Frequency Tuning Architecture for an OC192 Quadrature LC Voltage-Controlled Oscillator in 0.13um CMOS
Publication Date: 2004-Mar-25
The IP.com Prior Art Database
Disclosed is a method for the coarse and fine tuning of a quadrature LC voltage-controlled oscillator (VCO) using MOS switches in a differential configuration, along with fine tuning through the controlled coupling of two LC oscillators. Benefits include immunity to process induced variations, and multi-rate operation by allowing a large total tunable range.