426results about "Loop antennas" patented technology

This specification provides a circuit unit for implementing near field communication and an NFC device. The solution includes an NFC antenna, an NFC chip, and an excitation circuit, where the NFC antenna is connected to the NFC chip, the NFC chip is connected to the excitation circuit, and the NFC chip is configured to: obtain first energy in a case that the NFC antenna senses a radio frequency field of a user terminal device, and provide a part of the first energy to the excitation circuit; and the excitation circuit is configured to generate and send an excitation signal by using energy obtained from the NFC chip, wherein the excitation signal is used to excite the user terminal device to communicate with a device comprising the circuit unit.

This specification provides a circuit unit for implementing near field communication and an NFC device. The solution includes an NFC antenna, an NFC chip, and an excitation circuit, where the NFC antenna is connected to the NFC chip, the NFC chip is connected to the excitation circuit, and the NFC chip is configured to: obtain first energy in a case that the NFC antenna senses a radio frequency field of a user terminal device, and provide a part of the first energy to the excitation circuit; and the excitation circuit is configured to generate and send an excitation signal by using energy obtained from the NFC chip, wherein the excitation signal is used to excite the user terminal device to communicate with a device comprising the circuit unit.

The invention discloses an antenna module and electronic equipment, and belongs to the technical field of communication. The antenna module comprises a first radiator, a second radiator and a feed source. The first radiator is of an annular structure; the feed source is electrically connected with the first end of the second radiator, and the second end of the second radiator is grounded; the first radiator and the second radiator are stacked and arranged at intervals, a projection area of a first part of the first radiator on the second radiator is at least partially overlapped with a middle area of the second radiator, the first part is located on a first symmetry axis of the first radiator, and the second part is located on a second symmetry axis of the second radiator. The first symmetry axis is located in the plane where the first radiator is located, and the first symmetry axis is perpendicular to the extending direction of the second radiator. Wherein under the condition that the feed source works, a current strong point and a current weak point on the second radiating body are both located in the middle area of the second radiating body.

The invention provides an electronic device and a communication system. The electronic device comprises a functional conductor and an NFC antenna radiator. The functional conductor is annular, and the inner edge of the functional conductor is enclosed to form a hollow area. The NFC antenna radiator is located on one side of the functional conductor and receives and transmits NFC signals at least towards the side where the functional conductor is located, and the orthographic projection of at least part of the NFC antenna radiator on the plane where the functional conductor is located is located in the hollow area. Wherein the NFC antenna radiator is used for being electrically connected with a radio frequency signal source, and under excitation of the radio frequency signal source, the NFC antenna radiator generates a first electromagnetic field and a second electromagnetic field which are opposite in direction in the hollow area, so that the functional conductor generates a first induction current and a second induction current which are opposite in direction. A communication system includes an NFC device and an electronic device. According to the electronic equipment and the communication system provided by the invention, the NFC communication performance can be improved, and the user experience is improved.

This application provides an electronic device. The electronic device includes a rear cover, a camera bracket, and an NFC antenna. The camera bracket is disposed on the rear cover and includes a first surface and a second surface that are oppositely disposed. The first surface of the camera bracket faces an outer side of the electronic device. A first light hole is disposed in the camera bracket, and the first light hole is configured to be opposite to a first camera flash or a first camera. The NFC antenna is laid on the first surface of the camera bracket. A first orthographic projection of the NFC antenna on the first surface of the camera bracket falls into the first surface of the camera bracket and does not overlap the first light hole, so that the NFC antenna avoids the first light hole. In this application, an NFC antenna still has good radiation performance in a scenario in which a quantity of cameras is increasingly large and a camera bracket is increasingly large.

A multi-resonant antenna comprises a main antenna and an additional radiation element. The main antenna comprises a main portion and a feeding portion. The main portion forms a split ring. The feeding portion extends outward of the main antenna from the main portion. The additional radiation element extends outward of the main antenna directly from the feeding portion.

Improved RFID devices and manufacturing methods that utilize more efficient RFID designs, result in less manufacturing material waste and increased recycling opportunities, all without sacrificing RFID device performance, are disclosed herein. Some exemplary embodiments of the improved RFID device may make use of a thinner foil, a hollowed-out foil, a “no-strip” design, or a tessellated design that may reduce material usage. Other exemplary embodiments may use a lower-impact and / or biodegradable adhesive so as to improve aluminum recycling and lessen risks to the environment.

The application discloses a flexible graphene RFID ear tag antenna based on informationized livestock management, which comprises a substrate, a tag antenna and a radio frequency identification chip; the tag antenna comprises a symmetric loop dipole with double radiation arms bent inward, a feeding structure based on T-shaped matching and a complete circular ring located at the inner side; the tag antenna and the radio frequency identification chip are arranged on the substrate; the symmetric loop dipole with double radiation arms bent inward comprises an outer ring and an inner ring; the connecting line between the center point of the interval distance between the symmetric loop dipole arms and the center point of the loop is a symmetric line; the feeding structure based on T-shaped matching is symmetrically arranged along the symmetric line at the intersection point of the symmetric line and the outer ring to form a short-circuit branch; and the intersection point is connected with the radio frequency identification chip as a feeding port. The application can be used for informationized livestock management and has the characteristics of miniaturization, light weight, flexibility and corrosion resistance.

The application provides an electronic device, comprising: a main body; a decorative ring arranged on the main body; and a circuit board assembly arranged on the main body and located at a circumferential side of the decorative ring, wherein the decorative ring and the circuit board assembly form a near field communication antenna.

A probe for monitoring stents comprising: a first coupling port to launch an electromagnetic field onto a stent, such that a guided electromagnetic wave may be propagated through at least a portion of the stent; and a second coupling port to collect the electromagnetic field from the guided electromagnetic wave of the stent. Also provided is a system comprising the probe, and a method for monitoring stents comprising: sensing an input signal related to an electromagnetic field launched by the first coupling port onto the stent, and sensing an output signal related to the electromagnetic field collected by the second coupling port; obtaining a transmission coefficient between the first coupling port and the second coupling port; performing a frequency response of the transmission coefficient; and comparing the frequency response of the transmission coefficient with a reference frequency response.

The packaging box comprises an upper shell body and a lower shell body, the rear side of the upper shell body and the rear side of the lower shell body are hinged together through a hinge, butterfly locks are arranged on the front side of the upper shell body and the front side of the lower shell body and used for fixing the upper shell body and the lower shell body together after the upper shell body and the lower shell body are closed, the lower shell body is filled with lower sponge, and the upper shell body and the lower shell body are connected through a hinge. A special-shaped groove, a circular groove and an L-shaped sinking groove are formed in the lower sponge. The packaging box has two use functions, can store the loop antenna, can replace a tripod to erect the loop antenna, can reduce the carrying difficulty during outdoor work, and meanwhile has the advantages of being simple in structure, low in machining cost, convenient to operate and the like.

An electronic device comprises an antenna that has an annular shape in a plan view from a first direction and has at least an outer peripheral edge and an inner peripheral edge, and a device case that accommodates the antenna inside. The antenna comprises at least one latch that is integral to the inner peripheral edge. The device case has a catch at a position corresponding to the latch of the antenna.

The present disclosure discloses an electronic shelf label, including: at a position outside a PCB of the electronic shelf label, a passive NFC antenna that does not have an electrical connection with an existing NFC antenna is added, and the passive NFC antenna is coupled with the existing NFC antenna. The present disclosure improves the NFC signal strength and NFC field strength distribution both of which are near the electronic shelf label screen, in the case that the size of the electronic shelf label is limited and the NFC antenna is shielded by the screen, battery, structural parts, etc, thereby improving NFC communication distance, effective sensing area, trigger response speed and other performance of the shelf label.

An antenna impedance matching design circuit includes a load circuit, a filter circuit and a matching circuit which are connected to each other. The load circuit is connected to one end of the filter circuit for connecting a near field communication chip, and the matching circuit includes a plurality of capacitors.

An electronic device is provided, comprising: a housing having a first surface facing a first direction and a second surface facing a second direction opposite to the first direction. The electronic device further comprises: a conductive pattern having a first conductive coil whose axis is substantially perpendicular to either the first or the second direction. The electronic device further comprises: a communication circuit configured to cause the first conductive coil to generate magnetic flux. The second surface comprises a first region made of a conductive material and a second region made of a non-conductive material. When viewed from the second surface, the first conductive coil is substantially disposed below the first region. The first conductive coil is configured to include: a first portion disposed near or on the second region to allow the magnetic flux to pass through the second region.

The present application provides an electronic timepiece, capable of forming a holding surface of a holding glass cover of a timepiece housing by a conductive material, capable of improving antenna performance. An electronic timepiece characterized by having: a housing of a conductive property; a cover member mounted to the housing; a hand; a hand shaft on which the hand is mounted; and an antenna that receives a prescribed electric wave and is configured to overlap the cover member when viewed from above in a first direction parallel to an axial direction of the hand shaft, the cover member being composed of a material that shortens a wavelength of the electric wave, the housing having an opposing surface that opposes a side surface of the cover member and is disposed at a position within a prescribed dimension from the side surface, a height dimension from an end of the opposing surface farthest from the antenna to a farthest portion of the cover member farthest from the antenna in the first direction being 1 / 60 or more of the wavelength shortened by the cover member.

A vehicle pillar assembly (100) is provided, including an exterior trim panel (10), a near field communication (NFC) antenna module (20), and an NFC circuit board (30). The exterior trim panel (10) has an inner surface (12) facing an interior of a vehicle (1000). The NFC antenna module (20) is connected to the inner surface (12). The NFC circuit board (30) is located on a side of the exterior trim panel (10) facing the interior of the vehicle (1000). The NFC antenna module (20) and the NFC circuit board (30) are structurally separated from each other, and the NFC antenna module (20) is electrically connected to the NFC circuit board (30) via an electrical connection member. The NFC circuit board and the NFC antenna module are designed to be separate from each other, which avoids disadvantages of integrated NFC modules, such as occupying excessive mounting space and weakening the strength of a side enclosing sheet metal of the pillar assembly. A vehicle is further provided.

An electronic device includes a metal side wall, a first radiator, and a second radiator. The metal side wall has a first slot including an opening end and a closed end. The closed end is disposed on the metal side wall. The opening end extends to an upper edge of the metal side wall to disconnect the upper edge. The first radiator is apart from the metal side wall, and includes a first end and a second end. The first end is a feeding end. The second end is connected to the upper edge of the metal side wall. The second radiator is apart from the metal side wall, and includes a third end and a fourth end. The third end is connected to the upper edge of the metal side wall. The opening end of the first slot is located between the second end and the third end.

A self-decoupling wideband antenna system and a terminal device, including: a first end of a first radiation stub that is connected to a first ground point, and the first radiation stub is further connected to a first feed point; a first end of a second radiation stub and a first end of a third radiation stub are connected to a second ground point, and a slot is provided between a second end of the second radiation stub and a second end of the first radiation stub. A distance between the second end of the second radiation stub and the second end of the first radiation stub is less than a distance between the first end of the second radiation stub and the second end of the first radiation stub.

The invention relates to a near-field contactless smart card, the card comprising a card body (10) having at least one metallic layer (110), a first antenna layer and a second antenna layer; a chip (11) disposed facing an opening (112) of the metallic layer, with a first antenna (121) formed on a surface of the first antenna layer (120) and connected to the chip (11), and a passive electronic component (12), with a second antenna (131) formed on a surface of the second antenna layer (130) and electronically connected to the component (12).

To provide a compact wideband antenna which can be made small and can be used in a wide frequency band.SOLUTION: A compact wideband antenna includes a ground plate having a ground surface parallel to X and Y directions, a feed plate provided on the ground surface, a power feed unit that is provided between the ground plate and the feed plate and feeds a high-frequency signal to the feed plate, a housing that covers the ground surface, the power feed unit, and the feed plate, and a slot provided on a top plate that is provided on the ground surface of the housing and faces the ground surface. The feed plate has a first portion that is connected to the power feed unit and extends in a Z direction, a second portion extending in an opposite direction to the X direction from an end of the first portion extending in the Z direction, and a third portion that extends in the opposite direction to the Z direction from an end of the second portion extending in the opposite direction to the X direction and is connected to the ground plate. The slot is a single-line slot extending in the Y direction, and a part of the single-line slot overlaps with a part of the feed plate.SELECTED DRAWING: Figure 1A

An RFID antenna for a container having an electroconductive container component is described. The RFID antenna comprises an antenna body having a surface comprising at least a portion of the electroconductive container component. The antenna body is shaped to define an antenna volume for receiving one or more RFID tagged items, and the antenna body forms a single turn solenoid. The RFID antenna further comprises at least one current feed point and at least one current return point, the feed and return points electrically connected to the antenna body so that a current flowing through the antenna body generates a magnetic field within the antenna volume for reading RFID tags.

The invention relates to an antenna for an electronic payment terminal (2), comprising:-a support member (4) comprising a plurality of support elements (10), the overall shape of which is a straight cylinder having a concave bottom, the axial ends of which are hinged in pairs on a pivot connection (12) having parallel axes of rotation, each support element (10) having a receiving groove; and-an electrically conductive member (6) arranged to be received in the receiving groove.

To improve the amplification and efficiency of an antenna contained within a rectenna. Antenna device comprising: a first conductor having a loop shape; a rectifier circuit connected to the first conductor; and a second conductor having a plate shape, comprising a main area extending in one direction substantially orthogonal to a loop area of ​​the first conductor, and an outer edge portion of the main area, wherein the first conductor has a loop whose length in relation to a wavelength at a receiving frequency is greater than 0.15, and the second conductor has the outer edge portion whose minimum length in relation to the length of the loop of the first conductor is greater than 0.4.

The present invention relates to a radio frequency identification tag to be embedded into a tire, and according to one embodiment of the present invention, the radio frequency identification tag to be embedded into a tire is technically characterized by comprising: a PCB substrate having a prescribed length; an antenna having a predetermined length, formed in a spiral shape, and fitted along the longitudinal direction of the PCB substrate; and a radio frequency identification (RFID) chip which is provided in the central portion of the PCB substrate and which wirelessly receives data from the antenna, the PCB substrate and the antenna being spaced apart from each other by a predetermined distance as the front / rear width of the interior of the antenna formed by the spiral shape is larger than the front / rear width of the PCB substrate, and the PCB substrate and the antenna forming a space portion, the space portion being spaced apart from each other by a predetermined distance. And a part of the antenna is arranged in the protective cover, so that the interval between the radio frequency identification chip and the antenna is kept constant.

This application provides a stylus pen (10), and relates to the field of wireless communication. The stylus pen (10) includes: a pen barrel, where the pen barrel extends along a longitudinal axis, and the pen barrel includes a main body (110), a pen nib part (130) disposed at one end of the main body (110), and a pen end part (120) that is disposed at another end of the main body (110) and that corresponds to the pen nib part (130); and an antenna (140), where the antenna (140) is disposed on the main body (110) of the pen barrel, and at least one part of the antenna (140) is located outside the pen barrel and is close to the pen nib part (130) and / or the pen end part (120). The stylus pen (10) can be designed with the antenna (140) by using an existing metallic component, to reduce space occupied by the antenna. The stylus pen (10) is designed with dual antennas on a stylus, and an antenna switching technology is used to resolve delay increase caused by holding the stylus by a user during use, to improve user experience.

The present disclosure provides a Radio Frequency Identification (RFID) device comprising an antenna formed from an electrically conductive material, a loop operatively coupled to the antenna, and an integrated circuit (IC) operatively coupled to the matching loop. The antenna exhibits improved performance when the RFID device is placed on packages containing high-dielectric materials.

The utility model provides an ink screen display module, an electronic equipment shell and an electronic price tag, the ink screen display module comprises a display substrate, the display substrate is provided with a display area and a peripheral area surrounding the display area, the display substrate comprises a base and an electronic ink display layer arranged on the base, and the electronic ink display layer is arranged in the peripheral area; the electronic ink display layer is at least partially located in the display area; the circuit substrate is adjacent to the display substrate and at least comprises a communication circuit of a near field communication module; an antenna circuit of the near field communication module is further integrated on the substrate, the antenna circuit is connected with the communication circuit, and the antenna circuit comprises a first antenna circuit located in the peripheral area and / or a second antenna circuit located in the display area. According to the ink screen display module, the electronic equipment shell and the electronic price tag, the thickness of the whole module can be reduced, and the ink screen display module is suitable for more application scenes.