Title :
A 900 MHz outphasing power amplifier
Author :
Zhou, Yijun ; Chia, Michael Yan-Wah ; Ang, Chiew Kok
Author_Institution :
Inst. for Infocomm Res., A*STAR, Singapore, Singapore
Abstract :
A novel 900 MHz outphasing power amplifier using LDMOS transistors has been developed. It uses a distributed active transformer for high efficiency impedance transformation and lossless power combining. The current mode class-D amplification technique is applied to amplify constant envelope and outphasing signals. The outphasing power amplifier has been tested with the wideband code division multiple access signal (WCDMA) and the 900 MHz continuous wave (CW) signal. The proposed design is suitable for fully integrated power amplification on silicon.
Keywords :
code division multiple access; power amplifiers; LDMOS transistor; continuous wave signal; current mode class D amplification technique; distributed active transformer; frequency 900 MHz; high efficiency impedance transformation; lossless power combining; outphasing power amplifier; outphasing signal; wideband code division multiple access signal; Impedance; Multiaccess communication; Power amplifiers; Power generation; Power transmission lines; Radio frequency; Transistors; Power amplifier; WCDMA; current mode class-D amplifier; outphasing; power combiner; transformer;
Conference_Titel :
Ultra-Wideband (ICUWB), 2010 IEEE International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-5305-4
Electronic_ISBN :
978-1-4244-5306-1
DOI :
10.1109/ICUWB.2010.5615555
