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3 results about "Chipless RFID" patented technology
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Chipless RFID tags are RFID tags that do not require a microchip in the transponder. RFIDs offer longer range and ability to be automated, unlike barcodes that require a human operator for interrogation. The main challenge to their adoption is the cost of RFIDs. The design and fabrication of ASICs needed for RFID are the major component of their cost, so removing ICs altogether can significantly reduce its cost. The major challenges in designing chipless RFID is data encoding and transmission.
A multi-patch chipless rfid metal crack antenna sensor
The application discloses a kind of multi-patch coreless RFID metal crack antenna sensor, it is related to metal crack detection technical field.The present application includes dielectric substrate and the multi-patch resonator arranged thereon, the multi-patch resonator includes center patch resonator, horizontally arranged one group of horizontal group circular patch resonator and vertically arranged one group of vertical group circular patch resonator, the horizontal group circular patch resonator and vertical group circular patch resonator are different in size, for generating independent resonant frequency, realize the multi-parameter detection to metal crack direction and width.The sensor of the present application is combined by cutting angle rectangular center patch and two groups of different size circular patches, effectively suppresses electromagnetic coupling between resonant units, ensures that each resonant point works independently, improves detection reliability.
Owner:JILIN COMM POLYTECHNIC
Chipless rfid metal crack sensing tag integrated with frequency band encoding and identification method
This invention discloses a chipless RFID metal crack sensing tag with integrated frequency band coding and its identification method. The tag patch unit is disposed on the upper surface of a dielectric substrate, and a metal base plate is disposed on the lower surface of the dielectric substrate. The tag patch unit includes a disc-shaped antenna and six arc-shaped patches. The disc-shaped antenna is located at the center of the dielectric substrate. The six arc-shaped patches are concentrically distributed in an arc shape with the center of the disc-shaped antenna as the common center, and are divided into two groups: the first group consists of four arc-shaped patches, evenly distributed circumferentially at the top, bottom, left, and right positions of the common center, equidistant from the center; the second group consists of two arc-shaped patches, distributed circumferentially at the top and bottom positions of the common center, equidistant from the center, and closer to the center than the arc-shaped patches in the first group, and do not contact the arc-shaped patches in the first group. This invention is low-cost, allows for wireless measurement, and can be deployed on a large scale.
Owner:CHINA RAILWAY TENTH BUREAU GRP ELECTRIC ENG CO LTD +1