Pre-recorded sigma delta values for power amplifier control
US6097251A · kind A · utility
11Cited by
28References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1998 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | May 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/3015
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In order to increase the resolution of signals input to a power amplifier, this system includes a power control circuit which utilizes sigma delta modulated values which are stored in a memory device. These values, after retrieval from an addressable memory, are supplied only to a low pass filter before being sent to the control input of the power amplifier. The use of sigma delta modulated values can result in a reduction of hardware within the power control circuit of communication devices and increase the signal resolution by moving noise elements from the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.