Abstract: A load regulation device, such as an LED driver, may be configured to control the intensity of a light source based on an analog control signal and a preconfigured dimming curve. The LED driver may sense a magnitude of the analog control signal and determine a new low-end and/or high-end control signal magnitude that falls outside of the input signal range of the dimming curve. The LED driver may rescale the preconfigured dimming curve according to new low-end and/or high-end control signal magnitudes and dim the light source based on the rescaled dimming curve. Multiple LED drivers controlled by the same analog control signal may communicate with each other regarding the magnitude of the analog control signal sensed by each LED driver, and match their target intensity levels despite sensing different analog control signal. A controller may be provided to coordinate the operation of the multiple LED drivers.

Abstract: Devices, systems, and methods for dynamic antenna tuning compensation. One example method includes controlling a transmitter to transmit a first plurality of signals, each of the first plurality of signals having a fundamental frequency different from the others. The method includes controlling a receiver to receive a second plurality of signals, wherein each of the second plurality of signals is received at a harmonic frequency of one of the first plurality of signals. The method includes determining at least one tuning parameter for an antenna tuner based on the second plurality of signals. The method includes controlling the antenna tuner to operate using the at least one tuning parameter.

Abstract: An LED light source simultaneously compatible with SCR dimming and intelligent dimming is provided. A central control unit collects a SCR phase-cut angle of a power supply unit, generates a feedback signal according to the SCR phase-cut angle to an intelligent dimming unit; the intelligent dimming unit receives a control instruction, generates a dimming signal according to the control instruction and the feedback signal to a constant-current unit, and generates an adjustment signal according to the control signal to the central control unit; the constant-current unit adjusts light emitting state according to the dimming signal; the central control unit generates a SCR current control signal according to the SCR phase-cut angle or the adjustment signal to a SCR current output unit; the SCR current output unit adjusts an output current according to the SCR current control signal. Therefore, compatible control of SCR dimming and intelligent dimming can be implemented.

Abstract: A monopole antenna includes an antenna portion including a monopole structure disposed perpendicular to a ground surface; a signal feeding portion configured to provide a signal to be fed to the antenna portion; a signal transmission portion disposed parallel to the ground surface and connected to the antenna portion and the signal feeding portion to transmit the signal to the antenna portion; and a base disposed between the ground surface and the signal transmission portion to support the signal transmission portion, wherein the antenna portion includes a shape in which a plurality of cylinders with different radii are connected.

Abstract: A LED circuit with a sequence function includes a load component, a capacitive component, a current load, and a voltage processor. The load component provides a resistance value. The capacitive component is connected to the load component in series at anode. The capacitive component provides a capacitance value, and generates an inner voltage at the node. The current load is connected in parallel to the load component and the capacitive component to provide a current path. The voltage processor receives the inner voltage and a threshold voltage, and compares the inner voltage with the threshold voltage to generate a comparison signal. The LED circuit counts time to acquire a time value from a starting time when the voltage processor starts to generate the comparison signal to a time when a level of the comparison signal changes, and uses the time value for sequencing.

Abstract: A method of driving a light source by a light driver includes determining a dimming value based on an input from a phase-cut dimmer at the input of the light driver, determining an offset for a dimmer transfer function of the light driver based on the dimming value and a minimum set point of the dimmer transfer function, applying the offset to the dimmer transfer function of the light driver to generate an adjusted dimmer transfer function, and determining a target light output of the light source based on the dimming value and the adjusted dimmer transfer function.

Abstract: According to one aspect of the present disclosure, a system is disclosed. The system may comprise a light assembly, an imager, and/or a controller. The light assembly may be configured to emit an array of illumination elements onto a scene. The imager may be configured to capture one or more images of the illumination elements projected onto the scene. The controller may be configured to selectively activate the light assembly between a first state and a second state. In the first and second sates, respectively, first and second groups of the illumination elements are selectively activated to emit first and second patterns of illumination elements.

Abstract: A printed circuit board includes an antenna and a plurality of component pads. The printed circuit board is configured to provide an antenna tuner for a mobile data communication network. Each component pad is configured, when populated with an electrical component, to couple the electrical component to the printed circuit board to form an antenna tuner circuit for the antenna. When a first set of the component pads are populated with electrical components, the antenna tuner circuit is configured as an aperture tuner for the antenna. When a second set of the component pads are populated with electrical components, the antenna tuner circuit is configured as an impedance tuner for the antenna.

Abstract: A multi-band antenna, in particular for a mobile communication base station, comprises a first array of first radiators for a first frequency band and a second array of second radiators for a second frequency band. The first array and the second array are interleaved such that in the region of overlap of the first array and the second array the rows (R1) of the first array and the rows (R2) of the second array are arranged alternatingly in a vertical direction (V) of the antenna. Further, a mobile communication base station is shown.

Abstract: This application provides example phased array apparatuses and example communication devices. One example apparatus includes: an antenna array including a antenna elements; a plurality of receiving channels, coupled to the antenna elements in the antenna array, where each of the plurality of receiving channels includes a transconductance stage circuit, the transconductance stage circuit includes a first transconductance unit array and a second transconductance unit array; a quadrature frequency-mixing circuit, where a non-inverting input end and a quadrature input end of the quadrature frequency-mixing circuit are respectively coupled to an output end of the first transconductance unit array in the plurality of receiving channels and an output end of the second transconductance unit array in the plurality of receiving channels; and a signal processing circuit, where an input end of the signal processing circuit is coupled to an output end of the quadrature frequency-mixing circuit.

Abstract: An LED lighting device is disclosed. The example LED lighting device includes an LED circuit having at least two LEDs connected in series that emit a color temperature of white light. The example LED lighting device also includes a switch configured to be manually switched by a user to change the color temperature of white light that is emitted from the LED circuit. Switching the switch changes the color temperature of light emitted from the LED circuit by dimming or increasing a brightness of the at least two LEDs.

Abstract: The invention relates to a method for controlling a pixelated light source for a motor vehicle. The method makes it possible to prevent thermal runaway and premature ageing of the elementary pixels of the source independently of the projected light levels. By dynamically adapting the electric current intensities at the elementary light sources, the control method provides protection for the semiconductor junctions of the pixels of the pixelated light source in order to increase their lifespan and avoid visible defects in a beam projected onto the road due to thermal runaway or premature ageing of the semiconductor junctions.

Abstract: Disclosed is a downlight power box control circuit capable of realizing emergency lighting and general lighting, comprising a battery, a logic input module and a light-emitting element which are electrically connected to a main control module. The logic input module determines whether a mains voltage is available. In a case where the mains supply supplies power normally, the main control module controls the light-emitting elements to operate according to 100% of a load power. In case of an outage of the mains supply, the battery is used to supply power to a light tube, and the control module controls the light-emitting element to operate according to 30%-50% of the load power to realize emergency lighting.

Abstract: Provided are a variable lamp system for moving vehicles capable of controlling lighting brightness and irradiation angle by using speed information of the moving vehicle and surrounding road information of the moving vehicle, and a moving vehicle including the same.

Abstract: A method is disclosed for adding and/or extending at least one light function of at least one light source in at least one vehicle. The method comprises the following steps performed outside the at least one vehicle, in particular in a computer system that is physically remote from the at least one vehicle: receiving at least one requested light function for the implementation by the at least one light source in the at least one vehicle, checking whether the at least one requested light function satisfies at least one condition of the at least one light source, and adding and/or extending the at least one requested light function for the implementation of the at least one requested light function by the at least one light source, provided that the at least one requested light function satisfies the at least one condition.

Abstract: According to one embodiment, an intelligent reflecting surface includes a plurality of individual areas, each of the individual areas including a first area and one or more second areas, a connection area, a first substrate including a plurality of patch electrodes, a second substrate including a common electrode, the common electrode being located in the first area of each of the individual areas and the connection area and being opposed to the patch electrodes, and a liquid crystal layer held between the first substrate and the second substrate and opposed to the patch electrodes.

Abstract: An illuminated body is provided for a lamp of a vehicle, and includes at least one carrier body, at least one light source arranged on the carrier body, at least one sensor unit for detecting a temperature, and at least one control unit for setting an electric current of the light source for emitting the light of the light source as a function of the temperature detected by the sensor unit. The control unit is at least designed to set for a first temperature range (B1) the electric current of the light source as a function of the temperature detected by the sensor unit on the basis of a first control section (A1) of a control curve (C1) and for a second temperature range (B2) on the basis of a second control section (A2) of the control curve (C1).

Abstract: A method for presence monitoring and environmental monitoring in a hospital room is provided. The method comprises conducting a detection of a person and/or a device in the hospital room to provide presence monitoring by detecting a marker of the person and/or the device; conducting a measurement of at least one parameter in the hospital room, in order to enable environmental monitoring; and conducting a control of a device provided inside and/or outside the hospital room, which is a lighting array, whereby the control is conducted depending on the performed detection of the person and/or the device and/or depending on the performed measurement of the parameter.

Abstract: Embodiments of the present application relate to the technical field of communication, and disclose an antenna element and an antenna array, the antenna element including a dielectric substrate (10), a radiation unit (20) and a feed unit (30); a first support column (11) is provided on the dielectric substrate (10); the radiation unit (20) and the feed unit (30) are an integrally formed structure, at least one of the radiation unit (20) and the feed unit (30) being provided with a first through hole (21), the first support column (11) passing through the first through hole (21), and the first support column (11) and an inner wall of the first through hole (21) being fixedly connected by means of hot melting.

Abstract: The present invention provides a process for producing a plasma-activated liquid. A first plasma source is supplied with a first working gas and the first plasma source is used to generate a plasma in the first working gas so that the first plasma source provides a first reactive gas stream. A further plasma source is supplied with a further working gas and the further plasma source is used to generate a plasma in the further working gas so that the further plasma source provides a further reactive gas stream. A plasma-activated liquid is produced using the first and the further reactive gas stream. The composition of the first working gas differs from the composition of the further working gas. An appropriately configured apparatus and a use of such an apparatus for producing a plasma-activated liquid are likewise described.