Methods and devices generating a calibration signal for an IQ imbalance
US11088891B1 · kind B1 · utility
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20Claims
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Key dates
| Filing date | Mar 26, 2020 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Mar 26, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3818
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication circuitry device for correcting a phase imbalance, the communication circuitry device comprising one or more processors configured to estimate a non-linear component of a reference signal based on a measurement of a tone at a first harmonic of a plurality of harmonics of the reference signal, estimate an in-phase component of the reference signal based on subtracting the non-linear component from a measurement of a tone at a second harmonic of the plurality of harmonics of the reference signal, and generate a calibration signal based on the estimation of the in-phase component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.