Invention Grant
US08810329B2 Temperature-stable LC oscillators and methods of oscillation at temperature null phase 有权
温度稳定的LC振荡器和温度无效的振荡方法

Temperature-stable LC oscillators and methods of oscillation at temperature null phase
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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