High-efficient harmonic-tuned power amplifier with more than an octave bandwidth

Author

Zisheng Lu ; Wenhua Chen ; Ghannouchi, Fadhel M.

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

fYear

2013

fDate

7-9 April 2013

Firstpage

1

Lastpage

3

Abstract

A design approach of high-efficient power amplifiers with more than an octave bandwidth is proposed in this letter. The load-pull method is employed at both fundamental and harmonic frequencies, and the simplified real frequency technique (SRFT) algorithm is used to design and synthesize the PA matching networks. Experimental results show that the fabricated PA operates from 525 MHz to 1325MHz, with drain efficiency over 70% and output higher than 39dBm. Digital predistortion is applied to the PA and the adjacent channel power ratio (ACPR) is improved to more than -40 dBc.

Keywords

power amplifiers; ACPR; PA matching networks; SRFT algorithm; adjacent channel power ratio; design approach; digital predistortion; frequency 525 MHz to 1325 MHz; fundamental frequencies; harmonic frequencies; high-efficient harmonic-tuned power amplifier; load-pull method; octave bandwidth; simplified real frequency technique; Bandwidth; Testing; SRFT; broadband; high-efficient; power amplifiers;

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.2013.6572742

Filename

6572742