Fig. 12From: RIS-enabled smart wireless environments: deployment scenarios, network architecture, bandwidth and area of influencePIN-diode-based T-RIS unit cell characterisation: a structure, b states 000 and 180 and the c magnitude and d phase of their \(\textrm{S}11\) and \(\textrm{S}21\) parameter, and e contrast of the \(\textrm{S}\)-parameters for these states as a function of the frequency in GHzBack to article page