Apparatus and method for shaping and power controlling a signal in a transmitter
US5697073A · kind A · utility
14Cited by
17References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1994 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Aug 26, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3047
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transmitter architecture is disclosed which offers a new combination of signal shaping and power control which optimizes transmitter noise figure performance. The disclosed apparatus and method is implemented by separating the shaping element (303) from the power control elements (406, 412, 418) in frequency. Placing the shaping element (303) at a fixed intermediate frequency (IF) allows for the use of readily available, temperature stable shaping elements while distributing the power control elements (406, 412, 418) at radio frequency (RF) facilitates optimization of noise figure performance in the transmitter (200).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.