Title :
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
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;
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
DOI :
10.1109/WAMICON.2013.6572742
