Chip-scale radio-frequency localization devices and associated systems and methods
摘要
說(shuō)明書
In some embodiments, RF signals received on the receive channel of the dual band antenna 1004 are provided to frequency multiplier 1006 (e.g., a 2× multiplier, a 3× multiplier, a 4× multiplier, an 8× multiplier, etc.) and, subsequent to being acted upon by the frequency multiplier 1006, are transmitted using the transmit channel of the dual band antenna 1004. For example, microwave RF signals having a first center frequency f0 may be received on the receive channel of dual band antenna 1004 and provided to frequency multiplier 1006, which may transform the received microwave RF signals to generate RF signals having a second center frequency that is a harmonic of the first center frequency (e.g., 2f0).
In some embodiments, the target device 1000 may be configured switch between the awake and sleep modes in response to a communication received from an external device. For example, the auxiliary receiver 1010 may be configured to receive, from an external device (e.g., a controller), a communication indicating that the target device is to be turned off and, in response to the communication, cause the bias control circuitry 1008 to reverse bias the frequency multiplier 1006 so that the target device 1000 stops transmitting RF signals in response to receiving RF signals. As another example, the auxiliary receiver 1010 may be configured to receive, from an external device (e.g., a controller), a communication indicating that the target device is to be turned on and, in response to the communication, cause the bias control circuitry 1008 to forward bias the frequency multiplier 1006 so that the target device 1000 begins to transmit RF signals in response to receiving RF signals.
