Passive RFID tag
US12430532B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2022 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | May 9, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/22
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A passive radio frequency identification (RFID) tag, including: a carrier; metal antennas, respectively disposed in mirror symmetry on a first surface and a second surface of the carrier opposite to each other, wherein a part of the metal antenna on the first surface and another part of the metal antenna on the second surface are open-circuited at one end of the carrier and short-circuited at another end of the carrier; and a RF chip, embedded in the metal antenna for transmitting and receiving a radio signal in a UHF frequency band through the metal antenna, wherein the RF chip is bonded to a PCB module. The solution of the disclosure overcomes phenomenon of deterioration and peeling of a conductive medium forming a radio frequency radiation structure, and significantly improves reliability of the passive RFID tag used in exposure to a high temperature environment for a long time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.