Envelope detection
US12155406B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 5, 2022 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Jan 27, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1615
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an embodiment an envelope detection device includes an input terminal configured to receive an amplitude-modulated radio frequency signal, a first resistive element and a first MOS transistor connected in parallel between the input terminal and a first node configured to receive a reference potential, a first capacitive element connected between a gate of the first MOS transistor and the first node, an envelope detection circuit connected to the input terminal and configured to supply a voltage representative of an envelope of the amplitude-modulated signal and a circuit for controlling the first MOS transistor configured to supply a first current to the gate of the first MOS transistor only when the voltage is smaller than a first threshold and draw a second current from the gate of the first MOS transistor only when the voltage is higher than a second threshold, the second threshold being higher than the first threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.