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Title:
TEMPERATURE-STABLE LC OSCILLATORS AND METHODS OF OSCILLATION AT TEMPERATURE NULL PHASE
Document Type and Number:
WIPO Patent Application WO/2014/025659
Kind Code:
A3
Abstract:
An LC oscillator tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The oscillator further includes frequency stabilizer circuitry coupled to the LC oscillator tank to cause the LC oscillator tank to operate at the temperature null phase. In one aspect of the disclosure, a feedback loop may split the output voltage of the LC tank into two voltages having different phases, where each voltage is independently transformed into a current through programmable transconductors, The two currents may be combined to form a resultant current which is then applied to the LC tank. The phase of the resultant current is such that the LC tank operates at an impedance condition that achieves frequency stability across temperature.

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Inventors:
SINOUSSI, Nabil, M. (Building No. 11 Spring Valley Compound, El-shorook, Cairo, EG)
HANAFI, Bassel (9450 Gilman Dr, La Jolla, CA, 92092, US)
Application Number:
US2013/053553
Publication Date:
July 09, 2015
Filing Date:
August 05, 2013
Export Citation:
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Assignee:
SI-WARE SYSTEMS (1100 Foothill Blvd, La Canada, CA, 91011, US)
International Classes:
H03L1/04
Foreign References:
US8072281B22011-12-06
US20100181845A12010-07-22
US20110298547A12011-12-08
US20050231297A12005-10-20
Other References:
See also references of EP 2883303A4
Attorney, Agent or Firm:
URE, Michael, J. (10518 Phil Place, Cupertino, CA, 95014, US)
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