Variable gain amplifiers for communication systems
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United States of America Patent
Stats
-
Apr 14, 2020
Grant Date -
Jul 4, 2019
app pub date -
Mar 6, 2019
filing date -
May 16, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention is directed to electrical circuits and techniques thereof. In various embodiments, the present invention provides a variable gain amplifier architecture that includes a continuous-time linear equalizer (CTLE) section and a variable gain amplifier (VGA) section. The CTLE section provides both a pair of equalized data signals and a common mode voltage. A DAC generates a control signal based on a control code. The VGA section amplifies the pair of equalized data signals by an amplification factor using a transistor whose resistance value is based on both the common mode voltage and the control signal. There are other embodiments as well.
First Claim
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International Classification(s)
- 2019 Application Filing Year
- H03F Class
- 1522 Applications Filed
- 1180 Patents Issued To-Date
- 77.53 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H03F Class
- 0 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 14, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 14, 2031 |
