Patent ID: 11901863
Assignee: STMICROELECTRONICS S.R.L.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. An integrated circuit (IC) device comprising:
a first oscillator circuit comprising:
a first transistor and a second transistor, wherein gate terminals of the first transistor and the second transistor are coupled to a first node;
a first coil coupled between a drain terminal of the first transistor and a drain terminal of the second transistor; and
a first capacitor coupled in parallel with the first coil;

a second oscillator circuit, wherein the second oscillator circuit has an identical structure as the first oscillator circuit, wherein a source terminal of the first transistor of the first oscillator circuit and a source terminal of the second transistor of the first oscillator circuit are coupled to a reference voltage node, wherein a source terminal of the first transistor of the second oscillator circuit and a source terminal of the second transistor of the second oscillator circuit are coupled to a center tap of the first coil of the first oscillator circuit, wherein a center tap of the first coil of the second oscillator circuit is coupled to a supply voltage node, wherein the first node of the first oscillator circuit is configured to be supplied with a first bias voltage, and the first node of the second oscillator circuit is configured to be supplied with a second bias voltage different from the first bias voltage;
a second capacitor coupled between the drain terminal of the first transistor of the first oscillator circuit and the drain terminal of the first transistor of the second oscillator circuit; and
a third capacitor coupled between the drain terminal of the second transistor of the first oscillator circuit and the drain terminal of the second transistor of the second oscillator circuit.