Methods and apparatus for antenna signal limiter for radio frequency identification transponder
US10224757B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2016 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Jun 4, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0715
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In described examples, an apparatus includes: at least one resonant circuit for receiving a radio frequency signal; a rectifier coupled to the resonant circuit to output a first rectified signal with a constant level portion and a portion matching a first portion of the radio frequency signal, and to output a second rectified signal having a constant level portion and a portion that matches a second portion of the radio frequency signal; a first limiter circuit to limit a voltage of the first rectified signal to a predetermined maximum voltage level; a second limiter circuit to limit the voltage of the second rectified signal to the predetermined maximum voltage level; a third limiter circuit to limit a voltage of the first rectified signal to a predetermined minimum voltage level; and a fourth limiter circuit to limit the voltage of the second rectified signal to the predetermined minimum voltage level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.