A highly-linear CMOS RF programmable-gain driver amplifier with a digital-step differential attenuator for RF transmitters

Author

Sunbo Shim ; Bonhoon Koo ; Songcheol Hong

Author_Institution

Dept. of Electr. Eng., KAIST, Daejeon, South Korea

fYear

2013

fDate

2-4 June 2013

Firstpage

455

Lastpage

458

Abstract

This paper presents a CMOS RF programmable-gain driver amplifier (RF PGDA) for wireless transmitters. Digital-step differential attenuators precede a programmable-gain amplifier in order to enhance the dynamic range and to save power consumption, especially at low gain region. The RF PGDA fabricated in 0.13-μm CMOS technology with a 1.2 V supply voltage achieves a dynamic range of 49 dB with a step error of less than 0.5 dB and highly-linearized output satisfying the WCDMA/LTE specifications.

Keywords

CMOS analogue integrated circuits; Long Term Evolution; attenuators; code division multiple access; power consumption; radio transmitters; radiofrequency amplifiers; RF PGDA; RF transmitter; WCDMA-LTE specification; digital-step differential attenuator; gain 49 dB; highly-linear CMOS RF programmable-gain driver amplifier; power consumption; size 0.13 mum; voltage 1.2 V; wireless transmitters; Attenuators; Dynamic range; Electronics packaging; Gain; Power demand; Power generation; Radio frequency; Digital-step attenuator; RF transmitter; long-term evolution (LTE); programmable-gain amplifier (PGA); variable-gain amplifier (VGA); wideband code division multiple access (WCDMA);

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium (RFIC), 2013 IEEE

Conference_Location

Seattle, WA

ISSN

1529-2517

Print_ISBN

978-1-4673-6059-3

Type

conf

DOI

10.1109/RFIC.2013.6569629

Filename

6569629