61 results about "Rf radiation" patented technology

An RF infrastructure sentry system includes one or more sensors configured to detect that an object has entered an area of concern proximate to an RF radiation source and an RF mitigation system operatively connected to the one or more sensors, the RF mitigation system including a communication interface operatively connected via a network to an RF signal source, the RF signal source including an application programming interface (API) for controlling a power of, or interrupting, an RF signal produced by the RF signal source, and a processor operatively connected to the communication interface and configured, at least in response to detection by the one or more sensors that the object has entered the area of concern, to send a first command via the communication interface to the API, the first command configured to temporarily reduce or interrupt the RF signal produced by the RF signal source.

A wireless power transmission device is provided. The wireless power transmission device includes a plurality of power transmission antennas, a plurality of sensing antennas, a power processing circuit memory storing one or more computer programs, and one or more processors communicatively coupled to the plurality of power transmission antennas, the plurality of sensing antennas, the power processing circuit, and the memory, wherein the one or more computer programs include computer-executable instructions that, when executed by the one or more processors individually or collectively, cause the wireless power transmission device to control the power processing circuit to transmit power to a first electronic device disposed in a first region among a plurality of regions through the plurality of power transmission antennas, transmit at least one first signal through the power processing unit using a first sensing antenna among the plurality of sensing antennas, receive at least one second signal through the power processing circuit, using a second sensing antenna among the plurality of sensing antennas, identify, whether an object exists in the first region among the plurality of regions based on the at least one first signal and the at least one second signal, identify a first stay duration during which the object stays in the first region, based on identifying that the object exists in the first region, identify a first cumulative RF radiation value of the wireless power transmission device for the first region during the first stay duration, and based on the first cumulative RF radiation value being equal to or greater than a first threshold for the first region, control the power processing circuit to adjust transmission output of the power to the first electronic device in the first region or to direct the power toward the first electronic device in the first region to a second electronic device in a second region different from the first region.

A communications node includes an apparel item in the form of a backpack attachment that includes a panel, first and second arms extending therefrom. An antenna element and A / V hub may be affixed to an arm. The attachment may include a communications device and battery. A control circuit may be communicatively coupled to the antenna element, the A / V hub, the communications device, and the battery. The A / V hub may demountably and communicatively couple to an audio / video source. The control circuit may establish a mesh network with computing devices. The antenna element may include a graphene polymer conductive composition. The graphene may form a three-dimensional percolated network within the polymer matrix. The apparel item may include a multilayered material that reflect RF radiation generated by the antenna element away from the apparel item. The layer may include a conductive material. The layer may include a foam.

Aspects of the present disclosure provide improved techniques for detecting the presence of RF anomalies and providing for enhanced user control of RF anomaly detection and related actions. Some aspects relate to detecting an RF anomaly by determining, based on a multidimensional encoding of characteristics of an RF signal, that the RF signal is anomalous compared to a baseline of multidimensional encodings of characteristics of RF radiation received in the operating environment. Some aspects relate to controlling RF anomaly detection by initiating an action in response to selection of an option displayed to a user in a graphical user interface in along with an indication of an RF signal determined to be anomalous compared to a baseline. Some aspects relate to identifying a subset of RF data and determining a presence of an RF anomaly corresponding to the subset by comparing a representation of RF radiation to a baseline.

An RF infrastructure sentry system includes one or more sensors configured to detect that an object has entered an area of concern proximate to an RF radiation source and an RF mitigation system operatively connected to the one or more sensors, the RF mitigation system including a communication interface operatively connected via a network to an RF signal source, the RF signal source including an application programming interface (API) for controlling a power of, or interrupting, an RF signal produced by the RF signal source, and a processor operatively connected to the communication interface and configured, at least in response to detection by the one or more sensors that the object has entered the area of concern, to send a first command via the communication interface to the API, the first command configured to temporarily reduce or interrupt the RF signal produced by the RF signal source.

Techniques and apparatus for radio frequency (RF) exposure management for multiple radios are described. An example method of wireless communication by a wireless device generally includes determining a first exposure associated with a first radio for a first transmission in a first time interval; determining a first allowable transmit power associated with a second radio for a second time interval based at least in part on the first exposure associated with the first radio; and transmitting a first signal at a first transmit power in the second time interval using the second radio based on the first allowable transmit power.

An antenna comprises first and second radiating elements that are configured to operate in respective first and second operating frequency bands, and a parasitic element that includes a overlapping first and second conductive paths. The first conductive path includes a plurality of first segments and the second conductive path includes a plurality of second segments. A subset of the first segments overlap respective ones of the second segments to form a plurality of pairs of overlapping first and second segments and at least some of these pairs are configured so that an instantaneous direction of a first current formed on the first segment in response RF radiation emitted by the second radiating element will be opposite an instantaneous direction of a second current formed on the second segment in response to the RF radiation emitted by the second radiating element.

The present application discloses a radio frequency drying system and method, a device, and a storage medium. The system comprises a power supply, a radio frequency source, and a radio frequency radiator. The power supply is configured to supply power to the radio frequency source, and the radio frequency source is configured to output to the radio frequency radiator an electromagnetic wave signal in a predetermined radio frequency band. The radio frequency radiator comprises at least two feeding assemblies. Each feeding assembly comprises a feeding port and a corresponding antenna. An input end of the feeding port is connected to the radio frequency source, and an output end of the feeding port is connected to the corresponding antenna. The antennas of the feeding assemblies are configured to generate a uniformly heated electromagnetic field. There is a gap between the antennas of the feeding assemblies, and the gap is configured for placing an object to be dried. The system has a simple overall structure, is easy to miniaturize, and is suitable for being configured to perform radio frequency drying operations on small consumer products, which is helpful for improving the drying effect, achieving uniform and reliable drying, and further improving the use experience of the consumer products. The present application can be widely applied in the technical field of electronic devices.

A method and apparatus for electrical addressing for an antenna (e.g., a metamaterial radio-frequency (RF) antenna are described. In one embodiment antenna comprising: a plurality of radio-frequency (RF) radiating antenna elements located in a plurality of rings; and matrix drive circuitry coupled to the plurality of RF radiating antenna elements to drive the antenna elements, wherein the matrix drive circuitry to uniquely address each of the antenna elements using a matrix of a plurality of rows and a plurality of columns with a non-grid-based addressing structure.

The invention provides a radio frequency heating system and aerosol generating equipment. The system comprises a radio frequency source, a power divider, a phase shifter and a radio frequency radiator which are sequentially coupled, a high-power electromagnetic wave signal is generated through the radio frequency source, and then the high-power electromagnetic wave signal is sequentially processed by the power divider and the phase shifter to obtain multiple paths of radio frequency band electromagnetic wave signals with different phases; therefore, the distribution uniformity of an electromagnetic field generated by the radio frequency radiator based on the radio frequency section electromagnetic wave signal is improved, a heated medium in the radio frequency radiator can be fully heated to improve the continuity of aerosol, meanwhile, the power at the input position of the electromagnetic wave signal can be prevented from being too large, and the service life and the safety of equipment are effectively improved.

A modular communications system having dynamically positionable non-metallic antenna elements is disclosed. The system includes an apparel item with a surface and a foam layer positioned therein. Landing pads are each uniquely positioned on the surface. Antenna elements are coupled to the landing pads; include a non-metallic conductive composition and a unique operational frequency. A hub is positioned on the surface and coupled to each landing pad. Communications devices are demountably affixed to the surface; coupled to the hub; and each include a unique operational frequency. The hub couples each communications devices to a unique landing pad. The foam layer is lined with a conductive material that reflects RF radiation that emanates from the plurality of non-metallic antenna elements. The system achieves an omnidirectional RF radiation pattern when utilizing the plurality of antenna elements and an altered RF radiation pattern when utilizing a subset of the plurality of antenna elements.

In certain aspects, a method for wireless communication includes transmitting a first transmission with a first transmitter operable according to a first radio technology, and transmitting a second transmission with a second transmitter after completion of the first transmission, the second transmitter operable according to a second radio technology. The method may also include delaying transmission of the second transmission by a predetermined wait time after completion of the first transmission if the first radio technology is a radio frequency (RF) exposure time-averaged technology and the second radio technology is a non-time-averaged RF exposure technology. The method may also include transmitting the second transmission with a limited peak power for a predetermined time period for at least a portion of the second transmission if the first radio technology is a non-time-averaged RF exposure technology and the second radio technology is a time-averaged RF exposure technology.

A method for mitigating RF radiation exposure in an area of concern proximate to an RF radiation source includes operatively connecting one or more sensors to a processor, operatively connecting the processor to a relay disposed on an electrical path between an electrical input and an electrical output, the relay configured to selectively connect or disconnect the electrical input and the electrical output through the electrical path under control of the processor, operatively connecting the electrical input to a power supply for the RF radiation source, operatively connecting the electrical output to the RF radiation source, detecting, via the one or more sensors, that an object has entered the area of concern, and opening the relay, via the processor, to temporarily interrupt power to the RF radiation source at least in response to detection by the one or more sensors that the object has entered the area of concern.

Edge computing units that are outfitted with signal receivers and provided at local sites or edge locations are configured to capture RF signals and process the RF signals using transformer models. A spectrum encoder of a transformer model performs attention on frequency-encoded features extracted from spectrograms of the RF signals and features extracted from representations of RF signals associated with discrete RF events, and embeddings generated by the spectrum encoder are decoded to classify the RF signals or a source of the RF signals. Additionally, a spectrum decoder of a transformer model is configured to receive a query for information and to generate a response to the query using a spectrum decoder that performs attention on embeddings received from a spectrum encoder, as well as frequency-encoded features representative of the query, and features representative of semantic information regarding RF signals and sources of the RF signals.

A payment terminal comprising a controller is provided. The controller is configured to: (1) generate, via a transceiver electrically coupled to an antenna, an RF radiation field; (2) capture, via the transceiver, a plurality of samples of the RF radiation field; (3) determine sample characteristics based on the plurality of samples; (4) determine comparison metrics by comparing the sample characteristics to one or more baseline characteristics; and (5) set a skimming detection flag based on the one or more comparison metrics. The controller is configured to operate in a payment processing state or an idle state. In some examples, the samples of the RF radiation field are only captured if the payment terminal is in the idle state.

A system includes at least one processor, and a memory that includes computer program code. The memory and the computer program code are configured to, with the at least one processor, cause the at least one processor to monitor a radio frequency (RF) spectrum within an area to detect RF emissions from RF emitters, acquire emission data of the detected RF emissions, process the acquired emission data to determine approximate locations of the RF emitters, and compile the determined approximate locations and acquired emission data into an RF landscape map of the area.

A method for decoating a glazing unit made of a glass panel with a glass sheet which is low in reflectance for RE radiation, where the glass panel has a bent portion with an axis of curvature. The glazing unit also includes a coating system which is high in reflectance for RF radiation disposed on the glass sheet over part of the bent portion. The decoating method includes: decoating a frequency selective surface on the coating system by decoating a matrix of decoated grids; each of the decoated grids has decoated regions in the form of grid lines arranged in a mesh-like manner; each of the decoated grids has a rectangular generic shape; and the decoating is performed by using a laser apparatus. Each of the decoated grids is inscribed in a specific rectangle paralleled to the axis of curvature, and each is oriented by an angle αmn.

An antenna and method for using the same having a hybrid feed approach. In some embodiments, the metasurface antenna with dual beam capabilities is feed with feed waves from a center-fed waveguide structure and an edge-fed waveguide structure. In some embodiments, the antenna comprises an array of radio-frequency (RF) radiating antenna elements and operable to generate two beams simultaneously in response to interacting with two propagating waves at a same time; and a feed structure coupled to feed the two waves to the array of RF radiating antenna elements, the feed structure having a first waveguide beneath the RF radiating antenna elements in which the two waves propagate in opposite directions.

An electronic device may include a set of antenna panels (APs) that transmit and receive signals within a set of signal beams. A proximity sensor such as a radar sensor may gather sensor data indicative of the position an external object. The device may select an AP and a beam that maximize wireless performance in communicating with a base station while also complying with the radio-frequency exposure (RFE). The device may select the AP and the beam based on the sensor data, per-panel and per-beam projected RFE values, antenna port RFE characteristics, per-panel and per-beam transmit power limits, per-beam transmit power backoffs, an RFE lookup table, regulatory RFE limits, and antenna performance metrics. The device may transmit an RFE report to the base station that identifies some or all of this information for use in updating scheduling for the device.

An RF infrastructure sentry system includes one or more sensors configured to detect that an object has entered an area of concern proximate to an RF radiation source and an RF mitigation system operatively connected to the one or more sensors. The RF mitigation system includes an electrical input operatively connected to a power supply for the RF radiation source; an electrical output operatively connected to the RF radiation source; a relay disposed on an electrical path between the electrical input and the electrical output and configured to selectively connect or disconnect the electrical input and the electrical output through the electrical path; and a processor operatively connected to the relay and configured, at least in response to detection by the one or more sensors that the object has entered the area of concern, to open the relay to temporarily interrupt power to the RF radiation source.

Antennas and methods for using the same are described. In one embodiment, the antenna comprises an aperture having a plurality of radio-frequency (RF) radiating antenna elements, the plurality of RF radiating antenna elements being grouped into three or more sets of RF radiating antenna elements, with each set being separately controlled to generate a beam at a frequency band in a first mode.

An aerosol generating device, and a method for controlling heating of the aerosol generating device. The aerosol generating device comprises a radio frequency source, and a power supply and a radio frequency heating assembly both connected to the radio frequency source. The power supply is used for providing a direct current signal to the radio frequency source. The radio frequency source is used for converting the received direct current signal into an electromagnetic wave signal and transmitting the electromagnetic wave signal to the radio frequency heating assembly. The radio frequency heating assembly comprises a radio frequency radiator (1) in which a resonant cavity (13) is formed and a transmission connector (3) mounted on the radio frequency radiator (1). The transmission connector (3) is used for receiving the electromagnetic wave signal to cause the resonant cavity (13) to generate resonance. A coaxial accommodating cavity (131) is further formed in the resonant cavity (13). The accommodating cavity (131) is used for accommodating a medium to be heated (5). A notch (14) is formed on the radio frequency radiator (1). The notch (14) is in communication with the resonant cavity (13) and is arranged on the outer side of the accommodating cavity (131) in an annular configuration.

Antennas and methods for using the same are described. In one embodiment, the antenna comprises an aperture having a plurality of radio-frequency (RF) radiating antenna elements, the plurality of RF radiating antenna elements being grouped into three or more sets of RF radiating antenna elements, with each set being separately controlled to generate a beam at a frequency band in a first mode.

The present invention discloses a glazing unit including a glass sheet having low reflectivity to RF radiation, a coating system having high reflectivity to RF radiation disposed on the glass sheet, and at least one frequency-selective uncoated grid portion on the coating system, the at least one frequency-selective uncoated grid portion including a first uncoated grid and a second uncoated grid, each of the first uncoated grid and the second uncoated grid having a uncoated area in the form of grid lines arranged in a mesh, the first uncoated grid being connected to the second uncoated grid at a connection region, at least in the connection region, the first uncoated grid including a rake design with at least one missing tooth, and the second uncoated grid including a rake design. The present invention also discloses related methods, related apparatus, and uses.

Routing and layout for an antenna are described. In one embodiment, the antenna comprises an aperture having a plurality of radio-frequency (RF) radiating antenna elements, wherein each antenna element of the plurality of RF radiating antenna elements comprises an iris slot opening and an electrode over the iris slot opening; a plurality of drive transistors coupled to the plurality of antenna elements; and a plurality of storage capacitors, each storage capacitor coupled to the electrode of one antenna element of the plurality of antenna elements. The aperture also comprises at least one of: the drive transistor for the one antenna element is located under the electrode of the antenna element, the storage capacitor for the one antenna element is located under the electrode of the antenna element, and the metal routing to the one antenna element for a first voltage overlaps, in an overlap region, a common voltage routing that routes the common voltage to the one antenna element to form a storage capacitance.

Certain aspects of the present disclosure relate to beam selection. An example method generally includes selecting, from a plurality of beams, a beam for uplink transmission during a particular time interval, the selecting being based on a transmission power and a radio frequency (RF) exposure for each of the plurality of beams and transmitting at least one uplink signal using the selected beam during the particular time interval.

Certain aspects of the present disclosure provide techniques for operating a wireless device pursuant to radio frequency (RF) exposure compliance. A method that may be performed by a wireless device includes switching sensing circuitry to a first mode in response to one or more first criteria being satisfied; switching the sensing circuitry to a second mode in response to one or more second criteria being satisfied; and transmitting a signal at a transmit power determined based at least in part on a radio frequency (RF) exposure limit, and if the sensing circuitry is operating in the second mode, on one or more measurements associated with the sensing circuitry.

The present application provides an aerosol substrate heating parameter analysis method, a related device, and a storage medium. The aerosol analysis method is applied to an aerosol-generating system. The aerosol-generating system comprises a power supply, a radio frequency source, and a radio frequency radiator. The radio frequency radiator is configured to serve as a container for accommodating an aerosol substrate and as a radiating element for generating a heating electric field. The method comprises: equivalently modeling the aerosol-generating system in an unloaded state as a first RLC circuit; when the aerosol-generating system is in a loaded state, equivalently modeling the aerosol substrate and the radio frequency radiator as a parallel capacitor, and, on the basis of the parallel capacitor, replacing a capacitor in the first RLC circuit to form a second RLC circuit for the aerosol-generating system in the loaded state; and, on the basis of the second RLC circuit, analyzing changes in target parameters of the aerosol substrate during a heating process.

A radio frequency radiator structure and an aerosol generation device. The aerosol generation device is configured to generate a power signal and transmit same to the radio frequency radiator structure. The radio frequency radiator structure comprises a dielectric substrate (1) and an antenna structure (2), wherein the dielectric substrate (1) encloses to form an accommodating cavity (10), and the accommodating cavity (1) is configured to accommodate a heated medium (3); the antenna structure (2) is fixed to an inner surface of the dielectric substrate (1), there is a slot area (20) inside the antenna structure (2), and the antenna structure (2) is provided with an opening, which is connected to the slot area (20); and the antenna structure (2) is configured to receive the power signal to form a high-field-strength distribution in the slot area (20). The antenna structure (2) is conformal with the inner surface of the dielectric substrate (1), and the antenna structure (2) has the slot area (20), such that the high-field-strength distribution is realized in the slot area (20); a high-frequency electric field is restricted inside the heated medium (3), so that the heating effect of the heated medium (3) is improved; moreover, the structure is simplified, and costs are reduced.

The invention provides a radio frequency radiator structure and an aerosol generating device. The aerosol generating device is used for generating a power signal and transmitting the power signal to the radio frequency radiator structure. The radio frequency radiator structure comprises a dielectric substrate and an antenna structure, the dielectric substrate is enclosed to form an accommodating cavity, and the accommodating cavity is used for accommodating a heated medium; the antenna structure is fixed on the inner surface of the dielectric substrate, a slot area is arranged in the antenna structure, the antenna structure is provided with an opening, and the opening is connected with the slot area; the antenna structure is used for receiving power signals so as to form high field intensity distribution in the gap area. The antenna structure and the inner surface of the dielectric substrate are conformal, the antenna structure is provided with a gap area, high field intensity distribution in the gap area is achieved, a high-frequency electric field is restrained in a heated medium, and the heating effect of the heated medium is improved; the structure is simplified and the cost is reduced.