Chip-scale radio-frequency localization devices and associated systems and methods
摘要
說明書
In some embodiments, the master interrogator module 206 may control the interrogators 214, 216, 218 and 220 to operate according to a schedule specifying an order for operating the interrogators in a one-at-a-time manner. For example, the master interrogator module 206 may control the interrogators to operate in accordance with a round-robin schedule, whereby the master interrogator controls each of the interrogators onboard PCB 204 to transmit an RF signal to a target device (or multiple target devices) and receive responsive RF signals waveform in a one-at-a-time manner. As one example, master interrogator module 206 may: (1) wirelessly communicate with a specific target device 225 to turn it on; (2) trigger interrogator 214 to transmit an RF signal (e.g., a linear frequency modulated chirp) to the specific target device and receive a responsive RF signal from the specific target device; (3) after interrogator 214 completes transmitting, trigger interrogator 216 to transmit an RF signal to the specific target device and receive a responsive RF signal from the specific target device; (4) after interrogator 216 completes transmitting, trigger interrogator 218 to transmit an RF signal to the specific target device and receive a responsive RF signal from the specific target device; and (5) after interrogator 218 completes transmitting, trigger interrogator 220 to transmit an RF signal to the target device and receive a responsive RF signal from the target device. When operating according to a round-robin schedule, if each of the interrogators transmits a 1 ms chirp, then it takes 4 ms to collect data by using all four interrogators.
