Chip-scale radio-frequency localization devices and associated systems and methods
摘要
說(shuō)明書
In some embodiments, each of antennas 704 and 706 may be fabricated on substrate 700. For example, substrate 700 may comprise one or more conductive layers and each of antennas 704 and 706 may be fabricated on the substrate 700 at least in part by patterning the conductive layer(s). In some embodiments, antenna 704 may be configured to transmit RF signals circularly polarized in a first rotational direction (e.g., clockwise) and the antenna 706 may be configured to receive RF signals circularly polarized RF in a second rotational direction different from the first rotational direction (e.g., counter-clockwise). In other embodiments, however, each of antennas 704 and 706 may be configured to transmit and receive RF signals circularly polarized in the same rotational direction.
Each of antennas 704 and 706 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, a folded dipole antenna, a MEMS antenna, or any other suitable type of antenna. In some embodiments, antennas 704 and 706 may be configured to transmit/receive at any suitable (e.g., millimeter wave and/or microwave) radio frequencies f0/kf0, where the transmit antenna 704 may be configured to transmit RF signals having a center frequency of f0 and the receive antenna 706 may be configured to receive RF signals having a center frequency of kf0, which is a harmonic of f0.
