Patent ID: 9083319
Filing Date: 2015-07-14
Classification: H03B,H03K

Abstract:
1. An oscillator, comprising: an oscillation unit configured to receive a first current and to generate an oscillating signal according to the first current; a frequency-to-voltage converter comprising at least one switch and a current source, the frequency-to-voltage converter being configured to receive the oscillating signal, the frequency-to-voltage converter being configured to generate a converted voltage according to a varied frequency of the oscillating signal, the frequency-to-voltage converter comprising a controller configured to detect the oscillating signal and reduce the converted voltage while maintaining oscillation of the oscillating signal by enabling one of a plurality of combinations of current sources; and a voltage-to-current converter to receive the converted voltage and to generate the first current according to the converted voltage; wherein the voltage-to-current converter is configured to modulate the first current from a first value to a second value after the initiation of the oscillation unit, wherein the oscillation unit comprises an inverter with a transconductance within an oscillation range that enables oscillation, wherein the first value and the second value of the first current correspond to transconductance values within the oscillation range.