An Enhanced 4.8-GHz Fully Integrated NMOS LC VCO for Wireless LAN Application

Author

Hu, Kangmin ; Yi, Xiaofeng ; Shen, Weilun ; Huang, Yumei ; Hong, Zhiliang

Author_Institution

State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai

fYear

2006

fDate

2006

Firstpage

1544

Lastpage

1546

Abstract

In this paper, a 4.8GHz fully integrated low power, low phase noise NMOS LC voltage-controlled oscillator (VCO) is presented. The tail resistor and low-pass filter of the bias current mirror are used to obtain good phase noise with little additional area. It is implemented in a 0.18 mum IP6M CMOS process. The chip consumes 4 mA from a 1.8 V supply and occupies an area of 0.85 times 0.95 mm². Experiment results show that its phase noise is -120dBc/Hz at 3MHz offset. And the tuning range is from 4.167-4.835GHz with the help of digital controlled capacitor array (DCCA). The phase noise optimum method of VCO is also described

Keywords

CMOS integrated circuits; current mirrors; low-pass filters; microwave oscillators; phase noise; voltage-controlled oscillators; wireless LAN; 0.18 micron; 1.8 V; 4 mA; 4.167 to 4.835 GHz; CMOS process; NMOS LC VCO; NMOS LC voltage-controlled oscillator; bias current mirror; digital controlled capacitor array; low phase noise voltage-controlled oscillator; low-pass filter; phase noise optimum method; tail resistor; wireless LAN; CMOS process; Low pass filters; MOS devices; Mirrors; Phase noise; Resistors; Tail; Tuning; Voltage-controlled oscillators; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology, 2006. ICSICT '06. 8th International Conference on

Conference_Location

Shanghai

Print_ISBN

1-4244-0160-7

Electronic_ISBN

1-4244-0161-5

Type

conf

DOI

10.1109/ICSICT.2006.306283

Filename

4098466