A dual-band series coupled quadrature LC-VCO for IMT-A and UWB systems

Author

Hu, Xinrong ; Huang, Fengyi ; Li, Tao ; Tang, Xusheng

Author_Institution

Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China

Volume

2

fYear

2010

fDate

20-23 Sept. 2010

Firstpage

1

Lastpage

4

Abstract

In this paper, a dual-band quadrature voltage controlled oscillator (QVCO) for 3.4-3.6 GHz IMT-A and 4.2-4.8 GHz UWB applications is presented. To accomplish dual-band operation, reconfigurable LC tank is adopted. Series coupling transistors are attached to generate quadrature phase signal with low phase noise and low power consumption. To improve phase noise performance, the current source is eliminated. The simulated phase noises at 1 MHz offset frequency are -120 dBc/Hz at 3.5 GHz and -118 dBc/Hz at 4.5 GHz, respectively. Designed in 0.13 μm process, the proposed QVCO core power dissipation is 11 mW from 1.2 V power supply.

Keywords

3G mobile communication; phase noise; ultra wideband communication; voltage-controlled oscillators; IMT-A; LC-VCO; UWB systems; dual-band operation; frequency 1 MHz; frequency 3.4 GHz to 3.6 GHz; frequency 4.2 GHz to 4.8 GHz; phase noises; power 11 mW; quadrature voltage controlled oscillator; series coupling transistors; size 0.13 mum; voltage 1.2 V; CMOS integrated circuits; Couplings; Dual band; Phase noise; Transistors; Tuning; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra-Wideband (ICUWB), 2010 IEEE International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-5305-4

Electronic_ISBN

978-1-4244-5306-1

Type

conf

DOI

10.1109/ICUWB.2010.5614703

Filename

5614703