indoor wireless communication at 60 GHz is developed using electromagnetic theory. At large ranges and in dense multipath environments, the signal strength is expected to drop off more rapidly due to high penetration loss. An exponential increase in loss with distance in an area populated densely with obstacles has been observed at the lower frequency bands.