Apparatus and method for calibration of gain and/or phase imbalance and/or DC offset in a communication system
US7620373B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2006 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Jan 31, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio frequency transceiver for off-line transmit and receive calibrations includes: a transmit pre-distortion module configured to receive a transmit calibration signal during a transmit calibration mode, a transmit communication signal during a transmit communication operation mode, and one or more transmit calibration adjustment signals; a transmit channel frequency converter; and a transmit calibration module configured to provide the one or more transmit calibration adjustment signals and the transmit calibration signal to the transmit pre-distortion module. It may also include a receive channel frequency converter; a receive pre-distortion module configured to receive a receive calibration signal during the receive calibration mode, a receive communication signal during a receive communication operation mode, and one or more receive calibration adjustment signals; and a receive calibration module configured to provide the one or more receive calibration adjustment signals to the receive pre-distortion module and a receive calibration signal to the transmit pre-distortion module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.