A NEW ENHANCED DIFFERENTIAL CMOS COLPITTS OSCILLATOR-Reference-Cited by-同舟云学术

A NEW ENHANCED DIFFERENTIAL CMOS COLPITTS OSCILLATOR

Published:2014-01 Issue:01 Volume:23 Page:1450003
ISSN:0218-1266
Container-title:Journal of Circuits, Systems and Computers
language:en
Short-container-title:J CIRCUIT SYST COMP

Author:

EBRAHIMI AMIR¹,YAGHMAEE POURIA¹

Affiliation:

1. School of Electrical and Electronic Engineering, The University of Adelaide, Adelaide, SA 5005, Australia

Abstract

This paper represents a new enhanced Colpitts oscillator, which is designed based on gm-boosting of a conventional Colpitts oscillator. The proposed topology increases the negative resistant and enhances the start-up difficulty of the conventional Colpitts oscillator. This enables the Colpitts oscillator to operate in low-power consumption. Moreover, the differential and balanced structure helps limit even-order harmonics and degrades the common mode noise effects in output. The proposed circuit is designed using 0.18 μm technology and is simulated under 1.8 V supply voltage in advanced design system (ADS). Simulations show the output phase noise of -140 dBc/Hz at 1 MHz offset frequency when the operating frequency is 1 GHz.

Publisher

World Scientific Pub Co Pte Lt

Subject

Electrical and Electronic Engineering,Hardware and Architecture,Electrical and Electronic Engineering,Hardware and Architecture

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0218126614500030

Reference6 articles.

1. A general theory of phase noise in electrical oscillators

2. A 475 mV, 4.9 GHz Enhanced Swing Differential Colpitts VCO With Phase Noise of -136 dBc/Hz at a 3 MHz Offset Frequency

3. Analytical equations for oscillation amplitude of MOS Colpitts oscillator

4. G/sub m/-boosted common-gate LNA and differential colpitts VCO/QVCO in 0.18-/spl mu/m CMOS

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