A Signal Generator for MB-OFDM UWB System in 0.18 μm CMOS Process

Author

Tarng, Shih-Hao ; Tsai, Yu-Ching ; Shen, Yi-Shing ; Jou, Christina F.

Author_Institution

Nat. Chiao-Tung Univ., Hsinchu

fYear

2007

fDate

3-8 June 2007

Firstpage

2157

Lastpage

2160

Abstract

A signal generator for band group 1, 3, and 4 in MB-OFDM UWB system is demonstrated in 0.18 μm RF CMOS 1P6M process. It composes of a low phase noise and wide tuning range voltage-controlled oscillator (6.12˜9.15 GHz) by using a modified switched-capacitor-array. This generator also includes a frequency divider and a multiplexer. Based on the measurement, the circuit consumes 36.63 mW. The best measured phase noise is -115 dBc/Hz at 1 MHz offset, and the output power is -1 dBm. Compared with the recent published papers by using FOM, this work shows good noise performance and low power dissipation.

Keywords

CMOS integrated circuits; OFDM modulation; frequency dividers; microwave oscillators; multiplexing equipment; phase noise; radiofrequency integrated circuits; signal generators; switched capacitor networks; ultra wideband communication; voltage-controlled oscillators; CMOS process; MB-OFDM UWB system; frequency 1 MHz; frequency 6.12 GHz to 9.15 GHz; frequency divider; modified switched-capacitor-array; multiplexer; phase noise; power 36.63 mW; signal generator; size 0.18 μm; voltage-controlled oscillator; CMOS process; Circuit optimization; Multiplexing; Noise measurement; Phase noise; Power measurement; Radio frequency; Signal generators; Tuning; Voltage-controlled oscillators; MB-OFDM UWB; VCO; frequency divider; multiplexer;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium, 2007. IEEE/MTT-S International

Conference_Location

Honolulu, HI

ISSN

0149-645X

Print_ISBN

1-4244-0687-0

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2007.380352

Filename

4264298