789results about "Loop antennas" patented technology

Disclosed is an electronic device. The electronic device may include a housing forming a first space configured to seat an external electronic device and a second space, a battery storing power, a support part disposed within the first space and configured to support the external electronic device when the external electronic device is seated in the electronic device, a first antenna and a second antenna disposed in the support part, a third antenna disposed in the second space and configured to receive a first magnetic field from the outside of the housing and to supply power to the battery. The battery may be disposed in the second space. The battery may radiate a second magnetic field to at least some area of the first space by supplying power to at least one of the first antenna and the second antenna.

A method for manufacturing a nozzle cap, the method including attaching an antenna printed circuit board (“PCB”) strip to an inner cover surface of an antenna cover; and inserting the antenna cover into a scallop defined by a circumferential wall of a cap body to position the antenna PCB strip between the antenna cover and the circumferential wall, the circumferential wall defining an outer wall surface, the antenna cover covering the scallop, the scallop extending radially inward into the circumferential wall relative to a first portion and a second portion of the outer wall surface, the scallop circumferentially positioned between the first portion and the second portion of the outer wall surface.

A device for detecting the movement of part of a user's body and / or the approach of a portable user device. The device placed on board a motor vehicle. The device includes: a near field communication antenna having a resonance frequency between 3 and 30 MHz, including at least one continuous winding in the form of at least two sets of strips, each having different variable capacitance and different sensitivity, connected in parallel with the antenna. The antenna generating a different variation of impedance on the approach of part of a user's body towards the first or second set; a device measures a variation of impedance of the antenna. The device has a high series resonance frequency and detects the approach of a portable user device or movement of the body part taking place consecutively in front of the first and then in front of the second set of strips.

The embodiment of the invention provides wearable electronic equipment, and belongs to the technical field of electronic equipment. The wearable electronic equipment comprises a shell and an antenna device. Wherein the shell comprises a contact surface, and the contact surface is used for being in contact with a wearer. The antenna device is arranged in the shell, the antenna device comprises a first antenna structure and a second antenna structure, and the first antenna structure and the second antenna structure are used for generating resonance at the same time. The first antenna structure, the second antenna structure and the contact surface are sequentially arranged along the thickness direction of the shell, and the first antenna structure and the second antenna structure are arranged at an interval. The projection of the second antenna structure and the projection of the first antenna structure are at least partially overlapped in the thickness direction of the shell. Therefore, the absorption of electromagnetic energy by a human body can be reduced, and the antenna efficiency is improved.

Exemplary embodiments may provide an adhesive pad that is designed to be used with an on-body medical device. The adhesive pad may partially or fully surround a perimeter of the on-body medical device. The adhesive pad may be the primary mechanism or may provide an additional mechanism for helping to secure the on-body medical device to the user. In addition, the adhesive pad may include a metallic coil, such as a metal loop, that is woven into the adhesive pad or otherwise inserted into or secured to the adhesive pad. The metallic coil may play multiple roles. First, the metallic coil may act as an antenna to facilitate wireless communications with the on-body medical device, such as NFC communications. In addition, the metallic coil may serve as a power source for electric components positioned on the adhesive pad.

Provided are a mounting member with an RFID tag comprising an RFID tag, the RFID communication sensitivity of which is improved, and a manufacturing method of the mounting member with an RFID tag. The mounting member with an RFID tag comprises a shaft shape unit 1-1, an RFID tag 1-3, a boost antenna 1-4, and a head unit 1-2. The shaft shape unit 1-1includes a shaft shape insert unit 1-11, and a base unit 1-12 formed by protruding one end part of the insert unit 1-11 in a width direction. The RFID tag 1-3 transmits and receives radio waves. The boost antenna 1-4 boosts the radio waves transmitted and received by the RFID tag 1-3. The head unit 1-2 molds at least a surface side of the base unit 1-12 in order to encapsulate the RFID tag 1-3 and the boost antenna 1-4.

This application provides an electronic device. The electronic device includes a back cover, a camera bracket, and an NFC antenna. The camera bracket is disposed on the back cover and includes a first surface and a second surface disposed opposite to each other. The first surface of the camera bracket faces outwards from the electronic device. The camera bracket has a first light-transmitting hole for facing a first flash or a first camera. The NFC antenna is disposed on the first surface of the camera bracket. The first orthographic projection of the NFC antenna onto the first surface of the camera bracket falls within the first surface of the camera bracket and does not overlap with the first light-transmitting hole, so that the NFC antenna avoids the first light-transmitting hole. This application provides a solution that enables the NFC antenna to maintain good radiation performance even in scenarios where the number of cameras is increasing and the camera bracket is becoming larger.

The invention relates to a lower frequency band radiating element with reduced scattering of higher frequency band radiation. A radiating element includes: a feed stem printed circuit board including a first RF transmission line and a second RF transmission line; a first dipole radiator coupled to the first RF transmission line; and a second dipole radiator coupled to the second RF transmission line. The first dipole radiator comprises a first dipole arm and a second dipole arm, and the second dipole radiator comprises a third dipole arm and a fourth dipole arm. A first amount of coupling between the first dipole arm and the third dipole arm exceeds a second amount of coupling between the first dipole arm and the fourth dipole arm.

According to an aspect, there is provided a method (100) of manufacturing a communications component for an attachment assembly of an oral care device, the method comprising: creating (102) an antenna assembly; and fitting (110) the antenna assembly to a cold-formed metal ring. Creating (102) the antenna assembly comprises forming (104) a base of the antenna assembly using an injection moulding process; positioning (106) an antenna on the base; and forming (108) a cover over the base and the antenna using an injection moulding process.

The low-frequency electromagnetic wave has the characteristics of high penetrability and low signal attenuation, and can be widely applied to the fields of underground communication, underwater communication and the like. Most existing low-frequency transmitting antennas are electrically small antennas, have the problems of large size, complex equipment, short transmission distance and the like, and are difficult to meet actual requirements. The invention relates to a high-power pulse low-frequency antenna based on a Tesla coil. The high-power pulse low-frequency antenna is a high-power pulse transmitting antenna composed of a solid-state double-resonance Tesla circuit, a transformer, a primary coil and a secondary coil. The antenna adopts a high-voltage pulse generated by a Tesla circuit for feeding, and meanwhile, a transformer type impedance matching network is combined, so that the feed power is maximized. The radiation coil selects a primary and secondary nested coupling structure, the working frequency is accurately adjusted to be the output frequency of the Tesla circuit by respectively connecting resonant capacitors in series to the primary and secondary coils, and effective amplification of radiation signals is realized based on a magnetic coupling effect. The size of the coil is in the sub-cubic meter level and is within one thousandth of the working wavelength. Aiming at the antenna design difficulty in long-wave communication, the antenna has the advantages of high input power, long-distance transmission and small physical size, and has potential application value in the fields of cross-medium communication, emergency management communication and the like.

The application relates to a smart card comprising a first, second and third coil. The second coil is part of an LC network and is preferably positioned within the third coil. The second coil improves the tuning of the third coil, which acts as an antenna coil, to match the third coil to an external reader. This arrangement allows improved interaction between the smart card and an external reader.

A single-layer broadband vertically polarized endfire magnetoelectric dipole (ME-dipole) antenna and an antenna array. The main radiator of this antenna is a substrate-integrated closed loop, which consists of two horizontal metallic strips printed on the upper and lower surfaces of substrate and a pair of vertical metallic vias. Excited by a double-sided parallel-strip line at the center of the loop, the metallic vias function as electric dipoles while the entire loop aperture works as magnetic dipole. To facilitate integration, this magnetoelectric dipole loop antenna is fed by an open-ended substrate integrated waveguide (SIW), which also works as a backed cavity to enhance the front-to-back ratio. Moreover, rectangular slots are etched at the edges of the SIW aperture to further improve the front-to-back ratio and also the cross-polarization performance. Thus, a vertically polarized endfire ME-dipole loop antenna with a low-profile structure, broad bandwidth, and stable radiation performance is achieved.

A horizontally-polarized omnidirectional antenna, including: a body including: a host printed circuit board (PCB) including: a metal-flooded ground plane, windows, and an interconnect providing a radio frequency (RF) signal splitting off into 2*Z0 transmission lines, a plurality of antenna elements, corresponding to respective windows, including: an antenna PCB including an antenna slot having a pullback region with the host PCB therein without directly contacting the pullback region, the window in the antenna slot, loops of conducting strips at top and bottom sides of the antenna PCB, slightly overlapping to form capacitive elements at overlap regions, a pair of input solder joints at respective input conducting strips on the top of the antenna PCB, on opposite sides of the window, a transmission feed solder joint directly between the pair of input solder joints across the window, connected to a Z0 feed line, and an RF connector receiving an antenna power supply.

Provided are a circularly polarized antenna structure and a wearable device. The circularly polarized antenna structure is applicable to the wearable device and includes: a mainboard; an annular radiator, having an effective perimeter equal to a wavelength corresponding to a central operating frequency of the antenna structure; a feeding terminal electrically connected to the radiator at one end and connected to a feeding module of the mainboard at the other end; and a grounding terminal electrically connected to the radiator at one end and electrically connected to a grounding module of the mainboard through a first capacitor at the other end. With the antenna structure of the present disclosure, a circularly polarized antenna may be implemented in the wearable device.

This application provides a multi-band shared-aperture antenna. The multi-band shared-aperture antenna includes a first antenna array, a second antenna array, and a reflection panel, where the first antenna array includes four first dielectric plates perpendicular, two adjacent first dielectric plates are perpendicular to each other, the first antenna array includes four hollowed butterfly dipole units, the dipole unit includes two radiation arms, the two radiation arms are respectively printed on two adjacent first dielectric plates, the radiation arm includes a first part and a second part, a first feeding stub is disposed on the first dielectric plate, the second part has a specified width in a direction perpendicular to the reflection panel, the second antenna array includes a plurality of second dielectric plates, four ring-shaped coils are disposed on any one of the second dielectric plates, and the ring-shaped coil is connected to a second feeding stub.

A communication device for determining a position of a communication partner, wherein the communication device has a first circular antenna, at least one further circular antenna, a circuit board, and a communication module situated at the circuit board. The circuit board includes at least one first copper layer and a second copper layer. The first antenna has a first recess that is formed in the first copper layer, a first ground plane, and a first excitation structure. The at least one further antenna has a further recess that is formed in the first copper layer, a further ground plane, and a further excitation structure. The first ground plane is spaced apart from the further ground plane to electromagnetically decouple the first antenna from the at least one further antenna.

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 present application is applicable to the field of antenna technology, and provides a circularly polarized antenna and an intelligent terminal. The circularly polarized antenna includes an annular radiator and a first feed terminal. A first breakpoint is provided on the radiator, and a first capacitor or a first inductor is connected in series with the radiator at the first breakpoint. One end of the first feed terminal is electrically connected to the radiator, and another end of the first feed terminal is electrically connected to a first feed module of a mainboard. When a capacitor or inductor is connected in series with the radiator at the first breakpoint, the resonance frequencies of a first mode and a second mode excited on the radiator which are mutually perpendicular will both change, so that the difference between the resonance phase of the first mode and the resonance phase of the second mode reaches 90°, thereby the circular polarization is realized which improves satellite positioning performance.

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.

Dual-antenna communication devices and methods are disclosed. The device comprises: a controller, having a first, output, interface, comprising a first connector and a second connector; a first antenna coupled between the first connector and a ground; anda second antenna, coupled between the first connector and the second connector; wherein the controller is configured to: transmit an output signal from the first antenna by providing a signal at the first connector and an in-phase copy of the signal at the second connector, and transmit the output signal from the second antenna by providing the signal at the first connector and an opposite-phase copy of the signal at the second connector.

Disclosed are systems, methods, devices, antenna arrays, and other implementations, including a microwave antenna array that includes a plurality of single loop antennas mounted on a holding structure, and a phase tuner to control the phases of signals radiated (emitted) by each of the plurality of single loop antennas to control polarization of a resultant microwave field generated by the plurality of single loop antennas. In some examples, the plurality of single loop antennas includes four single loop antennas, mounted on the holding structure, to define a cloverleaf shaped antenna array arrangement.

A wearable electronic device is provided. The wearable electronic device includes a first antenna structure disposed on an antenna carrier, a printed circuit board, a semiconductor packaging substrate packaged with the printed circuit board, a second antenna structure disposed on at least a portion of a surface of the semiconductor packaging substrate, and a contact structure electrically connecting the first antenna structure and the second antenna structure.

The utility model discloses a vehicle-mounted short-wave double-loop antenna lodging device, which comprises a case, a driving assembly, an antenna fixing platform and a rotating arm, the driving assembly is arranged in the case; the antenna fixing platform and the case are oppositely arranged, and the antenna fixing platform is provided with an antenna large-ring oscillator mounting interface, an antenna small-ring oscillator interface, an antenna supporting rod mounting interface, an antenna large-ring oscillator antenna adjustment connecting port and an antenna small-ring oscillator antenna adjustment connecting port; the antenna large-ring oscillator mounting interface is connected with the antenna large-ring oscillator antenna tuning connector; the antenna small ring oscillator interface is arranged at the center of the antenna support rod mounting interface and is connected with the antenna small ring oscillator antenna adjustment connector; and two ends of the rotating arm are respectively connected with the case and the side wall of the antenna fixing platform. According to the utility model, the installation height of the dual-ring antenna can be effectively reduced, so that the impact, vibration and wind resistance borne by the dual-ring antenna are reduced.

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.

Antenna elements include a metallic square ring patch and a metallic square ring slot to transmit or receive radio frequency (RF) signals. The antenna elements use several dielectric layers that are separated by a low-dielectric foam layer upon which the square ring patch is positioned. The antenna elements may be arranged into an antenna array that is tunable to collectively generate or receive RF signals to and from airborne and mobile vehicles with an agile, electronically scanning antenna array beam, with no moving parts. The antenna array includes a top section to communicate RF signals; a bottom section to generate a desired RF signal; and a foam layer between the top and bottom sections to separate the ring patch from the ring slot. High isolation between the top section and the bottom section allows the antenna elements to be used in higher gain and high-power arrays without adverse feedback issues.

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.