Chip-scale radio-frequency localization devices and associated systems and methods
摘要
說明書
In such embodiments, RF signals generated by the waveform generator as having a center frequency of f0 (e.g., 7.5 GHz) are transformed, through operation of frequency multipliers 802, 804, and 806, to have a center frequency of 8f0 (e.g., 60 GHz). Although in the illustrated embodiment three frequency doublers are used to increase the frequencies in the RF signals generated by waveform generator 110 by a factor of 8, it should be appreciated that interrogator devices described herein are limited neither by the number of frequency multipliers in the signal path between waveform generator 110 and transmit antenna 114 nor by the multiplication factor induced by each of the frequency multipliers in the signal path. For example, to achieve an “8×” multiplication factor, interrogator 800 may be implemented with two frequency multipliers (instead of three frequency multipliers as shown in
