144 results about "Tag antenna" patented technology

The invention discloses a high-sensitivity metal micro-strain sensor label and a detection method thereof, which are applied to the field of nondestructive testing and the field of structural health monitoring. The problems that an existing tag antenna is low in strain detection sensitivity and difficult in micro-strain detection are solved. The high-sensitivity metal micro-strain RFID sensing tag is attached to the surface of a component, when the tag deforms, the impedance change of the tag is Zsened, and the radar cross section changes accordingly; the reader can remotely monitor antenna parameters according to the change of the RCS0, the RCS1 and the intensity while communicating with the tag, so that the change of the intensity RSSI of an echo signal is deduced, and the deformation of the tag is indirectly known; when the impedance of the tag antenna changes, the resonant frequency of the tag changes accordingly, and the deformation information of the tag can be indirectly obtained by analyzing the deviation of the resonant frequency.

The invention discloses a phase-free integrated sensing and backscatter communication method based on inverse scattering and a related device. According to the invention, the load impedance of the tag is dynamically modulated, so that a receiving antenna receives pilot signals in different modulation states to enhance backscattering; estimating a clutter tag structure combination power component and a tag antenna power component according to the RSSI of the collected pilot signal, thereby sensing and identifying a tag; and transmitting a data signal to a receiving antenna by adopting ASK modulation through the tag, collecting the received RSSI of the receiving antenna, and performing signal demodulation by utilizing a zero-forcing algorithm, thereby effectively enhancing the reliability of backscatter communication.

The invention discloses a synchronous perception and backscatter communication method and device based on spatial modulation and backscatter, and relates to the technical field of communication, and the method comprises the steps: transmitting a pilot signal to a label through a transmitting array, modulating the load impedance of the label, and then backscattering the signal to a receiving array; the receiving voltage generated by the receiving array and the original channel matrix are adopted to determine the reflectivity of the clutter tag and the reflectivity of the tag antenna; positioning and identifying the tag based on the reflectivity of the clutter tag; extracting a target channel matrix for constructing a tag from the original channel matrix according to the tag antenna reflectivity; performing spatial modulation on the information bits through a transmitting array, generating constellation symbols and determining an activation label; and backscattering the constellation symbols to the receiving array through the activation tag by adopting the transmitting array, and demodulating and decoding by combining the target channel matrix to output information bits. The backscatter label is accurately positioned and identified in a disordered environment, and spatial modulation is integrated into backscatter communication, so that the reliability of backscatter communication is improved.

1. Name of the Design Product: Ultra-High Frequency Electronic Tag Antenna (C40F). 2. Use of the Design Product: The design product is an ultra-high frequency electronic tag antenna, used in clothing, retail, and logistics. 3. Design Key Points of the Design Product: Lies in the combination of shape and pattern. 4. Picture or Photograph Most Indicating the Design Key Points: Front View. 5. The design product is a thin product, and the left view, right view, top view, and bottom view are omitted.

1. Name of the Design Product: Ultra High Frequency Electronic Tag Antenna (F7030T). 2. Use of the Design Product: The design product is an ultra high frequency electronic tag antenna for asset management. 3. Design Key Points of the Design Product: The combination of shape and pattern. 4. Picture or Photograph that Best Illustrates the Design Key Points: Front View. 5. The design product is a thin product, and the left view, right view, top view and bottom view are omitted.

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 invention discloses a frequency reconfigurable RFID tag antenna, and relates to the technical field of frequency antenna design. Comprising an antenna layer, a dielectric layer, an air layer and a metal layer, the dielectric layer is arranged below the antenna layer, the air layer is arranged below the dielectric layer, and the metal layer is arranged below the air layer; the antenna layer is composed of a patch dipole upper arm, a patch dipole lower arm and a microchip, one end of the microchip is connected with the patch dipole upper arm, the other end of the microchip is connected with the patch dipole lower arm, the patch dipole upper arm comprises a first inverted-L-shaped microstrip line, a second inverted-L-shaped microstrip line, a third inverted-L-shaped microstrip line and a fourth inverted-L-shaped microstrip line, one end of the first inverted L-shaped microstrip line is electrically connected with the microchip, and the frequency reconfigurable RFID tag antenna is switched among three different frequency bands, so that the problem that the frequency of a traditional RFID tag antenna cannot be universally used between the countries is solved, and the frequency reconfigurable RFID tag antenna has the advantages of being reconfigurable in frequency, high in anti-interference capability, small in size and the like.

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. Name of the design product: Ultra-high frequency electronic tag antenna (C27M). 2. Use of the design product: The design product is an ultra-high frequency electronic tag antenna, used for clothing, retail, and logistics. 3. Design key points of the design product: lies in the combination of shape and pattern. 4. Picture or photo that best shows the design key points: Front view. 5. The design product is a thin product, and the left view, right view, top view, and bottom view are omitted.

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.

1. Name of the Design Product: Ultra High Frequency Electronic Tag Antenna (C50F). 2. Use of the Design Product: The design product is an ultra high frequency electronic tag antenna, used for clothing, retail, and logistics. 3. Design Key Points of the Design Product: Lies in the combination of shape and pattern. 4. Picture or Photograph that Best Illustrates the Design Key Points: Front View. 5. The design product is a thin product, and the left view, right view, top view, and bottom view are omitted.

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 relates to the technical field of emergency rescue, in particular to an RFID rescue system based on a Longbou lens antenna. The system comprises a read-write subsystem, a ground control system, an unmanned aerial vehicle and a passive radio frequency tag connected with a tag antenna, wherein the read-write subsystem comprises a luneberg lens antenna and a LoRa communication module which are respectively connected with a reader-writer module; and the read-write subsystem is arranged on the unmanned aerial vehicle, and the luneberg lens antenna is located 5-15 meters below the unmanned aerial vehicle. According to the invention, the transmission effect of the rescue signal is obviously improved, the rescue delay caused by signal interruption or weak signals is reduced, the stability and reliability of the rescue signal are obviously improved, the maintenance cost and complexity of equipment are greatly reduced, and the rescue efficiency and accuracy can be effectively improved. The method is wide in application range, and the scene can be expanded to a high-altitude mountainous area where the road condition is complex, the number of obstacles is large, and GPS satellite positioning has a signal blind area; the method is especially suitable for rescue scenes in extreme environments such as high altitude and avalanche.

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.

The present invention discloses an integrated sensing and backscatter communication method and apparatus based on inverse scattering, relating to the field of wireless communication technologies. The method includes: determining a tag antenna mode pilot voltage component and a clutter tag structure combined pilot voltage component according to an open-circuit pilot received voltage and a short-circuit pilot received voltage generated by a receiving antenna based on a pilot signal; respectively determining a tag antenna mode reflection coefficient and a clutter tag structure combined reflection coefficient based on the tag antenna mode pilot voltage component and the clutter tag structure combined pilot voltage component by using a compressive sensing algorithm; transmitting a data signal to the receiving antenna by the tag using binary phase shift keying and collecting a data received voltage; and completing signal demodulation by using the data received voltage, the tag antenna mode reflection coefficient, and the combined reflection coefficient to obtain a bit mapping symbol of the data signal. By combining inverse scattering with modulating the tag impedance to implement backscatter communication, the performance of backscatter communication is improved.

1. Name of the Design Product: Ultra High Frequency Electronic Tag Antenna (C66F). 2. Use of the Design Product: The design product is an ultra high frequency electronic tag antenna, used for cold chain, retail, and logistics. 3. Design Key Points of the Design Product: Lies in the combination of shape and pattern. 4. Picture or Photograph that Best Illustrates the Design Key Points: Front View. 5. The design product is a thin product, and the left view, right view, top view, and bottom view are omitted.

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 invention provides a locking system for an electric locomotive and an overhead passenger device, and belongs to the technical field of mining equipment, the system comprises an electronic tag installed on the electric locomotive, and the electronic tag comprises an electronic tag antenna and an electronic tag assembly; the electronic tag assembly is connected with the electronic tag antenna; the card reader is used for reading the electronic tag, the card reader comprises a read-write module and a card reader antenna, the read-write module is used for communicating with the electronic tag, and the weight sensor is installed on a seat of the aerial passenger device; the emergency stop device is installed on a wheel disc of the overhead man-riding device and used for controlling operation of the wheel disc of the overhead man-riding device. The control host is connected with the emergency stop device, the weight sensor and a driving unit of the electric locomotive through the wireless communication base station. The locking control of the electric locomotive and the aerial passenger device in the roadway is realized, the two kinds of equipment cannot run in the roadway at the same time, the reliable isolation of personnel transportation and material transportation is realized, and the personnel safety is guaranteed.