Trimming method for a transceiver using two-point modulation
US6774738B2 · kind B2 · utility
8Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2003 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Jun 26, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a method for amplitude trimming in transceivers having a PLL circuit operating on the two-point modulation principle, the amplitude of an analog modulation signal is selected on the basis of a modulation shift of a defined digital modulation signal. A predetermined data sequence of the analog modulation signal is applied, the modulation shift of the analog modulation signal is determined, and the amplitude of the analog modulation signal is corrected to match the difference between the modulation shift of the digital modulation signal and the determined modulation shift of the analog modulation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.