Phase error analysis of the LC-Tank CMOS quadrature oscillators
نویسندگان
چکیده
منابع مشابه
A Time-Variant Analysis of the 1=f Phase Noise in CMOS Parallel LC-Tank Quadrature Oscillators
This paper presents a study of 1 2 phase noise in quadrature oscillators built by connecting two differential LC-tank oscillators in a parallel fashion. The analysis clearly demonstrates the necessity of adopting a time-variant theory of phase noise, where a more simplistic, time-invariant approach fails to explain numerical simulation results even at the qualitative level. Two topologies of 5-...
متن کاملAnalysis of Oscillation Amplitude and Phase Error in Multiphase LC Oscillators
Abstract This work proposes a novel method to find the phase error and oscillation amplitude in multiphase LC oscillators. A mathematical approach is used to find the relationship between every stage's output phase and its coupling factor. To much more general analysis, every stage assumed to have a different coupling factor. The mismatches in LC tanks are considered as the main source of pha...
متن کاملAnalysis and Design of Quadrature LC Oscillators
Single LC oscillators are known for their good phase noise performance. In this paper we analyse the effect of cross-coupling two LC oscillators in order to provide quadrature outputs, which are mandatory in modern transceiver architectures. We present a theoretical study that shows that due to coupling a frequency shift exists and the oscillator quality factor is reduced, leading to a poorer p...
متن کاملMore on the 1=f Phase Noise Performance of CMOS Differential-Pair LC-Tank Oscillators
This paper presents a rigorous phase noise analysis in the 1 f region for the differential CMOS LC-tank oscillator with both nMOS and pMOS switch pairs. A compact, closed-form phase noise equation is obtained, accounting for the noise contributions from both tank losses and transistors currents, which allows a robust comparison between LC oscillators built with either one or two switch pairs. T...
متن کاملPhase noise analysis in CMOS LC Quadrature VCO
Shuguang Han , Baoyong Chi and Zhihua Wang Department of Electronic Engineering, Tsinghua University, Beijing 100084, P. R. China Institute of Microelectronics, Tsinghua University, Beijing 100084, P. R. China 2 Abstract: Based on a physical understanding of phase noise mechanisms in CMOS LC Quadrature voltage-controlled oscillator (QVCO), a quantitative analysis of phase noise in QVCO is devel...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEICE Electronics Express
سال: 2011
ISSN: 1349-2543
DOI: 10.1587/elex.8.1933