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Chip-scale radio-frequency localization devices and associated systems and methods

專(zhuān)利號(hào)
US11177554B2
公開(kāi)日期
2021-11-16
申請(qǐng)人
Humatics Corporation（US MA Waltham）
發(fā)明人
Gregory L. Charvat; David A. Mindell
IPC分類(lèi)
H01Q1/22; G01S13/87; H01Q1/52; H01Q3/36; H01Q9/04; H01Q9/27; G01S5/14; H01Q1/38; H01Q9/26; H04B5/00; H04W4/02; H04W56/00; H01Q1/24; H01Q5/10; G01S5/02; H04W64/00; G01S11/02
技術(shù)領(lǐng)域
rf,antenna,frequency,target,signals,transmit,receive,signal,may,circuitry
地域： MA MA Waltham

摘要

A device comprising: a substrate; a semiconductor die mounted on the substrate; a transmit antenna fabricated on the substrate and configured to transmit radio-frequency (RF) signals at least at a first center frequency; a receive antenna fabricated on the substrate and configured to receive RF signals at least at a second center frequency different than the first center frequency; and circuitry integrated with the semiconductor die and configured to provide RF signals to the transmit antenna and to receive RF signals from the receive antenna.

說(shuō)明書(shū)

Multi-spectral target device 1185 comprises receive antenna 1186 configured to receive RF signals at a first center frequency f1 (e.g., chirps generated by waveform generator 1171 transmitted by transmit antenna 1173) and receive antenna 1188 configured to receive RF signals having a second center frequency f2 (e.g., a continuous wave signals generated by oscillator 1174 and transmitted by transmit antenna 1175). Target device 1185 further comprises amplifiers 1187, amplifier 1189, frequency multiplier 1190 and frequency mixer 1191. The frequency mixer 1191 is configured to mix RF signals received by antenna 1186 and amplified by amplifier 1187 with RF signals received by antenna 1188, amplified by amplifier 1189 and frequency multiplied by frequency multiplier 1190 to obtain frequency shifted RF signals having a third center frequency f3 (which may be given by f3=f1+kf2, where k is the multiplicative factor induced by frequency multiplier 1190). Target device 1185 further comprises multiple transmit antennas 1196-1, 1196-2, and 1196-n, configured to transmit RF signals at respective harmonics of the third center frequency (e.g., 2f3, 3f3, etc.). The frequency-shifted RF signals output by frequency mixer 1191 and having the third center frequency are filtered by filter 1192, amplified by amplifier 1193, and provided to signal transformation circuitry configured to generate RF signals having as center frequencies different harmonics of the third center frequency. The signal transformation circuitry includes a respective signal transformation chain for each harmonic of the third center frequency at which the target device 1185 is configured to transmit RF signals.

權(quán)利要求

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