97 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.

The utility model discloses a passive RFID tag, an upper computer is connected with a reader-writer through a serial port line, the reader-writer is connected with a reader-writer antenna through a radio frequency line, the reader-writer antenna is in wireless communication with a tag antenna of the passive RFID tag through an air interface, the passive RFID tag comprises a plurality of RFID chips, each RFID chip comprises four pins, and the pins are connected with the reader-writer antenna. Wherein two pins are connected in parallel with a tag antenna, and the other two pins are connected with a pin which is connected with an external resistor to be measured. A conventional resistance measuring scheme needs a battery to supply power or a power line, and an RFID-based testing scheme does not need a power supply and can be used in places where wiring is inconvenient, such as an assembly line and a rotating scene. A conventional passive RFID tag cannot detect external analog quantity. The passive RFID tag of the utility model is connected with the pin through the pin, and is connected with an external resistor to be detected through the pin, so as to detect the external analog quantity.

The embodiment of the utility model provides an electronic tag and a communication facility. The electronic tag is used for being installed at a tag installation hole of an installation carrier, the electronic tag comprises a bearing nail head, an electronic tag chip and an electronic tag antenna which are packaged in the bearing nail head, and a nail column integrally connected with the bearing nail head, a plurality of barbs are arranged on the peripheral side of the nail column at intervals, and the barbs are connected with the bearing nail head. The barbs are used for being in interference fit with the hole wall of the label mounting hole. According to the technical scheme of the embodiment of the invention, the reliability and convenience of electronic tag installation can be 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.

1. The name of the design product: electronic tag antenna (RD240164A-A2#). 2. The use of the design product: used in the field of RFID electronic tag antenna, to realize the communication induction antenna function of product identification, asset management, logistics and warehousing, anti-fake and anti-smuggling, etc. 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.

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 a staggered inductive coupling feeding ultrahigh-frequency tag antenna attached to a metal surface, which belongs to the technical field of tag antennas and comprises a dielectric substrate, a conductive layer printed on the dielectric substrate and a tag IC (integrated circuit) chip arranged on the conductive layer. The conductive layer comprises a linear feed unit and a linear coupling unit; the linear feed unit comprises two mutually symmetrical horizontal feed strip lines and first vertical open-circuit stubs respectively arranged on the outer sides of the two horizontal feed strip lines; the tag IC chip is arranged at the central position of the inner side of the two horizontal feed strip lines; the linear coupling unit comprises two mutually symmetrical horizontal coupling strip lines, second vertical open-circuit stubs arranged on the inner sides of the two horizontal coupling strip lines respectively, two coupling broadband lines connected with the two horizontal coupling strip lines, and two rectangular defects etched in the coupling broadband lines respectively. The problems that the scheme is complex and the cost is high when an ultrahigh-frequency tag antenna overcomes a metal structure are solved.

The application provides a packaging optimization method for a super high frequency metal-resistant RFID tag antenna, and belongs to the technical field of RFID tag antenna packaging. The method comprises the following steps: firstly, a composite equation group containing antenna current distribution, input impedance, radiation characteristics and metal backboard effect is established, and analytical solution is carried out to obtain the parameter range of each geometric parameter, material characteristic and metal backboard influence. Then, a multi-objective optimization model considering packaging parameters is established, and the optimized packaging parameters are solved by using a genetic algorithm, with the read distance, bandwidth, gain, efficiency and other indexes as the targets. Finally, actual super high frequency metal-resistant RFID tag antenna packaging design and production are carried out according to the optimization results. The method can effectively balance the antenna performance and the metal resistance capacity, provides a systematic solution for the design and optimization of the super high frequency metal-resistant RFID tag antenna, and solves the technical problem that the prior art is difficult to be systematically optimized.

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.

The invention belongs to the field of antenna equipment, and discloses a tag antenna and a preparation method thereof. The tag antenna comprises a substrate and an antenna main body, the antenna main body is arranged on the substrate, and the material of the antenna main body comprises a graphene film. Wherein the material of the antenna main body comprises a graphene film; the graphene film has excellent chemical inertness and excellent conductivity, and can achieve the effects of liquid resistance, corrosion resistance and acid and alkali resistance.

An RFID system for tracking tagged items comprises an RFID reader and an RFID antenna coil arrangement in communication with the RFID reader. Each item has an RFID tag with a tag antenna coil and each item is positioned in a fixed location. The RFID antenna coil arrangement comprises a plurality of conductively connected antenna coils, wherein each antenna coil is oriented in a plane perpendicular to an orientation of the RFID tag antenna coil associated with the respective tagged item. Each antenna coil is also positioned to be aligned with the fixed location of a respective tagged item, so that the RFID tag antenna coil couples with a fringing flux produced by the antenna coil.

The application discloses a high flame-retardant B1 grade cable with intelligent induction, which comprises a core, a fire-resistant layer winding, a first flame-retardant filling layer, a metal armor, a second flame-retardant filling layer, an intelligent induction device, a third flame-retardant filling layer and a flame-retardant sheath arranged in sequence from inside to outside, wherein the intelligent induction device is uniformly arranged along the axial direction of the flame-retardant cable, the intelligent induction device is internally provided with an induction coil and a temperature sensing fuse connected with an induction chip, the induction chip is internally provided with information data corresponding to the axial position of the cable, the temperature value caused by the external heat of the cable at the core is judged through wireless communication of an RFID radio frequency electronic tag and a reader and a temperature sensing fuse of a tag coil, different resonant inductances and tag antenna circuits are arranged at the reader and the electronic tag, the generated resonant circuits are one-to-one corresponding, so that the fuse of which temperature grade is currently disconnected is judged, and thus the core temperature is obtained; the principle is simple and practical, implementation is convenient, and the safety and intelligence of the flame-retardant cable are greatly improved.

This invention relates to the field of RFID antenna system technology and discloses a planar RFID antenna, comprising a processor, a transceiver module, and an RFID tag module. The RFID tag module includes a second transceiver module, a first radiating module, and a signal integration module. The first transmitting module is used to output a radio frequency signal of a certain frequency to the RFID tag antenna via an RFID reader. The first radiating module is used to radiate the acquired radio frequency signal power in the form of electromagnetic waves. The conductors in the first radiating module are arranged with two conductors spread apart by 180°. A planar array of multi-radiating plates is provided in the first radiating module to spread the electric field in the surrounding space and enhance the radiation of electromagnetic waves. The antenna of this invention enhances and radiates the radio frequency signal, improves the received frequency ratio by using an attached enhancing antenna, and matches the antenna polarization function with the interrogation signal of the reader as much as possible.

The invention discloses electronic tag antenna manufacturing equipment of an ultraviolet curing digital ink-jet technology, which comprises a machine table, a base material unwinding roller assembly, a finished product winding roller assembly, a metal film unwinding roller assembly, a metal film waste discharge winding roller assembly and a positioning film unwinding assembly, a digital spraying assembly which is arranged on the upper side of the base material and used for spraying an antenna-shaped UV gilding glue layer is arranged on the machine table and located on the rear side of the base material unwinding roller assembly, and a UV curing lamp assembly used for curing the UV gilding glue layer is arranged on the machine table and located on the rear side of the digital spraying assembly. A metal film pressing assembly used for pressing a metal layer of a metal film on a UV gold stamping glue layer is arranged on the machine table and located on the rear side of the UV curing lamp assembly, a positioning film pressing assembly used for pressing a positioning film on a base material is arranged on the machine table and located on the rear side of the metal film pressing assembly, and the positioning film unwinding assembly is arranged at the position, close to the positioning film pressing assembly, of the machine table. And the function of online small-batch rapid switching production of antennas in different shapes is realized.

Antenna for use in an RFID tag, said antenna comprising a core, a metal wire or cable, and a protective sleeve, wherein said core comprises, and preferably consists of, textile made from elastomer or elastic materials having elasticity in a range of 5 to 50%, 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 comprises, and preferably consists of, textile made from polymer or organic materials.

An injection device (1) includes a reservoir unit (10) and a drive unit (20) releasably attachable to the reservoir unit. The reservoir unit (10) includes a reservoir (19), a reservoir holder (16) for holding the reservoir (19), a coupling member (17) and a machine-readable tag providing information and including a tag antenna (15). The drive unit (20) includes a drive source for dispensing the liquid drug, a counter coupling member (23) adapted to engage the coupling member (17) to attach the drive unit (20) to the reservoir unit (10) in a predefined rotational position and a code reader for reading the tag information and including a reader antenna (25). In an attached state, a center of the tag antenna (15) and a center of the reader antenna (25) are arranged to each other at an angle between 60° to 120° around the longitudinal axis.

A dual-band RFID tag antenna for mounting on a metallic object includes a dielectric substrate having first and second surfaces; a conductive layer on the first surface that is configured to be attached to a surface of the metallic object; an integrated circuit on the second surface; an antenna structure formed on the second surface that is configured to have a first resonance at a first frequency band and a second resonance at a second frequency band; a loop feed structure formed on the second surface that is configured to electromagnetically couple the antenna structure to the integrated circuit; first and second via pins passing through the dielectric substrate and electrically connecting a first point on the antenna structure with a corresponding first point on the conductive layer and a second point on the antenna structure with a corresponding second point on the conductive layer, respectively.

A carrier element is configured to receive a tag antenna and an IC chip of an RFID tag. The carrier element includes: a plurality of mounting grooves including a plurality of horizontal grooves and a plurality of vertical grooves for accommodating the tag antenna; and at least one accommodation space for accommodating the IC chip. The mounting grooves and the accommodation space collectively define a path of an effective resonance length of the tag antenna.

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.

The invention relates to an injection device (1) comprising a reservoir unit (10) and a drive unit (20) releasably attachable to the reservoir unit. The reservoir unit (10) comprises a reservoir (19), a reservoir holder (16) for holding the reservoir (19), a coupling member (17), and a machine-readable tag providing information and comprising a tag antenna (15). The drive unit (20) comprises a drive source for dispensing the liquid medicament, a mating coupling member (23) adapted to engage the coupling member (17) to attach the drive unit (20) to the reservoir unit (10) in a predetermined rotational position, and a code reader for reading tag information and comprising a reader antenna (25). In the attached state, the center of the tag antenna (15) and the center of the reader antenna (25) are arranged at an angle of between 60 DEG and 120 DEG from each other around the longitudinal axis.

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 application provides a passive coreless backscattering communication system and a communication method, the passive coreless backscattering communication system comprises a force-electric coupling sensor, a direct modulation circuit and a tag antenna which are connected in sequence, the force-electric coupling sensor is used for converting a mechanical signal into an analog voltage signal; the tag antenna is used for receiving a radio frequency detection signal transmitted by a reader-writer and transmitting a backscattering signal; wherein the backscattering signal carries a feedback radio frequency signal; the direct modulation circuit is used for generating the feedback radio frequency signal according to the analog voltage signal and the radio frequency detection signal. The passive coreless backscattering communication system and the communication method provided by the embodiment of the application improve the accuracy of collected data.