Metasurface antenna system for pedestrian to vehicle communications based on IEEE 802.11p: design and evaluation

Vehicular communication systems can be used for enhancing the safety level of road users by exchanging safety/warning messages. In this paper, we propose an antenna for a pedestrian-to-vehicular (P2V) device which provides safety service to road workers on the highway or road environment. A metasurface antenna system was fabricated and tested in the anechoic chamber. The device is worn close to the body of the road worker and at a distance of less than 200 mm. In this frame-work, the SAR has to be evaluated and compared to the threshold values recommended by standards. Experimental results showed that the proposed antenna, backed by a metasurface reflector, is an excellent candidate for P2V communications based on IEEE 802.11p systems with desirable radiation pattern, polarisation, and safety limits. Finally, a comparison between our antenna system performance in terms of full coverage direction and other systems is done.