Patent ID: 9667192
Date: 2017-05-30
CPC Classifications: H03B

Claim:
1. An oscillator, comprising: a first oscillator core including a first bias input node and further including a first output node and a second output node with a first planar inductor coupled between the first and second output nodes of the first oscillator core; a second oscillator core including a second bias input node and further including a third output node and a fourth output node with a second planar inductor coupled between the third and fourth output nodes of the second oscillator core; a first switch coupled between the first output node and the third output node; a second switch coupled between the second output node and the fourth output node; a bias control circuit having a bias output node; a third switch coupled between the bias output node and the first bias input node; and a fourth switch coupled between the bias output node and the second bias input node; wherein said first and second switches are selectively actuated to selectively connect the first and second oscillator cores in parallel to generate an output oscillation signal; and wherein said third and fourth switches are selectively actuated to selectively enable oscillation operation of the first and second oscillator cores, respectively.