Title :
Efficiency enhancement for base station application using Doherty Amplifier
Author :
Hamid, K.H. ; Al Kazzaz, S.A.
Author_Institution :
Coll. of Eng., Univ. of Mosul, Mosul, Iraq
Abstract :
Power amplifier is the main component of wireless communication system. This paper present efficiency improvement of linear Power amplifier for GSM base station using Doherty Power Amplifier (DPA). A DPA operating at 900 MHz and a supply voltage of (2.5-3)V. The DPA is a combination of a main amplifier (MA) biased to class AB mode and an auxiliary amplifier (AP) biased to class C mode. Each amplifier was design by GaAs FET using advance design system software (ADS). The simulation results show improvement in power added efficiency for DPA as compared with class AB power amplifier with acceptable power gain.
Keywords :
III-V semiconductors; UHF amplifiers; cellular radio; field effect transistors; gallium arsenide; power amplifiers; Doherty power amplifier; GSM base station; GaAs; GaAs FET; advance design system software; auxiliary amplifier; base station application; class AB mode; class C mode; efficiency enhancement; efficiency improvement; frequency 900 MHz; linear power amplifier; main amplifier; power added efficiency; voltage 2.5 V to 3 V; wireless communication system; Impedance; Impedance matching; Load modeling; Microwave amplifiers; Microwave circuits; Microwave integrated circuits; Power amplifiers; ADS software; Doherty Power Amplifier; Efficiency; GSM; GaAs FET;
Conference_Titel :
Telecommunications Forum (TELFOR), 2012 20th
Conference_Location :
Belgrade
Print_ISBN :
978-1-4673-2983-5
DOI :
10.1109/TELFOR.2012.6419371
