A mm-wave depolarizing chipless pressure sensor

A novel mm-wave chipless pressure sensors configuration is designed and tested. The sensor relies on a mm-wave chipless RFID tag designed within 30 GHz frequency band. The designed tag consists of a periodic surface, including three dipole resonators, printed on a thin grounded dielectric substrate. The structure provides multiple resonant peaks in the cross polar response. The resonator is then loaded with a superstate which determines a frequency shift of the resonant peaks proportional to the applied pressure.