Title :
Power efficiency analysis of envelope elimination and restoration technique in different topologies
Author :
Alon, M. ; Singer, S. ; Spiegel, S.J.
Author_Institution :
Sch. of Electr. Eng., Tel Aviv Univ., Tel Aviv, Israel
Abstract :
Modern wireless communication transmit systems require power efficient and linear power amplifiers. This paper investigates different topologies of power processing systems applied to EDGE and WLAN systems, based on envelope elimination and restoration (EER). The analysis takes into account the power distribution of the signals, the the power dissipated at the source and the output power. By comparing the power processing systems, assuming the power amplifier as the load impedance, the most suitable topology is determined. The results indicate power efficiency above 50% and 32% for EDGE and WLAN systems respectively over a wide output power range.
Keywords :
power amplifiers; telecommunication network topology; wireless LAN; WLAN system; envelope elimination; linear power amplifier; network topology; power efficiency analysis; power processing system; restoration technique; wireless communication transmit system; Impedance; Power amplifiers; Power distribution; Power generation; Power system restoration; Signal analysis; Signal restoration; Topology; Wireless LAN; Wireless communication; EER; PAE; PAR;
Conference_Titel :
Electrical and Electronics Engineers in Israel, 2008. IEEEI 2008. IEEE 25th Convention of
Conference_Location :
Eilat
Print_ISBN :
978-1-4244-2481-8
Electronic_ISBN :
978-1-4244-2482-5
DOI :
10.1109/EEEI.2008.4736649
