Title :
Three-way Doherty power amplifier with uneven power drive
Author :
Hai-lei, Suo ; Jing-fu, Bao
Author_Institution :
Inst. of Electron. Syst. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
The basic operation principle of the three-way Doherty power amplifier is described. For the experimental verification, a 2.14 GHz three-way Doherty power amplifier using LDMOS devices with a power ratio of 1:2:2 is implemented and tested using WCDMA signal. In the design, we assign more input power to the peaking2 and peaking1 power amplifiers, so the three-way Doherty power amplifier has an uneven power drive. The test data prove that, the three-way Doherty power amplifier with uneven power drive has higher efficiency than the classical two-way Doherty power amplifier when the input signal has a high peak-to-average power ratio.
Keywords :
MIS devices; UHF amplifiers; circuit testing; code division multiple access; power amplifiers; LDMOS devices; WCDMA signal; frequency 2.14 GHz; high peak-to-average power ratio; three-way Doherty power amplifier; uneven power drive; Costs; High power amplifiers; Linearity; Multiaccess communication; Operational amplifiers; Peak to average power ratio; Power amplifiers; Power engineering and energy; Systems engineering and theory; Testing; adjacent channel power ratio (ACPR); drain efficiency; three-way Doherty; uneven power drive;
Conference_Titel :
Communication Technology, 2008. ICCT 2008. 11th IEEE International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2250-0
Electronic_ISBN :
978-1-4244-2251-7
DOI :
10.1109/ICCT.2008.4716245
