摘要:
A wireless power receiving system includes antenna arms and antenna grounds oriented in horizontal directions and an electrical connection oriented in vertical direction that has a low impedance at a pre-determined frequency of a transmitted wireless power wave. The electrical connection connects the antenna grounds perpendicular to the electrical connection. The wireless power receiving system can receive both the horizontal and vertical polarized E-fields of the transmitted wireless power wave emitting from a wireless power transmitter. In some embodiments, a battery with a vertical outer case forms the electrical connection, and both vertical and/or horizontal currents can be induced by the transmitted power wave polarized in any direction on the horizontal antenna grounds and/or the vertical outer case of the battery. In some embodiments, a metalized fixture or a metallic clamp forms the electrical connection.
摘要:
A circuit board for use in wireless energy harvesting applications is disclosed. The circuit board comprises a first plane and ground plane parallel to the first plane. The ground plane has a substantially rectangular shape with a length less than 1.38 λg and a width less than 0.92 λg. The first plane comprises an antenna, a feedline and a rectifier. The antenna is configured to receive an RF signal with a wavelength of λ 0 . The feedline is arranged to filter the received RF signal. The rectifier is arranged to generate a DC voltage from the received RF signal. The antenna, the feedline and the rectifier are arranged substantially co-linear along the first plane, and (formula I) where ε eff is the relative permittivity of a material between the first plane and the ground plane.
摘要:
There is provided a converter for converting a received RF signal into a DC signal for powering a load, the converter comprising: a rectifier arranged to generate, based on the RF signal, the DC signal and one or more harmonics of the RF signal, and to output the DC signal and the one or more harmonics together with a component of the RF signal; a first planar transmission line arranged to guide the received RF signal to the rectifier; and a second planar transmission line arranged to receive from the rectifier the DC signal, the component of the RF signal and the one or more harmonics from the rectifier, and to reflect the one or more harmonics back towards the rectifier. The first planar transmission line is further arranged to reflect back towards the rectifier RF signals from the rectifier that are based on the reflected signals. The converter further comprises a low-pass filter for supplying the DC signal to the load, the low-pass filter comprising an inductor and a third planar transmission line that. connects the second transmission line to the inductor, wherein the third planar transmission line and the inductor are arranged to transmit the DC signal and to substantially block the component of the RF signal and the harmonics of the RF signal.
摘要:
Systems and methods for power distribution allocation are provided. A system may establish a first wireless connection between the system and a first mobile device. The system may receive a first power request from the first mobile device, the first power request associated with a first minimum energy charge of the first mobile device, and may determine an available charging capacity of the charging system. The system may determine a first energy charge to provide wirelessly to the first mobile device, and may establish a second wireless connection with a second mobile device. The system may receive a second power request from the second mobile device, and may receive a first charge indicator from the first mobile device associated with a present charging status of the first mobile device. The system may determine a second energy charge to provide wirelessly to the second mobile device.
摘要:
The present disclosure may provide various electric receiver arrangements included in clothing pieces that require electric current to perform tasks, such as warming, cooling and displaying. Suitable wireless power transmission techniques, like pocket forming, may be used to provide the clothing pieces with wireless power. In some embodiments, receivers may include at least one antenna connected to at least one rectifier and one power converter. In other embodiments, receivers including a plurality of antennas, a plurality of rectifiers or a plurality of power converters may be provided. In addition, receivers may include communications components which may allow for communication to various electronic equipment including transmitters.
摘要:
Systems, methods, and apparatus for overvoltage protection in a wireless power receiver are disclosed. One aspect of the disclosure is a wireless power receiver apparatus. The apparatus includes an antenna circuit configured to wirelessly receive power, from a transmitter, at a level sufficient to power or charge a load, wherein the antenna circuit is electrically connected to an overvoltage protection circuit that is electrically connected between the antenna circuit and the load. The apparatus also includes a matching circuit electrically connected to the antenna circuit and a switching element electrically connected to the matching circuit. At least one of the matching circuit or the switching element is configured to control an amount of the received power flowing into the overvoltage protection circuit.
摘要:
Die Erfindung betrifft eine Sensoranordnung (3) zur Ermittlung von Schwingungen eines Messobjektes (1), welche stoffschlüssig, formschlüssig und/oder kraftschlüssig am Messobjekt (1) befestigbar oder befestigt ist, umfassend einen RFID-Transponder (5) und eine mit diesem gekoppelte Beschleunigungssensoreinheit (7), wobei Sensordaten der Beschleunigungssensoreinheit (7) über den RFID-Transponder (5) zu versenden sind. Des Weiteren betrifft die Erfindung eine Vorrichtung (2) zur Ermittlung von Schwingungen eines Messobjektes (1), ein Messobjekt (1) mit zumindest einer Sensoranordnung (3) sowie ein Verfahren zur Ermittlung von Schwingungen eines Messobjektes (1).
摘要:
A method and a system for wirelessly transferring powerby resonating a transmitter antenna with at least two conductors and a transmitter coil at a start-up frequency; tuning the transmitter antenna and the transmitter coil to their resonant frequency; generating an electric field within a volume defined by the at least two conductors; placing a receiver with a receiver antenna comprising two plates in the volume; accumulating a potential difference on the two plates; resonating the receiver antenna at the resonant frequency; and gathering power from the receiver antenna.