Patent ID: 11962323
Assignee: SIGMASENSE, LLC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A batteryless wireless sensor device comprising:
a first impedance matching network operably coupled to a first antenna and configured to receive a radio frequency (RF) signal that is transmitted from another device, wherein the RF signal includes a frequency within a frequency band designated for unlicensed operation by the US Federal Communications Commission (FCC);
a second impedance matching network operably coupled to a second antenna and also configured to receive the RF signal that is transmitted from the another device;
a first power rectifier including a first N-type metal-oxide-semiconductor field-effect transistor (MOSFET) (NMOS) and a first inductor operably coupled to the first impedance matching network and configured to harvest energy from the RF signal and generate a first DC signal based on the energy harvested from the RF signal;
a second power rectifier, including a second NMOS and a second inductor operably coupled to the second impedance matching network and configured to operate cooperatively with the first power rectifier to harvest the energy from the RF signal and operate cooperatively with the first power rectifier to generate the first DC signal based on the energy harvested from the RF signal;
a voltage regulator operably coupled to the first power rectifier and the second power rectifier and configured to process the first DC signal generated cooperatively by both the first power rectifier and the second power rectifier to generate a second DC signal based on the energy harvested from the RF signal;
a capacitor having a capacitor terminal operably coupled to the first inductor and the second inductor, and to the voltage regulator; and
a wireless sensor device operably coupled to the voltage regulator, the first impedance matching network, and the second impedance matching and configured to facilitate transmission of sensor data to the another device.