Chip-scale radio-frequency localization devices and associated systems and methods
摘要
說明書
In some embodiments, the timing circuitry 208 may be configured to provide a clock reference for one or more components of system 200. For example, the timing circuitry 208 may be configured to provide a clock reference to control circuitry 210 (which, as described below, may be a microprocessor). As another example, the timing circuitry 208 may be configured to provide a clock reference to interrogator 214 (e.g., to a phased lock loop part of interrogator 214). In some embodiments, the timing circuitry 208 may comprise a crystal oscillator (e.g., a temperature-controlled crystal oscillator).
In some embodiments, the control circuitry 210 may be configured to manage operation of the interrogators 214, 216, 218, and 220 in accordance with any of the schemes described herein. For example, the control circuitry 210 may be configured to manage the interrogators 214, 216, 218, and 220 to operate in accordance with a round-robin schedule, a staggered start schedule, or in a phase coherent manner. In embodiments where the interrogators are operated phase coherently with one another, the control circuitry 210 may be configured to generate a common reference signal (e.g., a clock, a fixed-frequency signal generated by a reference oscillator, or a direct digitally synthesized reference signal), which common reference signal may then be provided to the interrogator via one or more wires on the PCB 204. Additionally, the control circuitry 210 may be configured to control, using communications circuitry 212, the target device(s) 225 (e.g., by controlling which target devices are on or off at particular times).
