Integrated circuits and transponder circuitry with improved ask demodulation
US9762282B1 · kind B1 · utility
6Cited by
0References
20Claims
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Key dates
| Filing date | Mar 15, 2017 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Mar 15, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed examples include an RF transponder circuit with signal input nodes, a rectifier circuit with a power transistor and a current mirror circuit to generate a rectifier mirror current signal, a limiter circuit with a limiter transistor and a current mirror circuit to generate a limiter mirror current signal, and a demodulator circuit to demodulate an amplitude shift keying (ASK) RF signal received at the signal input nodes according to the rectifier and limiter mirror current signal to generate a binary demodulator data signal representing the presence or absence of a threshold amount of energy in the RF signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.