Link budget estimations for millimeter-wave links via anomalous reflectors

High-frequency (millimeter-wave) wireless communications require the use of directive, high-gain antennas, as otherwise the achievable length of the communication link quickly decreases with increasing frequency. In order to provide necessary space coverage, anomalously reflecting and reconfigurable intelligent surfaces can be possibly used. In this presentation, we will discuss our recent results on analytical estimations of the link budget in the presence of such reflectors. Using the concept of macroscopic reflection coefficients, it is possible to come to very simple analytical expressions for the far field and set it into the form of a generalized Friis formula. The analytical results are validated by numerical simulations of a particular realization of an anomalous reflector for the millimeter-wave frequency band.