Polar modulation transmission apparatus and transmission power control method
US7941109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2008 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Nov 15, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0416
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
As explained above, according to embodiments of the present invention, by providing averaging section 111 that detects an average power value of amplitude component signals, and controlling transmission power based on the amount of drift in the average output power value of PA 103 and the amount of drift in the average power value of amplitude component signals, when residual drift components are included in the average output power value of PA 103, the influence of residual drift components can be eliminated and transmission power can be controlled, so that it is possible to improve the accuracy of transmission power control. That is, deterioration of power estimation accuracy resulting from residual drift components can be reduced, so that it is possible to satisfy the restrictive requirement that the difference between transmission power be within, for example, the range of +/−0.5 dB.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.