Chip-scale radio-frequency localization devices and associated systems and methods
摘要
說明書
Conventional techniques for target localization have substantial drawbacks and are often inadequate for many (or most) of these applications and/or perform unsatisfactorily in all but very limited circumstances or controlled environments. In particular, conventional localization techniques suffer from one or more drawbacks that significantly limit their use and/or applicability, including insufficient accuracy, low signal-to-noise (SNR) ratio, relatively lengthy refresh rates, susceptibility to background clutter, high cost, large size, etc. As a result, conventional localization techniques generally have narrow and limited application. The inventors have developed localization techniques with broad applicability to a range of fields that are suitable for a wide variety of applications.
For many applications, high localization accuracy (resolution) is an important capability and is a limiting factor for many conventional localization techniques. The inventors have developed localization techniques with the ability to resolve the location of a target in the millimeter and sub-millimeter range, referred to herein generally as micro-localization.
According to some embodiments, a micro-localization system comprises an interrogator configured to transmit a radio frequency (RF) signal (e.g., a microwave or millimeter wave RF signal) and a target configured to, in response to receiving the RF signal, transmit an RF signal to be received by the interrogator. The RF signal received from the target by the interrogator is used to determine the distance between the interrogator and the target.
