Method for reducing phase noise in oscillators

Details Method for reducing phase noise in oscillators Method for reducing phase noise in oscillators

1991-07-19

1992-08-11

Pascal, Robert J.

Oscillators

Solid state active element oscillator

Transistors

331175, H03B 500

Patent

active

051382857

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.

REFERENCES:
patent: 4621241 (1986-11-01), Kiser

Affiliated with

Also associated with

Rating

Method for reducing phase noise in oscillators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for reducing phase noise in oscillators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for reducing phase noise in oscillators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-349306