Method and apparatus for I/Q mismatch calibration of transmitter
US7298793B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2003 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Oct 10, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2626
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for I/Q mismatch calibration of a transmitter. First, a discrete-time signal is generated. Next, a corrected signal based on the discrete-time signal and a set of correction parameters Ap and Bp is obtained. Next, the corrected signal is converted to an analog corrected signal. Next, I/Q modulation is applied to the analog corrected signal and outputs a modulated signal. Next, a first, second, and third desired component measures and a first, second, and third image component measures with the first, second and third sets of the correction parameters Ap and Bp are respectively obtained from the modulated signal. Next, a fourth and fifth set of correction parameters Ap and Bp are obtained based on the first, the second, and the third desired component measures as well as the first, the second, and the third image component measures. Next, a fourth desired component measure and a fourth image component measure with the fourth set of correction parameters Ap and Bp and a fifth desired component measure and a fifth image component measure with the fifth set of correction parameters Ap and Bp are obtained from the modulated signal. Finally, a final set of the correction paramet…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.