Chip-scale radio-frequency localization devices and associated systems and methods
摘要
說明書
In some embodiments, the receive antenna 122 may be configured to receive RF signals having one type of polarization and the transmit antenna 126 may be configured to transmit RF signals having a different type of polarization. As discussed herein, such a configuration may be advantageous in that it serves to reduce the effects of multipath on the signals received by an interrogator device in communication with target device 900. For example, the receive antenna 122 may be configured to receive RF signals circularly polarized in a first rotational direction and the transmit antenna 126 may be configured to transmit RF signals circularly polarized in a second rotational direction different (e.g., opposite) from the first rotational direction. As a specific example, the receive antenna 122 may be configured to receive RF signals circularly polarized in a clockwise (or counter-clockwise) direction and the transmit antenna 126 may be configured to receive RF signals circularly polarized in the counter-clockwise (or clockwise) direction. Each of receive antenna 122 and transmit antenna 126 may be any suitable type of antenna, examples of which are provided herein.
