Two-Tier Push-Pull RF Power Amplifier for Basestation Applications

Author

Patel, Dhruvit H. ; Elsharawy, Elbadawy A. ; Beishline, David W.

Author_Institution

Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ

fYear

2006

fDate

11-16 June 2006

Firstpage

1891

Lastpage

1894

Abstract

Radio frequency spectrum is expensive and sophisticated modulation techniques, leading to wide, dynamic signals require linear amplification. The penalty for achieving linearity is efficiency. The challenge is therefore to develop power amplifiers which offer high linearity and high efficiency in the back-off. In this paper, the idea of modified Doherty amplifier (Beishline, et al., 2004) is extended by using a push-pull class-B amplifier in place of class-AB amplifier and a complementary class-C amplifier in place of single ended class-C amplifier to improve linearity and to provide high efficiency in back-off

Keywords

amplification; linearisation techniques; power amplifiers; radiofrequency amplifiers; RF power amplifier; basestation applications; complementary class-C amplifier; linearity improvement; modified Doherty amplifier; push-pull class-B amplifier; two-tier push-pull amplifier; Broadband amplifiers; Chirp modulation; Energy consumption; High power amplifiers; Linearity; Multiaccess communication; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Voltage; power amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2006. IEEE MTT-S International

Conference_Location

San Francisco, CA

ISSN

0149-645X

Print_ISBN

0-7803-9541-7

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2006.249784

Filename

4015326