Phase and Quadrature Pulsed Bias LC-CMOS VCO

• 作者: Adriano Carbone Fabrizio Palma Stefano Perticaroli
• 来源期刊: 电路与系统(英文)
• 学科: 数学
• 关键词: PHASE And QUADRATURE VCO Pulsed BIAS Oscillator FLOQUET EIGENVECTORS Noise Decomposition
• 年，卷（期）: 2011,（1）
• 页码范围: 18-24
• 页数: 7页
• 分类号: O1

摘要

Pulsed bias is an attempt to improve the performance of oscillators in integrated circuits as a result of architectural innovation. Given the relatively low value of resonator quality factor achievable on-chip, for a specified bias voltage level, pulsed bias may result in a lower power consumption and in an improvement of the spectral purity of the oscillation. The main drawback of this approach is the need to introduce a certain time delay in order to properly position pulses with respect to oscillation waveform. Delay accumulation requires further energy dissipation and introduce additional jitter. In this paper we present a new architecture capable to avoid unnecessary delay, based on the idea to apply the pulsed bias approach to a quadrature oscillator. A ?rst circuit-level implementation of this concept is presented with simulation results.