181 results about "Near field coupling" patented technology

Tightly-coupled near-field transmitter / receiver pairs are deployed such that the transmitter is disposed at a terminal portion of a first conduction path, the receiver is disposed at a terminal portion of a second conduction path, the transmitter and receiver are disposed in close proximity to each other, and the first conduction path and the second conduction path are discontiguous with respect to each other. In some embodiments of the present invention, close proximity refers to the transmitter antenna and the receiver antenna being spaced apart by a distance such that, at wavelengths of the transmitter carrier frequency, near-field coupling is obtained. In some embodiments, the transmitter and receiver are disposed on separate substrates that are moveable relative to each other. In alternative embodiments, the transmitter and receiver are disposed on the same substrate.

A handheld electronic device is provided that contains wireless communications circuitry. The wireless communications circuitry may include antennas. An antenna in the handheld electronic device may have a ground plane element. A slot antenna resonating element may be formed from an opening in the ground plane element. A near-field-coupled antenna resonating element may be electromagnetically coupled to the slot antenna resonating element through electromagnetic near-field coupling. A transmission line may directly feed the slot antenna resonating element. The transmission line may indirectly feed the near-field-coupled antenna resonating element through the slot antenna resonating element. The slot antenna resonating element may have one or more associated resonant frequencies and the near-field-coupled antenna resonating element may have one or more associated resonant frequencies. The antenna may be configured to cover one or more distinct communications bands.

A handheld electronic device is provided that contains wireless communications circuitry. The wireless communications circuitry may include antennas. An antenna in the handheld electronic device may have a ground plane element. A slot antenna resonating element may be formed from an opening in the ground plane element. A near-field-coupled antenna resonating element may be electromagnetically coupled to the slot antenna resonating element through electromagnetic near-field coupling. A transmission line may directly feed the slot antenna resonating element. The transmission line may indirectly feed the near-field-coupled antenna resonating element through the slot antenna resonating element. The slot antenna resonating element may have one or more associated resonant frequencies and the near-field-coupled antenna resonating element may have one or more associated resonant frequencies. The antenna may be configured to cover one or more distinct communications bands.

A system having a UHF RFID transceiver is adapted to communicate exclusively with a single electro-magnetically coupled transponder located in a predetermined confined transponder operating region. The system includes a near field coupling device comprising a plurality of lines connected in parallel with an unmatched load. The near field coupling device may be formed, for example on a printed circuit board with a plurality of electrically interconnected traces and a ground plane. The system establishes, at predetermined transceiver power levels, a mutual electro-magnetic coupling which is selective exclusively for a single transponder located in a defined transponder operating region. Also included are methods for selective communication with the transponder in an apparatus such as a printer-encoder.

A system having a UHF RFID transceiver is adapted to communicate exclusively with a single electro-magnetically coupled transponder located in a predetermined confined transponder operating region. The system includes a near field coupling device comprising a plurality of lines connected in parallel with an unmatched load. The near field coupling device may be formed, for example on a printed circuit board with a plurality of electrically interconnected traces and a ground plane. The system establishes, at predetermined transceiver power levels, a mutual electro-magnetic coupling which is selective exclusively for a single transponder located in a defined transponder operating region. Also included are methods for selective communication with the transponder in an apparatus such as a printer-encoder.

Tightly-coupled near-field transmitter / receiver pairs are deployed such that the transmitter is disposed at a terminal portion of a first conduction path, the receiver is disposed at a terminal portion of a second conduction path, the transmitter and receiver are disposed in close proximity to each other, and the first conduction path and the second conduction path are discontiguous with respect to each other. In some embodiments of the present invention, close proximity refers to the transmitter antenna and the receiver antenna being spaced apart by a distance such that, at wavelengths of the transmitter carrier frequency, near-field coupling is obtained. In some embodiments, the transmitter and receiver are disposed on separate substrates that are moveable relative to each other. In alternative embodiments, the transmitter and receiver are disposed on the same substrate.

A Phase-Change Memory (PCM) coupled to receive power provided by near-field coupling to operate the PCM and receive factory programming data entered through the antenna for storage in the PCM.

This invention relates to a realizing method for cell phones with the usage of non-contact IC cards or electronic labels and their readers characterizing in adding an independent non-contact IC card or an electronic label reader module and non-contact IC card or electronic labels on the basis of general cell phone functions, in which, a contacted physical electric connection interface is set between the IC card or label reader module and the cell phone baseband process chip or CPU or SIM to finish the read and write operation and communication function of non-contact IC card or electronic labels, the non-contact physical electric interfaces between non-contact IC card or electronic label and read / write module and other cell phone modules supply energies and communicate by the near field coupling theory, said non-contact IC card or electronic labels have the functions of safety authentication and conflict-proof.

An RFID communication system comprising a near field coupler that is capable of selectively communicating with a targeted transponder positioned among a group of multiple adjacent transponders. The coupler is configured to receive communication signals from a transceiver and transmit the signals to a targeted transponder in a transponder operating region. The coupler includes a number of radiating elements spaced apart and a switching element. The switching element selectively couples one or more of the radiating elements to the transceiver. The coupled elements transmit the signals into the transponder operating region by emanating a near field effect. The pattern of the near field effect may be adjusted by changing the combination of the coupled radiating elements.

The invention discloses a test method and a device for wireless indexes of an active antenna system. An over the air (OTA) test is used for testing spatial characters of the active antenna system and a near field coupling mode is used for testing radio frequency indexes of the active antenna system. The invention also provides a near field coupling test device which is a radio frequency testing cover. By the aid of the near field coupling test device, the radio frequency index test can be conducted to the active antenna system which is an integral device of an antenna and a multi-channel transceiver under the condition that any extra test interfaces are not required to be added. According to the comprehensive test method, the advantages of the OTA test and the near field coupling mode are combined fully, the defects and the problems of the OTA test and the near field coupling mode are overcome, and the test efficiency and the test cost are optimized.

The invention provides a pinpoint enhanced dark-field microscope, an electrochemical testing device and a leveling system. The pinpoint enhanced dark-field microscope is characterized by using an optical fiber probe, wherein metal nanometer particles for decoration are arranged at the pinpoint of the optical fiber probe, incident lights are transmitted inside the optical fiber probe which is provided with the metal nanometer particles for decoration, and the distance between the pinpoint and a sample adopts a light intensity control mode; and the pinpoint enhanced dark-field microscope is a localized surface plasmon resonance dark-field coupling device which utilizes the near-field coupling function of the nanometer metal particles at the pinpoint of the probe and a metal substrate material. The microscope can be used for researching basic surface and interface chemical problems such as a double-electric-layer structure of a substrate surface, adsorption / desorption behaviors and multi-phase catalysis. In addition, based on the LSPR (Localized Surface Plasmon Resonance) distance sensitiveness principle, the pinpoint enhanced dark-field microscope can be applied to a three-probe horizontal sensor to perform self-adaptive leveling on a nanometer processing platform.

A device for non-contact transmission of electrical signals or energy between two parts mobile relative to each other comprising electromagnetic near-field coupler elements on the two parts, wherein the coupler elements on at least one part form a cascade circuit terminated in a manner substantially free from reflection, and each coupler element is an independent resonance system having a resonance frequency higher than a highest frequency of wide-band signals to be transmitted. An alternatively structured device in which each coupler element on one part includes an element that resonates independently and has a resonance frequency approximately equal to the frequency of signals or energy to be transmitted including developments in which the coupler elements operate on differential signals, or analyzer means determine the spacing between the two parts, or at least one part comprises symmetrical lines for supplying differential energy signals to two coupler elements.

The invention relates to a wave beam regulating and controlling device which comprises a metal layer and a medium layer. The wave beam regulating and controlling device is characterized in that the thickness of the metal layer is smaller than one third of an operating wavelength, the thickness of the medium layer is smaller than a half of the operating wavelength, the total thickness of the metal layer and the medium layer which are alternately stacked is not more than two wavelengths, and the metal layer is provided with super cells which comprise a plurality of metal resonant units. The metal resonant units are utilized to regulate and control phases, consequentially, regulation and controlling of wave beams are achieved, and therefore the wave beam regulating and controlling device is ultra-thin in thickness. Phase control which is wide in frequency band and high in efficiency is generated by using a locally resonant mode of a multilayer metal structure through near-field coupling, and consequentially efficient regulation and controlling over the wave beams is achieved. The electromagnetic wave beams are regulated and controlled by using a plane structure, preparation is simple, price is low, and therefore high economic benefits are possessed.

The invention discloses a method and a device for testing a radio frequency index and a wireless index of an active antenna system. A probe-type test hood based on a near field coupling mode is adopted to test the radio frequency index of the tested active antenna system. The method comprises test hood single body calibration, test hood environment calibration, radio frequency index test, putting the tested active antenna system into the test hood, wherein the test environment is the same as the calibration environment, and carrying out radio frequency test on the tested active antenna system through a radio frequency port of a test probe after compensating the test environment according to the calibrated calibration result. The invention provides the comprehensive testing method at the same time. A space radio frequency (OTA) test is respectively adopted to test spatial characteristic of the active antenna system; and the near field coupling mode is adopted to test the radio frequency index of the active antenna system. The advantages of two testing methods are fully combined, and the defects and problems of the two testing methods are overcome and solved, thereby optimizing the test efficiency and the test cost.

The invention provides a whispering gallery mode photonic device and a preparation method thereof. According to the preparation method of a micro ring array structure, solvent droplets are utilized to dissolve a polymer film, so that a "coffee ring effect" can be generated, and therefore, polymer can be accumulated at the periphery of liquid so as to form an annular structure of which the height is obviously different from the height of the film, and conduction and confinement of light in the polymer structure can be realized; and light signals are inputted to the micron ring structure through utilizing excitation, scattering or near field coupling modes, so that a resonance effect in a whispering gallery mode can be realized. The prepared micron ring structure can be adopted as a high-quality factor optical micro cavity, so that a modulation-mode spectrum can be obtained, the width of spectral lines of the spectrum being significantly narrowed; a whispering gallery-mode light amplification stimulated emission can be realized through optical gain; and in a multi-ring coupled array structure, light signal processing and high sensitive response to outside stimuli can be realized according to the wavelength change information of the modulated spectrum and laser modes.

A sensor for detecting the presence of a target analyte, ligand or molecule in a test fluid, comprises a light transmissive substrate, an array of surface plasmon resonant (SPR) elements mounted thereon, a light source arranged to direct light into the SPR elements, and a detector arranged to detect light transmitted through the SPR elements. The SPR elements may include a dielectric polystyrene sphere having a spherical diameter of about 770 nm with a gold coating layer about 150 nm thick. The interface between the SPR elements and the substrate forms a pinhole with a diameter less than the wavelength of the light directed into the elements to produce a near-field coupling mode within the micro-sized SPR elements. In specific embodiments, the pinhole diameter ranges between 150-200 nm. The SPR elements are contained within a molded PDMS chip that may incorporate micro-fluidic components, such as a pump and valves, to control flow of the test fluid across the SPR elements. A multi-channel sensor may be provided for detecting the presence of several targets with a single micro-chip sensor. In the multi-channel sensor collections of SPR elements are commonly functionalized to one of the several targets. The detectors sense changes in the resonant response of the SPR elements indicative of binding with the targets.

The invention discloses a subwavelength plasmonic microcavity light coupling structure for promoting photoelectric detector response rate. The propagation direction and optical field distribution of incident light are modulated through a plasmonic microcavity, thus the incident light is limited to be propagate in the microcavity, the light escape is reduced, and the utilization rate of photons is raised. The incident light is focused in the microcavity such that the intensity is greatly enhanced, and a photoelectric detector with a high response rate can be formed through clamping photoelectric conversion material in the microcavity. The coupling structure is formed by a metal grating layer formed by upper layer periodic metal bars, a photoelectric conversion activation layer and a lower layer metal reflective layer. The subwavelength plasmonic microcavity light coupling structure has the advantages that by using the mode selection effect of an electromagnetic wave near field coupling microcavity formed by plasmonic resonance between the upper layer metal grating and the lower layer metal reflective layer, thus the photons in the microcavity are propagated along a transverse direction to form standing wave, the light field energy is gathered and the length of equivalent optical absorption is increased, and the response rate of the detector is greatly raised.

The invention discloses a high-linearity degree-of-polarization quantum-well infrared detector with a plasmon micro-cavity coupled structure. The detector is composed of an upper metal grating layer, a quantum-well infrared photovoltaic conversion activating layer and a lower metal reflecting layer, wherein the upper metal grating layer is formed by metal strips. The detector has the advantages that under the mode selection effect of an electromagnetic wave near-field coupled micro cavity formed by plasmon resonance between the upper metal grating layer and the lower metal reflecting layer, photons capable of entering the micro cavity are mainly photons capable of achieving resonance with a detected wavelength polarization mode; the direction of electric vectors of the photons entering the micro cavity is changed to the z direction from the x direction by being modulated in a micro-cavity mode, and the photons can be absorbed by quantum-well sub-bands in a transition mode to achieve the photovoltaic conversion process. With the advantages, the polarization coupled structure can greatly improve the extinction ratio of polarization responses, and extremely-high polarization distinguishing capacity of the detector is achieved.

A near-field coupler for a RFID system is provided. The coupler is configured to selectively communicate with a targeted transponder from among a group of multiple adjacent transponders. The coupler includes a conductive strip terminated by a load. The load is for matching an input impedance of the coupler to a source impedance of a transceiver. The conductive strip is based on a quarter wavelength of the center operating frequency. The conductive strip may have a substantially constant width and a length substantially equal to the quarter wavelength. Or the conductive strip may have a variable width defining a tapered profile and a length less than the quarter wavelength. The tapered profile may be an exponential profile or a Klopfenstein profile. Due to the overall size of the coupler to a typical transponder, the center of the coupler and the center of the transponder may be offset during coupling.

Systems and methods for non-contact and / or wireless transmission of power and / or data between and / or within electronic devices. These systems and methods may include the use of two or more wireless power modules to transmit a wireless power signal between a first electronic device and a second electronic device and / or the use of two or more wireless data modules to transmit a wireless data signal between the first electronic device and the second electronic device. The wireless power modules and / or the wireless data modules may include one or more near-field coupling devices. The wireless power modules and / or wireless data modules associated with the first electronic device may be arranged in complementary locations to the wireless power modules and / or wireless data modules associated with the second electronic device and the complementary modules may be separated by a distance of less than 10 um.

Discontinuous loop antennas and related components, radio-frequency identification (RFID), tags, systems, and methods are disclosed. A discontinuous loop antenna is an antenna loop structure that includes a discontinuity portion. The discontinuous loop antenna can be coupled to an RFID chip to provide an RFID tag. The discontinuity portion decreases the loop inductance and tag capacitance, thus enabling the discontinuous loop antenna to have significantly larger loop area while still matching the chip impedance, resulting in dramatic increases in near-field sensitivity. Increased near-field sensitivity provides increased power harvesting efficiency during near-field coupling. As one non-limiting example, an RFID tag having a discontinuous loop antenna may achieve significantly more power harvesting from a RF signal than an RFID tag having a continuous loop antenna tuned to the same or similar resonant frequency. The discontinuity portion can be trimmed after fabrication allowing the resonant frequency of the RFID tag to be tuned.

The invention relates to a near-field antenna. The near-field antenna comprises a metal box body, a first dielectric substrate, a near-field coupling coil, an input end and a second dielectric substrate. The metal box body is used for shielding outside electromagnetic interference and comprises a tabulate base board and a cover body fixed to the base board, and an opening exactly facing the base board is formed in the cover body. The first dielectric substrate, the near-field coupling coil and the input end used for inputting radio-frequency signals into the near-field coupling coil are contained in the metal box body, and the first dielectric substrate is placed to be adjacent to the opening. The second dielectric substrate is fixedly arranged in the metal box body and on the base board, the second dielectric substrate, the first dielectric substrate and the base board are parallel to each other, and a metal paster array is arranged on the upper surface of the second dielectric substrate. The near-field antenna has the advantages of enhancing the magnetic field strength within a near-field range and reducing the thickness of the near-field antenna.

The invention provides a TSV or TGV pinboard, 3D packaging and a manufacture method of the TSV or TGV pinboard and a manufacture method of the 3D packaging. A TSV or TGV pinboard with an EBG shielding structure comprises a TSV or TGV pinboard body and the EBG shielding structure. The EBG shielding structure is manufactured in the TSV or TGV pinboard, or manufactured on two sides of the TSV or TGV pinboard. The EBG shielding structure comprises an insulating layer and at least two metal planes, wherein, periodic EBG structures are etched in at least one metal plane, and the insulating layer is arranged between the metal planes. The invention further provides a manufacture method of the TSV or TGV pinboard and a manufacture method of the 3D packaging. The TSV or TGV pinboard, the 3D packaging and the manufacture method of the TSV or TGV pinboard and the manufacture method of the 3D packaging can effectively reduce the near field coupling problem among chips in perpendicular 3D interconnection packaging.

The invention discloses a subwavelength plasmon polarization converter which comprises an incident polarizer and an emission polarizer which are separated by a medium or air layer. Both the incident polarizer and the emission polarizer are made of plasmon materials, small holes with subwavelength dimensions are engraved on the two polarizers, an included angle is formed between each small hole on the incident polarizer and the corresponding small hole on the emission polarizer, and the end points of the above two small holes are in intersection. When the included angle of two small holes is less than 90 degrees, the incident polarizer only allows the coupling entering of one polarized electromagnetic wave, and the emission polarizer only allows the emission of an electromagnetic wave which is orthogonal with the above polarized direction. By using a near field coupling effect between orthogonal rectangular holes, according to the system, the limitation of the Malus law can be broken, and thus the electromagnetic wave generates effective transmission and the polarization direction is rotated for 90 degrees. The converter can be used as a single-direction transmitter, a subwavelength switch and a modulator.

Electronic devices may be provided with antennas. The antennas may include conductive antenna cavities. Antenna resonating elements may be mounted in the antenna cavities to form cavity antennas. An antenna cavity may be formed from metal structures with curved edges that define a curved cavity opening. A flexible printed circuit substrate may be coated with a layer of metal. Slot antenna structures such as a directly fed antenna slot and a parasitic antenna slot may be formed from openings in the metal layer. The flexible printed circuit substrate may be flexed so that the antenna resonating element forms a non-planar curved shape that mates with the opening of the antenna cavity. A ring of solder may be used to electrically seal the edges of the cavity opening to the metal layer in the antenna resonating element. The curved opening may be aligned with curved housing walls in an electronic device.

The invention belongs to the technical field of the communication, specifically a Circular-polarized back-cavity waveguide slot array antenna realized near-field coupling polarizer. The antenna array is composed of two parts: the lower end is the linear-polarized back-cavity waveguide slot array with high gain and low section, and the upper end is a biparasitic corner-truncated patch polarizer; the corner-truncated patch polarizer is composed of two corner-truncated parasitic patches, each two patches are isolated by using a metal belt electrically connected with a metal through hole; the linear-polarized back-cavity waveguide slot array is composed of a coaxial interface, a feed waveguide network, a coupling slot, a resonant cavity, a radiation slot and a support column; a periodical metal prop integrally machined with lower end antenna is supported between the polarizer and the antenna array plane; the assembling is convenient, the structure is compact, the additional loss material is unnecessary to import, and the features of high gain and low loss of the original waveguide back-cavity antenna are maximally reserved; furthermore, the surface wave between a polarizer medium substrate and an air contact surface can be commonly inhibited, and the performance of the antenna is effectively improved.

The invention discloses a tyre-based novel electric-car in-drive wireless power supply system which comprises a plurality of energy receiving components mounted on wheels of a car and a plurality of energy emission systems laid under the traffic lane. The energy emission systems are arranged along the driving direction at intervals; the energy emission systems generate electromagnetic fields nearby the surface of the traffic lane, and the car wheels with the energy receiving components sense energy generated from the electromagnetic fields and provide power to a driving electric car. A near-field coupling mode is adopted, radiation effect is low, height of the chassis of the car is unaffected, applicability of the car is high, the tyre-based novel electric-car in-drive wireless power supply system can be used in urban traffic system like the electric cars and buses, energy conservation and environment protection are benefited.

The present invention relates to a lighting assembly (100), comprising at least one light source (402), a heat sink (102) for dissipating heat generated during operation of the at least one light source (402), a lamp foot for connecting the at least one light source to a power supply, a control unit for controlling the at least one light source, and a first antenna arrangement (204) connected to the control unit and being electrically insulated from the heat sink (102) and the lamp foot (104), wherein the heat sink (102) and the lamp foot (104) form a second antenna arrangement (108), and the first antenna arrangement (204) is arranged in close vicinity of the second antenna arrangement (108) for allowing near-field coupling of a radio frequency signal provided to control the at least one light source (402).

The invention discloses a surface plasmon excimer electrically-induced excitation source with a medium-metal near field coupling structure. The surface plasmon excimer electrically-induced excitation source comprises a substrate, semiconductor quantum well epitaxial layer, a metal layer and a coupling output structure. The semiconductor quantum well epitaxial layer is loaded on the surface of the substrate. The metal layer is loaded on the surface of the semiconductor quantum well epitaxial layer. The coupling output structure is located in the metal layer. The invention further discloses a manufacturing method of the surface plasmon excimer electrically-induced excitation source. The method includes the steps that the semiconductor quantum well epitaxial layer is grown on the substrate; a device unit is etched on the grown semiconductor quantum well epitaxial layer; the metal layer is deposited on the etched device unit; the coupling output structure is manufactured in the deposited metal layer. According to the surface plasmon excimer electrically-induced excitation source, the semiconductor quantum well material is adopted to serve as an active medium, based on the near field coupling principle, the quantum efficiency is high, the light emitting wavelength range is wide, the excitation efficiency is high, the manufacturing process is simple, integration is conducted conveniently, and the surface plasmon excimer electrically-induced excitation source and the manufacturing method have great research value and application prospects.