Electronic precision timing device
AssigneeBAE Systems Information and Electronic Systems Integration Inc.
InventorGary L. Viviani
Life of this patent
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Abstract
A synthetic crystal oscillator enables a conventional crystal to be replaced with purely active electronic elements. Stability and performance characteristics are shown to be comparable-to-superior to a conventional crystal oscillator with side-by-side simulations. The synthetic crystal oscillator with purely active electronic elements offers cost, miniaturization and performance benefits. In some examples, the purely active electronic elements include an RLC circuit generate multiple stable concentric oscillations associated with nonlinear resonance used as an oscillator without a conventional crystalline structure coupled to the electrical circuit.
Claims13
An integrated circuit synthetic oscillator comprising:
- an electrical circuit comprising a current source defining a current controlled nonlinear circuit;
- wherein a plurality of stable oscillations are generated by the current controlled nonlinear circuit,
- wherein the stable oscillations have a nonlinear feedback,
- wherein the stable oscillations comprise a stable inner oscillation, a stable middle oscillation, and a stable outer oscillation, and
- wherein at least one of the stable oscillations is employed in a timing circuit for precision measurement in a digital device without a crystalline structure coupled to the electrical circuit.
A method comprising:
- creating a purely electronic oscillator having a complex nonlinear feedback based on a voltage or current in an integrated circuit;
- generating the complex nonlinear feedback in response to the voltage or current;
- generating at least three concentric stable oscillations or limit cycles based on the nonlinear feedback;
- connecting at least one of the stable oscillations or limit cycles to a timing circuit for precision time measurement in a digital device without any connection to a crystalline structure;
- and
- wherein the stable oscillations or limit cycles are based on the complex nonlinear feedback, wherein the complex nonlinear feedback is generated by a complex nonlinear equation that generates more than one limit cycle.
An integrated circuit synthetic oscillator comprising:
- an electrical circuit comprising a voltage source defining a voltage controlled nonlinear circuit;
- wherein a plurality of stable oscillations are generated by the voltage controlled nonlinear circuit,
- wherein the stable oscillations have a nonlinear feedback
- wherein the stable oscillations comprise a stable inner oscillation, a stable middle oscillation, and a stable outer oscillation;
- and
- wherein at least one of the stable oscillations is employed in a timing circuit for precision measurement in a digital device without a crystalline structure coupled to the electrical circuit.
Dependencies are inferred from the claim text.