Pre-conditional calibration for third order intermodulation distortion (IMD3) cancellation
US11764882B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2022 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Jun 13, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Embodiments of a calibration system for third order intermodulation distortion (IMD3) cancellation and a wireless apparatus are disclosed. In an embodiment, a calibration system for IMD3 cancellation includes a cancellation circuit for IMD3 cancellation between a first transmitter and a second transmitter, and a controller coupled to the cancellation circuit and configured to for each frequency channel of the first transmitter, perform a pre-conditional calibration of the cancellation circuit, after the pre-conditional calibration, determine a phase configuration for the cancellation circuit, and after the phase configuration for the cancellation circuit is determined, determine an attenuation configuration for the cancellation circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.