Variable phase shifter design for analog predistortion power amplifier linearization system

Author

Mikyung Cho ; Kenney, J.

Author_Institution

Dept. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

fYear

2013

fDate

7-9 April 2013

Firstpage

1

Lastpage

5

Abstract

This paper presents a variable phase shifter (VPS) designed and fabricated for an analog predistortion (APD) power amplifier (P A) linearization system. In this system, there are special demands on the VPS, which haven´t been typical concerns in conventional VPS design. In our study, we focused on developing a VPS customized for APD linearization systems. This VPS has been fabricated in IBM 5PAE 0.35-μm SiGe BiCMOS process, and its area is 0.594 x 0.240 mm². Measured results show that it has 90° of total phase control from 0.7 GHz to 2.7 GHz, and shows a phase control curve with error less than ±1° over a minimum 55.54° tuning range. Also, the maximum frequency of phase control signal that can be modulated on an RF signal is 115 MHz, enabling a correction bandwidth up to 115 MHz in APD linearization systems.

Keywords

BiCMOS analogue integrated circuits; Ge-Si alloys; UHF integrated circuits; UHF power amplifiers; phase shifters; APD PA linearization system; IBM 5PAE BiCMOS process; RF signal; SiGe; VPS design; analog predistortion power amplifier linearization system; frequency 0.7 GHz to 2.7 GHz; frequency 115 MHz; phase control curve; phase control signal; size 0.35 mum; variable phase shifter design; CMOS integrated circuits; OFDM; RF signals; Voltage control; APD; Analog predistortion; CMOS phase shifter; PA; VPS; linearization; power amplifier; variable phase shifter;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Microwave Technology Conference (WAMICON), 2013 IEEE 14th Annual

Conference_Location

Orlando, FL

Print_ISBN

978-1-4673-5536-0

Electronic_ISBN

978-1-4673-5535-3

Type

conf

DOI

10.1109/WAMICON.2013.6572739

Filename

6572739