W-CDMA High Power Amplifier using Anti-Phase Intermodulation Distortion Linearization Technology

Author

Do, Ji-Hoon ; Kang, Won-Tae ; Jang, Jeong-Seok ; Hong, Ui-Seok

Author_Institution

Dept. of Radio Sci. & Eng., Kwangwoon Univ., Seoul

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

Abstract

This paper shows how the ACLR of power amplifier can be reduced by using Anti-phase IMD linearization technique which generate Anti-phase IMD in the driver stage compare to output stage´s IMD. Brief theory and design process are proposed. From the experimental result of 4-carriers W-CDMA input signal, this amplifier has ACLR -55 dBc@5 MHz offset at 44.7 dBm(30 watts) average output power. Compare to optimum matching technique to get maximum power gain, this technique has been improved ACLR by 12 dBc.

Keywords

adjacent channel interference; code division multiple access; intermodulation distortion; linearisation techniques; power amplifiers; wideband amplifiers; ACLR; W-CDMA; anti-phase IMD linearization technique; anti-phase intermodulation distortion linearization technology; optimum matching technique; power amplifier; Driver circuits; High power amplifiers; Intermodulation distortion; Linear circuits; Linearity; Multiaccess communication; Power amplifiers; Power generation; Process design; Voltage; Anti-phase; HPA; IMD; Linearization; WCDMA;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4554685

Filename

4554685