Method for reducing phase noise in oscillators
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 11, 1992
Grant Date -
N/A
app pub date -
Jul 19, 1991
filing date -
Jul 19, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A simple and broadly applicable method for reducing phase noise in varactor tuned voltage-controlled oscillators (VCOs) is described. In particular, it is shown that by appropriately selecting the inductance of a choke inductor used to isolate the varactor from its DC bias supply, this inductor will also perform a noise filtering function by shunting off part of the internally generated low frequency random electronic noise through the DC supply, thus reducing a primary contributor of oscillator phase noise. Versions of this phase noise reduction method appropriate for the Colpitts, Hartley, and Clapp type LC voltage-controlled oscillator topologies are illustrated.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully