The design of wearable passive UHF tags has up to now received much less attention. In a previous paper [10], the authors considered a family of slot antennas over a suspended patch, partly decoupled from the body by a silicone slab. The studywas mostly oriented to define tuning mechanisms for the required
conjugate impedance matching to a great variety of microchip impedances and to understand the dependence of the antennas’s bandwidth on the body placement.