Title :
Efficiency enhancement of RF power amplifier using reconfigurable power dividers
Author :
Kim, Jung-Ho ; Jeong, Joonsoo
Author_Institution :
Dept. of Electron. Eng., Sogang Univ., Seoul, South Korea
Abstract :
A reconfigurable power divider is proposed using coupled lines and switches. It routes the input signal to one of two outputs with low insertion loss and good impedance matching. The proposed power divider is applied to a dual-mode power amplifier (PA). Measurement at 900 MHz shows that the efficiency of the PA can be greatly improved at low input powers thanks to the developed reconfigurable power dividers.
Keywords :
impedance matching; power amplifiers; power dividers; radiofrequency amplifiers; PA; RF power amplifier; coupled lines; dual-mode power amplifier; efficiency enhancement; impedance matching; input signal; insertion loss; reconfigurable power dividers; switches;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.2159
