Method and apparatus for transmitter calibration
US7623886B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2005 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Mar 5, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/52
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus of calibrating a transmitter are disclosed. The method includes attenuating transmitter output signals as controlled by an output control signal, ensuring that an average power of the transmitter output signals is below a threshold level, and performing calibration of the transmitter at periods of time in which the output control signal is attenuating the transmitter output signals a lesser amount. The lesser amount can be less than an average of a minimum amount of attenuation and a maximum amount of attenuation. The apparatus includes a transmitter that includes a frequency up-converting LO mixer for frequency up-converting base band signals, generating transmitter output signals, a transmitter antenna for transmitting the transmitter output signals, and control circuitry for controlling attenuating the transmitter output signals during a calibration of the transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.