Patent ID: 7726184

Claim:
A wireless and batteryless pressure sensor apparatus, comprising: a SAW sensor having at least one SAW die with at least one SAW resonator for measuring applied pressure and/or temperature due to change in a resonant frequency of the at least one SAW resonator; an antenna connected to said SAW sensor such that said antenna is configured to communicate wirelessly with a remote interrogator unit, said antenna configured to receive an interrogating radio frequency (RF) signal, and to transmit an RF response from the SAW sensor back to the remote interrogator unit, the RF response including at least a measure related to the resonant frequency of the at least one SAW resonator representing at least one of pressure and temperature; and a sensor package including a base for mounting and containing said SAW sensor and said antenna; wherein said SAW sensor is designed in a stainless steel button package having a sensor diaphragm, and along with said sensor package, comprises a shape that is adaptable for measuring at least one of pressure and temperature.