Methods and devices for recovering data from an amplitude-modulated signal
US11471109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2015 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Jul 9, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device may be configured for performing signal processing in impedance sensing applications, and more specifically, for recovering data from an amplitude-modulated signal. In one aspect, a device includes a sensing circuit operable to sense an amplitude-modulated signal having a carrier frequency. The device also includes a mixer operable to mix the amplitude-modulated signal with a mixing signal having a mixing frequency to provide a frequency-downshifted signal having an intermediate frequency less than the carrier frequency. The device also includes a filter operable to filter the frequency-downshifted signal to provide a filtered signal. The device further includes a sampler operable to undersample the filtered signal at an undersampling frequency to provide a digital signal, the digital signal being representative of a modulating signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.