Mobile telephone apparatus
US6865399B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2002 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Feb 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7221
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a mobile telephone apparatus corresponding to dual-band provided with an RF power module to operate in two kinds of different frequencies, a common harmonics control circuit is provided to the output circuit of such RF power module to realize higher efficiency in view of controlling respective harmonics power for both band frequencies. Moreover, a means for selectively setting the bias is also provided so that the maximum efficiency can be attained depending on the output power required with respective communication systems with the bias control signal output from the CPU of the control unit interlocking with selection of frequency of the mobile telephone apparatus body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.