Title :
Class-E PA efficiency enhancement using zero voltage switching contour control
Author :
Singhal, Niraj ; Shim, Seongbo ; Pamarti, Sudhakar
Author_Institution :
Wireless Div., Silicon Image, Sunnyvale, CA, USA
Abstract :
In this paper, we present a review of recently proposed zero-voltage-switching (ZVS) contour power amplifier (PA) architectures based on simultaneous duty-cycle modulation and load modulation. Fundamental principles to enhance power efficiency at back-off region are explained on the basis of class-E PA and their operations are verified using series/parallel versions of implementation. Outstanding issues with ZVS contour PA control are briefly discussed.
Keywords :
modulation; power amplifiers; zero voltage switching; class-E PA efficiency enhancement; duty-cycle modulation; load modulation; power amplifier; zero voltage switching contour control; Arrays; Degradation; Zero voltage switching; RF pulse-width modulation (RF-PWM); back-off; class-E amplifier; drain efficiency (DE); duty-cycle modulation; load modulation; switch-mode power amplifier (PA); zero-voltage-switching (ZVS);
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.2013.6572778
