A new oscillator with ultra low phase noise and high output swing

Author

Bagheri, Mehdi ; Amirabadi, Amir ; Zokaei, Abolfazl ; Kamarei, Mahmoud ; Pour, Daniel Soleimani

Author_Institution

Univ. of Sci. & Technol., Tehran, Iran

fYear

2014

fDate

14-16 May 2014

Firstpage

1

Lastpage

4

Abstract

In this paper, a new voltage controlled oscillator (VCO) in a 0.18um CMOS process is proposed, which presents a high voltage swing and low phase noise. This new method offers better specifications with respect to traditional solutions which require higher current dissipation for increasing output voltage swing. The proposed circuit is capable of extra oscillation amplitude without increasing the current level taking advantages of tail current elimination and topology optimization. Simulation results at 2.5GHz with an offset frequency of 1MHz and 3MHz shows a phase noise of about -127.3dB/Hz and -137dBc/Hz, respectively with 1.4mA from 1.8V supply. Also, the Monte Carlo simulation results illustrate that the proposed circuit is very promising to process variations.

Keywords

CMOS analogue integrated circuits; Monte Carlo methods; circuit optimisation; integrated circuit design; integrated circuit noise; phase noise; voltage-controlled oscillators; CMOS process; Monte Carlo simulation; VCO; current 1.4 mA; current dissipation; frequency 2.5 GHz; oscillation amplitude; phase noise; size 0.18 mum; tail current elimination; topology optimization; voltage 1.8 V; voltage controlled oscillator; voltage swing; CMOS integrated circuits; Phase noise; Simulation; Transistors; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO), 2014 International Conference on

Conference_Location

Pavia

Type

conf

DOI

10.1109/NEMO.2014.6995685

Filename

6995685