A tri-band MIMO transceiver for mobile WiMAX with an image rejection ratio tunable SSB mixer

Author

Oishi, K. ; Yamazaki, D. ; Hasegawa, N. ; Kobayashi, N. ; Kudo, M. ; Sasaki, T. ; Sakamoto, S. ; Yamaura, S.

Author_Institution

Fujitsu Labs. Ltd., Yokohama, Japan

fYear

2009

fDate

7-9 June 2009

Firstpage

277

Lastpage

280

Abstract

We fabricated a multiband transceiver for mobile WiMAX in 90-nm CMOS technology. It operates at three RF bands (2.3/2.5/3.5 GHz) with a large dynamic range. We adopted a double conversion receiver that can switch lower and upper local modes. An image rejection ratio (IRR) tunable single side-band (SSB) mixer was used to achieve over 50 dB IRR. The RCE for 2.5 GHz at -71.5 dBm input was -28.7 dB and maximum input level up to -20 dBm was achieved using variable gain LNAs and mixers. The transmitter had a dynamic range of over 56 dB.

Keywords

CMOS integrated circuits; MIMO communication; MMIC mixers; UHF integrated circuits; UHF mixers; WiMax; mobile radio; transceivers; CMOS technology; double conversion receiver; frequency 2.3 GHz; frequency 2.5 GHz; frequency 3.5 GHz; image rejection ratio; mobile WiMAX; single side-band mixer; size 90 mum; transmitter; triband MIMO transceiver; tunable SSB mixer; variable gain low noise amplifier; Amplitude modulation; CMOS technology; Dynamic range; Gain; Image converters; MIMO; Radio frequency; Switches; Transceivers; WiMAX; WiMAX; image rejection; mixer; multiband; receiver; transceiver;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009. IEEE

Conference_Location

Boston, MA

ISSN

1529-2517

Print_ISBN

978-1-4244-3377-3

Electronic_ISBN

1529-2517

Type

conf

DOI

10.1109/RFIC.2009.5135539

Filename

5135539