MEMS-based frequency synthesizers with enhanced temperature compensation
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United States of America Patent
Stats
-
Nov 5, 2013
Grant Date -
N/A
app pub date -
Jun 29, 2012
filing date -
Jun 29, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A frequency synthesizer is configured to generate a periodic output signal in response to a periodic input signal and a temperature-dependent frequency adjusting control signal. A temperature sensor is provided, which is configured to generate a temperature measurement signal in response to detecting a temperature of at least a portion of the frequency synthesizer. A control circuit is provided, which is configured to generate the temperature-dependent frequency adjusting control signal in response to the temperature measurement signal. This control circuit includes a cascaded arrangement of an oversampled data converter and a multi-stage digital filter, which is configured to generate a plurality of codes from respective ones of the digital filter stages, and a selection circuit, which is configured to use at least first and second ones of the plurality of codes in sequence during first and second consecutive time intervals to generate the temperature-dependent frequency adjusting control signal.
First Claim
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International Classification(s)
- 2012 Application Filing Year
- H03L Class
- 753 Applications Filed
- 526 Patents Issued To-Date
- 69.86 % Issued To-Date
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Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 5, 2025 |