Spur cancellation system for modems
US10200070B2 · kind B2 · utility
0Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2017 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Jun 23, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0086
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A modem includes a modulator and a demodulator. The demodulator includes a direct current removing (DCR) circuit to transition between an acquisition mode, where the DCR circuit operates with a first loop gain; and a tracking mode, where the DCR circuit operates with a second loop gain. The second loop gain is smaller than the first loop gain, and the timing of the transition between the acquisition mode and tracking mode is programmable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.