Voltage-controlled oscillator with tunable tail harmonic filter
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Mar 11, 2025
Grant Date -
N/A
app pub date -
Oct 11, 2023
filing date -
Oct 11, 2023
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed is a voltage-controlled oscillator (VCO) including at least an inductor-capacitor (LC) resonant circuit (including varactors that receive a variable input voltage), cross-coupled transistors connected to the LC resonant circuit, and an LC filter connected to a shared source node of the cross-coupled transistors. The cross-coupled transistors can have back gates connected to receive a variable back gate bias voltage (Vbg), which is dependent on Vin to ensure that an optimal relationship between the oscillating frequency (ω0) of the LC resonant circuit and the resonant frequency (ω1) of the LC filter is continuously maintained to minimize phase noise. For example, if Vin is increased to increase varactor capacitance and, thereby decrease ω0, then Vbg is also increased, thereby increasing the voltage (Vs-s) and the capacitance (Cs-s) on the shared source node connected to the LC filter, decreasing ω1, and maintaining an optimal relationship of ω0=ω1/2.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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