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

專利號
US11177554B2
公開日期
2021-11-16
申請人
Humatics Corporation（US MA Waltham）
發(fā)明人
Gregory L. Charvat; David A. Mindell
IPC分類
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.

說明書

FIG. 16 is a flowchart of an illustrative process 1600 for making distance measurements using an interrogator device configured to transmit, to at least one target device, RF signals circularly polarized in one rotational direction and receive, from the at least one target device, RF signals circularly polarized in another rotational direction, in accordance with some embodiments of the technology described herein. The process 1600 may be performed by any suitable type of interrogator device described herein that has transmit and receive antennas configured to transmit and receive RF signals having using different polarizations and any suitable type of target device described herein that has transmit and receive antennas configured to receive and transmit RF signals having different polarizations.

Process 1600 begins at act 1602, where a transmit antenna on an interrogator device, transmits, to a target device, a first RF signal circularly polarized in a first rotational direction. In some embodiments, the first RF signal may be an RHCP RF signal (having clockwise circular polarization). In other embodiments, however, the first RF signal may be a LHCP RF signal (having counter-clockwise circular polarization).

The interrogator's transmit antenna may be any suitable type of antenna configured to transmit circularly polarized signals. The transmit antenna may be directional or isotropic. In some embodiments, the transmit antenna may be a circularly polarized antenna fabricated on a substrate. For example, the circularly polarized antenna may be a patch antenna, a planar spiral antenna, an antenna comprising a first linearly polarized antenna and a second linearly polarized antenna disposed orthogonally to the first linearly polarized antenna.

權(quán)利要求

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