Mobile communication transmitter capable of selectively activating amplifiers
US6215987A · kind A · utility
37Cited by
18References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1998 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Jun 5, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0416
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a transmitter mounted on a mobile station for communicating with a base station, a transmission power amplifying section is formed by a plurality of amplifiers, and a plurality of switch circuits are connected to the outputs of the amplifiers, respectively. A control circuit is connected to the amplifiers and the switch circuits, and activates at least one of the amplifiers and operates the switch circuits to serially connect the at least one amplifier in accordance with the distance between the mobile station and the base station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.