51 results about "Tag antenna" patented technology

The application discloses a kind of based on space modulation and reverse scattering's synchronous sensing and reverse scattering communication method and device, it is related to communication technical field, including: through transmitting array to tag pilot signal and modulate the load impedance of tag again backscatter to receiving array;Using the receiving voltage generated by receiving array and original channel matrix determines clutter tag reflectivity and tag antenna reflectivity;Based on clutter tag reflectivity positioning and identification label;From original channel matrix, according to tag antenna reflectivity, extract and construct the target channel matrix of label;Information bits are spatially modulated by transmitting array, constellation symbol is generated and active label is determined;Using transmitting array, constellation symbol is backscattered to receiving array by active label, and combined with target channel matrix, demodulation and decoding output information bits.In the disorderly environment, reverse scattering label is accurately positioned and identified, and space modulation is integrated into reverse scattering communication, and the reliability of reverse scattering communication is improved.

1. The name of the design product: dual-frequency tag antenna. 2. The use of the design product: for receiving and sending wireless signals. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses a flexible graphene RFID ear tag antenna based on informatization animal husbandry management. The flexible graphene RFID ear tag antenna comprises a substrate, a tag antenna and a radio frequency identification chip, the tag antenna comprises a symmetrical annular dipole with double radiation arms bent inwards, a feed structure based on T-shaped matching and a complete circular ring located on the inner side. The tag antenna and the radio frequency identification chip are arranged on the substrate; the symmetrical annular dipole arms with the double radiation arms bent inwards comprise an outer layer ring and an inner layer ring, and the connecting line between the center point of the spacing distance between the symmetrical annular dipole arms with the double radiation arms bent inwards and the center point of the ring is a symmetrical line. The intersection point of the symmetric line and the outer layer ring is symmetrically provided with feed structures based on T-type matching along the symmetric line to form short circuit branches, and the intersection point serves as a feed port to be connected with the radio frequency identification chip. The device can be used for informatization livestock management, and has the characteristics of miniaturization, light weight, flexibility and corrosion resistance.

The utility model is suitable for the technical field of tool cabinets, and provides a tool cabinet system based on an RFID (Radio Frequency Identification) technology, which comprises a cabinet body, an antenna, a connecting line and an RFID card reader, the cabinet body is divided into an upper half part and a lower half part, the lower half part of the cabinet body is used for storing labeled articles, and RFID labels are attached to the side edges where the labeled articles are stored; antennae are arranged on the two sides in the lower half cabinet body; the connecting line is connected with the antenna and the RFID card reader; and the RFID card reader is arranged at the inner side of the lower half part cabinet body and is arranged at the rear. According to the utility model, the high-frequency RFID technology with the working frequency of 13.56 MHz is adopted, the RFID label has the capability of efficiently identifying label articles within 22 meters, generates a uniform read-write area to ensure stable identification, supports simultaneous reading of multiple labels, has a data write-in function to realize bidirectional transmission of information, and has a faster data transmission rate compared with a low-frequency RFID, the overall working efficiency is remarkably improved, and the cost is reduced. And global application and popularization are facilitated.

A method and system are directed to calibrating a radio frequency identification (RFID) printer, the method comprising retrieving frequency hopping capability from an RFID module coupled to the RFID printer, performing a plurality of calibration read and write operations to the calibration RFID label at a plurality of given positions using the RFID module based on a plurality of combinations comprising one or more field strengths, one or more sets of EPCC1G2 standard-based RFID parameters, and the frequency hopping capability, determining best one or more of a plurality of results associated with the plurality of calibration read and write operations, determining a tag antenna orientation of the calibration RFID label based on the plurality of results, and storing one or more optimal configuration settings in printer firmware of the RFID printer based on the tag orientation and the best one or more of the plurality of results.

This utility model belongs to the field of electronic tag technology and discloses an RFID electronic tag with an anti-tamper structure. It includes a brittle base, an antenna layer on the surface of the brittle base, a tag chip connected to the antenna layer, and multiple breakpoints with a width of 0.01m on the antenna layer. A top cover layer is provided on the surface of the antenna layer, and an adhesive layer for attaching to an object is provided at the bottom of the brittle base. The bottom of the top cover layer is coated with a fine and continuous conductive ink line to form a grid-like detection circuit. In this utility model, the detection circuit is weakly coupled to the antenna in the antenna layer, forming a parasitic capacitance. This causes a significant shift in the antenna's resonant frequency, preventing the energy emitted by the reader at its operating frequency from being effectively received by the tag antenna. This results in a sharp decrease in the tag's reading distance, or even complete unreadable data, thus achieving the anti-tamper function.

The application discloses a design method of a label antenna, which comprises sequentially arranging an upper radiation layer, a middle medium layer and a lower ground layer; at least one annular groove is formed on the upper radiation layer; an opening is formed on the annular groove to place a chip, and the annular groove is connected with the chip to form a first inductance loop; double ground columns are arranged below each annular groove between the upper radiation layer and the lower ground layer, and the double ground columns form a second inductance loop corresponding to the first inductance loop with the chip; the size of the annular groove is determined according to the capacitive reactance of a label antenna to be designed; the interval distance of the double ground columns is determined according to the inductive reactance of the label antenna to be designed; the size of the annular groove and the distance of the double ground columns are matched to achieve the best conjugate matching of the chip on each annular groove. The label antenna designed by the design method has the following advantages: first, the ground participates in radiation; second, the double inductance loops collect energy. The sensitivity of the label antenna is greatly improved by the double enhancement.

1. Name of the product in this design: Ultra-high frequency electronic tag antenna (SC-PH01). 2. Application of this design: for use in ultra-high frequency radio frequency electronic tags, especially suitable for electronic tags used in communication unit modules. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 front view. 5. This design is a thin product, so the right view, left view, top view, and bottom view of Design 1 are omitted; the rear view of Design 1 is the same as the front view of Design 1, so the rear view of Design 1 is omitted; this design is a thin product, so the right view, left view, top view, and bottom view of Design 2 are omitted; the rear view of Design 2 is the same as the front view of Design 2, so the rear view of Design 2 is omitted. 6. Design 1 is designated as the basic design.

A sensor system configured to provide an indication of a sensed parameter, the sensor system comprising: a reader comprising a reader antenna configured to transmit a carrier signal; a tag comprising: a tag antenna configured to receive the carrier signal; power harvesting circuitry coupled to the tag antenna and configured to produce an operating voltage from the receiver carrier signal; the voltage-controlled oscillator, VCO, circuitry coupled to the power harvesting circuitry and configured to receive the operating voltage therefrom, wherein the VCO circuitry comprises a VCO configured to generate an output signal having a frequency which varies based on the sensed parameter, and wherein the VCO circuitry is configured to modulate an impedance of the tag antenna according to a timing parameter selected based on the frequency of the output signal from the VCO; a controller coupled to the reader antenna and configured to: (i) identify an indication of the timing parameter of the impedance modulation of the tag antenna based on detected changes in the reader antenna impedance, and (ii) determine an indication of the sensed parameter based on the identified indication of the timing parameter.

The invention discloses an RFID electronic tag antenna laser proofing machine which comprises a machine case, when a rotating cylinder rotates, a shaft rod, a driving block and a moving block are driven to rotate, when the rotating cylinder stops rotating, three sliding cylinders face a proofing chamber, a feeding part and a receiving part respectively, and the other ends of the sliding cylinders are provided with negative pressure plates capable of exhausting air in a one-way mode; when the shaft rod, the driving block and the rotating cylinder rotate in the direction opposite to the rotating direction, the driving block drives the moving block and the negative pressure plate to move, the negative pressure plate facing the proofing chamber drives an adsorption base material to move into the proofing chamber, and the negative pressure plates facing the feeding part and the material receiving part conduct base material adsorption and base material discharging correspondingly. The problem that the efficiency is low due to the fact that base materials need to be replaced one by one in a traditional proofing mode is solved; through the unique structural design, feeding, proofing and material receiving are synchronously carried out, the negative pressure plate accurately completes all actions through the driving mechanism and the like, proofing is efficiently completed, and manual participation is not needed in the proofing process.

The invention discloses an integrated sensing and backscatter communication method and device based on phase-free extension Rytov approximation, and relates to the technical field of communication, and the method comprises the steps: generating a modulation signal through a transmitting antenna based on the load impedance of a dynamic modulation tag, and backscattering the modulation signal to a receiving antenna to measure an RSSI vector, determining an environment object tag structure power vector and a tag antenna power vector, and after sensing and identifying a tag according to the determined combined xRA relative dielectric constant comparison vector and the tag antenna xRA relative dielectric constant comparison vector, activating the tag through a transmitting antenna and transmitting communication data to a receiving antenna by adopting ASK (Amplitude Shift Keying) modulation; and demodulating by combining the environment object tag structure power vector, the tag antenna power vector and the RSSI vector corresponding to the communication data, and determining information bits. Sensing and backscatter communication are realized by adopting non-phase backscatter based on extended Rytov approximation, and backscatter communication which keeps stable is assisted on the whole.

This invention discloses a quasi-cavity, small-scale anti-metal UHF tag antenna in the field of radio frequency identification (RFID) technology, aiming to solve the problems of excessive size and volume in existing anti-metal UHF electronic tags. It includes a quasi-metallic cavity, which consists of a metal bottom surface and three metal side surfaces. An internal foam layer is provided, and a dielectric substrate is placed on the foam layer. A tag antenna pattern is printed on the upper surface of the dielectric substrate. The tag antenna pattern, from the outside in, includes an open conductor rectangular ring, two irregularly shaped multi-turn conductor rectangular rings, a lateral adjustment conductor strip, and a longitudinal adjustment conductor strip. The two irregularly shaped multi-turn conductor rectangular rings are symmetrically arranged, and a tag chip is connected to their central portion. This invention has a simple structure, reduces the size of the anti-metal UHF tag antenna, and has better radiation performance and easier impedance adjustment.

Systems and methods to selectively attach and control antennas via diodes. In one embodiment, a system includes: a reader having a plurality of reader antennas of different polarizations to transmit radio frequency signals; and at least one radio frequency device. The radio frequency device includes: a plurality of tag antennas of different polarizations; a plurality of diodes coupled to the plurality of tag antennas respectively; a receiver coupled to the plurality of diodes to receive the radio frequency signals from the tag antennas when the diodes are forward biased; and a set of one or more current controllers coupled to the plurality of diodes. In a receiving mode the controllers selectively forward bias the diodes to receive the signals from the reader. In a transmitting mode the controllers selectively change the state of the tag antennas to transmit data via backscattering the radio frequency signals.

The utility model relates to the technical field of PCB (printed circuit board) labels, and discloses a UHF (ultra high frequency) band anti-disassembly PCB label for a bank bag lock, which comprises a lock body used for locking a bank bag. The barb structure body is arranged on the lock body; the barb groove is formed in the lock body and is matched with the barb structure body; the PCB tag structure comprises a radiation layer which is used as a main radiation body of a tag antenna; and the anti-tamper inner loop antenna layer is nested on the inner side of the radiation layer, when the bank bag is illegally opened, the tag can be broken due to the design of a reverse anti-tamper V-shaped secant line, so that the anti-tamper inner loop antenna layer is broken, and the tag loses the read-write function, and due to the characteristic, the anti-tamper effect is effectively enhanced, and the illegal opening behavior can be found in time.

The utility model discloses a kind of antenna directional diagram reconfigurable RFID label, belong to radio frequency identification (RFID) technical field. Including RFID label ontology, middle is set to fold dipole antenna and label chip, left and right two sides are set to left and right passive dipole, there is phase-change radio frequency switch each in its upper and lower, passive dipole effective electric length is controlled by switch on-off, realize omnidirectional / directional antenna multiplexing structure. When all switches are off or on, it is omnidirectional antenna, left and right side switch different on-off state can make antenna directional radiation left or right. The utility model utilizes phase-change radio frequency switch, with low power consumption, fast response, directional diagram power-off memory and the like advantages, can flexibly switch antenna radiation direction, solve the low gain of RFID label antenna in prior art and the problem of high power consumption, poor flexibility in the process of reconfigurable antenna radiation direction adjustment.

Antenna for use in an RFID tag, said antenna having a core, a metal wire or cable, and a protective sleeve, wherein said core contains textile made from polymer or organic materials, said metal wire or cable is spiralled or helixed around said antenna core in Z or S direction to form a composite structure, and said protective sleeve is made by one or more wrapped layers around said composite structure, and said protective sleeve contains textile made from polymer or organic materials.

The utility model discloses a flexible anti-metal lighting tag antenna, which comprises a radiation part, a short circuit part and a grounding part, and is characterized in that the rear side of the radiation part is fixedly bonded with a flexible base material layer; the radiation part comprises a radiation area, a tuning branch knot and a light-emitting integration part. According to the utility model, integrated processing is carried out by adopting an aluminum etching process, so that the processing length and width of the tuning branch knot can be conveniently adjusted according to frequency band requirements of different regions, the real part and imaginary part of the impedance of the antenna can be adjusted, and the real part and imaginary part of the impedance of the antenna can be in conjugate matching with the impedance of a tag chip; in the aluminum etching process, the center frequency of the tag can be adjusted by adjusting the folded processing position of the short circuit part, so that the tag can be conveniently suitable for the local RFID frequency band requirement, and in addition, in the application, the visualization of the tag antenna in the working state is realized according to a preset logic lighting mode when the tag antenna is activated by electromagnetic induction; and people can conveniently and intuitively find the information.

The application relates to the technical field of wireless communication, in particular to a rolling type metal-resistant ultra-high frequency RFID tag antenna, which comprises cylindrical insulation support members arranged coaxially at two sides, a plurality of radiation arms are arranged at intervals along the circumferential direction of the insulation support members and tightly arranged at two ends of the two insulation support members respectively, a grounding arm is arranged between the two adjacent radiation arms, one end of the radiation arm and the grounding arm is connected with a short-circuit wall, a chip is arranged between the two insulation support members, a feeding surface and a grounding surface are connected with the chip through lead sheets at two ends of the chip, the feeding surface is connected with the radiation arm, the grounding surface is connected with the grounding arm, or the feeding surface is connected with the grounding arm, and the grounding surface is connected with the radiation arm. The frequency point offset of the RFID tag antenna when placed randomly is not more than the application frequency band, the RFID tag antenna has good directivity and is suitable for application in an Internet of Things intelligent identification system.

This invention relates to a method for producing a layered paper-based electronic tag antenna and the antenna itself, belonging to the field of antenna circuit manufacturing technology. The method includes: surface waterproofing: using paper as the antenna substrate, coating it with a waterproof and wetting agent; coating and drying the paper on both the upper and lower surfaces to form two waterproof layers, the thickness of which ranges from 1 to 10 micrometers; end-face waterproofing: forming a wax seal on all end faces of the paper layer by spraying; antenna material lamination: using aluminum-plastic composite adhesive, coating the paper material surface with the adhesive, drying the solvent with hot air, and then laminating with a metal foil, the thickness of which ranges from 10 to 35 micrometers; varnish printing: printing antenna lines on the antenna material surface using protective varnish; antenna etching; and finally, the antenna is produced using the above-described method for producing paper-based electronic tag antennas. This method offers energy-saving, environmentally friendly, stable quality, low cost, and fast and efficient production.

1. Name of the product in this design: Ultra-high frequency electronic tag antenna (R4713C). 2. Purpose of this design: For use in ultra-high frequency radio frequency electronic tags. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. This design is for a thin product, therefore the left view, right view, top view, and bottom view are omitted.

In one aspect, the invention is directed to a tire comprising a tread portion including one or more of tread blocks and tread ribs with an embedded electromagnetic identification tag. Moreover, the tire comprises a tag reader provided at an inner surface of the tire, adapted to wirelessly read the tag. In a second aspect, a tire comprises an NFC tag embedded in the tire's tread portion, and an NFC tag reader radially below the tread portion, which is adapted to wirelessly read the NFC tag. In a third aspect, a tire treadwear monitoring system comprises an electromagnetic identification tag in one of the tire's tread blocks and ribs, wherein a tag antenna and a tag reader antenna are essentially parallelly oriented, and both antennas include in a direction perpendicular to a radial direction of the tire a distance from each other of at most 2 cm.

A passive micro-RFID tag provides for increased read effectiveness due to an ionic encasement of the micro-RFID tag antenna. In various embodiments, the ionic encasement may comprise embedding, encapsulating, or coating the tag in a non-biological medium which exhibits conductive ionic properties. In embodiments, the micro-RFID tag having a maximum length dimension of 12 mm can be read with at least 90 percent effectiveness by a 30 dB RFID tag reader at least 48 cm away from the micro-RFID tag, thus providing a read-distance-to-size ratio of at least 4,000:1.

1. The name of the design product: RFID tag antenna (UY240037C). 2. The use of the design product: electronic tag for wireless radio frequency identification. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: front view. 5. The design product is a thin product, and the left view, right view, top view, and bottom view are omitted.

This invention relates to the field of radio frequency antenna technology and discloses an RFID tag antenna with a helical involute structure based on a flexible substrate. The antenna includes a flexible substrate and an antenna radiator disposed above the flexible substrate. The antenna radiator includes a loop antenna located at the center of the flexible substrate, used to cover the end of a cylinder. This RFID tag antenna with a helical involute structure based on a flexible substrate effectively solves the problem in the prior art where many identified objects have non-planar structures, and the demand for identifying cylindrical objects is increasing. Traditional planar antennas typically have a fixed planar radiation pattern. When attached to a cylinder, their radiated energy cannot simultaneously cover the end of the cylinder and the curved area of ​​its outer circumference, resulting in low identification success rate and blind spots when the reader approaches from a fixed direction.

The utility model discloses an embedded loop type RFID tag, and relates to the technical field of RFID tags. Comprising an antenna and a chip, and the chip is connected above the antenna through a conductive adhesive; the antenna is in a sheet shape, an opening is formed in the middle of the antenna, a connecting arm is arranged in the opening, a binding area is arranged in the middle of the connecting arm, and the binding area is used for being connected with a chip; a loop loop area is formed in the opening and located on the inner side of the connecting arm, and a radiation area is formed on the antenna and located on the outer side of the loop loop area. According to the utility model, during working, the tag antenna innovatively adopts a loop loop area embedded antenna design and a loop loop area overall embedded design, and the loop loop area is provided with different embedded depths, so that the far and near field frequency point adjustment and performance optimization of the tag can be realized.

The present application relates to the field of electronic tags, in particular to a high-frequency universal electronic tag antenna assembly and an electronic tag. The present application discloses a high-frequency universal electronic tag antenna assembly and an electronic tag, wherein the electronic tag antenna assembly comprises a substrate, a planar spiral antenna body, a plurality of chip pad assemblies and a plurality of communication units, the planar spiral antenna body and the plurality of chip pad assemblies are arranged on the front surface of the substrate, the plurality of communication units are arranged on the back surface of the substrate, the plurality of communication units correspond to the plurality of chip pad assemblies one by one, and are used for connecting the plurality of chip pad assemblies to different positions of the antenna body respectively, the communication units and the chip pad assemblies are insulated by the substrate and can be connected to each other through the perforations. The electronic tag antenna assembly of the present application can be compatible with a plurality of high-frequency tag chips, is simple to use, is convenient for production and management, has low cost, and has a simple structure and is easy to implement.

In one aspect, the invention relates to a tire comprising a tread portion comprising one or more tread blocks and a tread strip with embedded electromagnetic identification tags. Further, the tire includes a tag reader disposed at the inner surface of the tire, the tag reader adapted to wirelessly read the tag. In a second aspect, a tire includes an NFC tag embedded in a tread portion of the tire, and an NFC tag reader radially below the tread portion, the NFC tag reader adapted to wirelessly read the NFC tag. In a third aspect, a tire tread wear monitoring system includes an electromagnetic identification tag in one of tread blocks and ribs of a tire, where a tag antenna and a tag reader antenna are oriented substantially parallel, and the two antennas are at a distance from each other of at most 2 cm in a direction perpendicular to a radial direction of the tire.

The invention discloses a flexible wireless humidity respiration sensor based on ultrahigh frequency and a preparation method and application thereof. The preparation method comprises the following steps: providing a flexible tag antenna with an RFID chip; a first windowing mask plate is attached to the tag antenna, an aluminum layer at the windowing position of the first windowing mask plate is removed through mechanical scraping, and a second windowing mask plate is attached; a mixed solution of Ti < 3 > C < 2 > T < x > MXene and GO is dripped into the windowing holes of the second windowing mask plate and the first windowing mask plate, and after drying, the flexible wireless humidity respiration sensor based on the ultrahigh frequency is obtained. The MXene and GO mixed humidity-sensitive sensing material is adopted, the resistance change response capability is improved, and the sensitivity of the humidity respiration sensor is enhanced; meanwhile, the ultrahigh frequency tag antenna is adopted, and the purpose of long-distance wireless passive humidity-sensitive sensing is achieved.

The utility model provides a distributed passive sensing tag which can be applied to the technical field of sensing tag detection. The distributed passive sensing tag comprises a tag antenna used for receiving an electromagnetic wave signal sent by a controller and sending target sampling data acquired by a sensing module to the controller; the tag circuit is used for converting the electromagnetic wave signal into a target electric signal and supplying power to the sensing module by using the target electric signal so as to enable the sensing module to work normally; wherein the sensing module is arranged at a preset position corresponding to a to-be-measured target and is used for carrying out data acquisition on the to-be-measured target to obtain target sampling data; the distributed connection module is used for electrically connecting the tag circuit and the sensing module so as to supply power to the sensing module and enable data transmission between the tag circuit and the sensing module; wherein the tag antenna, the tag circuit and the distributed connection module can move in any direction relative to the sensing module.

The invention provides a flexible RFID tag antenna suitable for a non-good conductor, which belongs to the field of radio and comprises a flexible dielectric substrate, an annular radiation unit positioned on the flexible dielectric substrate and a radio frequency chip positioned on the annular radiation unit, the arched matching unit is bridged to the inner ring of the annular radiation unit and is radially symmetrical about the annular radiation unit, the arrow-shaped units are uniformly connected to the inner ring of the annular radiation unit, and each arrow-shaped unit points to the center of the annular radiation unit; the flexible requirement is met, the arched matching unit can reduce discontinuity of a traditional right-angle transition position and improve radiation efficiency and gain, and the arched matching unit is used for adjusting antenna impedance so as to make up resonant frequency deviation caused by a human body, achieve conjugate matching with a radio frequency chip and achieve long-distance reading. The arrow-shaped units form a slow wave structure, the electromagnetic wave propagation constant is increased, the phase velocity is reduced, meanwhile, the equivalent electrical length and the effective radiation area are increased, and miniaturization is achieved.