Title :
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
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;
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
DOI :
10.1109/APMC.2007.4554685
