RFID tag with bridge circuit assembly and methods of use
US6693541B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 19, 2001 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Apr 29, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49018
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Radio frequency identification tag devices with bridge circuit assemblies and methods for high-volume, low-cost production are disclosed. The bridge circuit assemblies and methods of the present invention can reduce the complexity of the RFID tag devices by providing a one-sided circuit design. The resonant frequency of the circuits formed on the devices may be tuned by severing selected connections to one or more tuning capacitor plates that form a part of the capacitor structure. Severing connections to the tuning capacitor plates changes the capacitance of the circuit that, in turn, changes the resonant frequency of the circuit. Further, the devices and methods of the present invention allow for the option of placing a die either on the antenna substrate or on the bridge circuit assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.