Linearization methods of RF CMOS PAs for mobile communications

Author

Taehwan Joo ; Bonhoon Koo ; Kiyong Son ; Songcheol Hong

Author_Institution

KAIST, Daejeon, South Korea

fYear

2013

fDate

14-18 April 2013

Firstpage

1

Lastpage

4

Abstract

Although a CMOS device has inferior characteristics for PA it allows versatile controls and possible integrations with other circuits. These advantages surely provide us various methods to linearize a PA with resultant high efficiency. Several linearization methods of RF CMOS PAs are introduced in this paper. These are mostly based on adaptively controlling the biases of common source and common gate power transistors with the input envelope in many different manners. The other type effort is shown for a power driver linearizer which is made of a digital vector modulator. As examples, RF CMOS PAs for WCDMA and WLAN are demonstrated.

Keywords

CMOS analogue integrated circuits; adaptive control; code division multiple access; driver circuits; linearisation techniques; mobile radio; power MOSFET; power amplifiers; power integrated circuits; radiofrequency integrated circuits; telecommunication control; wireless LAN; RF CMOS PA; WCDMA; WLAN; adaptive control; common gate power transistor; common source power transistor; digital vector modulator; linearization method; mobile communication; power amplifier; power driver; CMOS integrated circuits; Linearity; Logic gates; Multiaccess communication; Power amplifiers; Power generation; Radio frequency; CMOS; WCDMA; linearization; power amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Symposium (IWS), 2013 IEEE International

Conference_Location

Beijing

Type

conf

DOI

10.1109/IEEE-IWS.2013.6616822

Filename

6616822