Patent ID: 8339210
Filing Date: 2012-12-25
Classification: H03B

Abstract:
1. An oscillator for use in generating a signal having a desired frequency in a frequency synthesizer, comprising: a first inductor element being electrically coupled from one end of a first capacitive element to a first voltage connection point; a second inductor element being electrically coupled from one end of a second capacitive element to a second voltage connection point; a third inductor element being electrically coupled from another end of the first capacitive element to the first voltage connection point; a fourth inductor element being electrically coupled from another end of the second capacitive element to the second voltage connection point; said first, second, third, and fourth inductor elements being configured such that a first conductive trace loop formed by the first and third inductor elements is interleaved with a second conductive trace loop formed by the second and fourth inductor elements such that said conductive trace loops are configured to operate in substantially a same magnetic field, wherein a first drive circuit is electrically coupled to the first and second inductor elements between the first and second capacitive elements such that the first and second inductor elements connect the first drive circuit to the first and second capacitive elements, respectively, so as to form a first resonance circuit with the first and second capacitive elements and a second drive circuit is electrically coupled to the third and fourth inductor elements between the first and second capacitive elements such that the third and fourth inductor elements connect the second drive circuit to the first and second capacitive elements, respectively, so as to form a second resonance circuit with the first and second capacitive elements, such that the first and second drive circuits are mutually configured to establish and maintain a unified oscillation in the first and second resonance circuits at the desired frequency.