Title :
Design of energy efficient power amplifier for 4G user terminals
Author :
Hussaini, Abubakar Sadiq ; Abd-Alhameed, Raed ; Rodriguez, Jonathan
Author_Institution :
Sch. of Eng., Design & Technol., Univ. of Bradford, Bradford, UK
Abstract :
This paper describes the characterization and design of energy efficient user terminal transceiver power amplifier. To reduce the design of bulky external circuitry, the load modulation technique is employed. The design core is based on the combination of Class B and Class C that includes quarter wavelength transformer at the output to perform the load modulation. The handset transceiver for this power amplifier is designed to operate over the frequency range of 3.4 GHz to 3.6 GHz mobile WiMAX band. The performances of the load modulation amplifier are compared with conventional Class B amplifier. The results of 30 dBm output power and 53% power added efficiency are achieved.
Keywords :
4G mobile communication; WiMax; energy conservation; microwave power amplifiers; mobile radio; radio transceivers; transformers; 4G user terminal; class B amplifier; class C amplifier; energy efficient user terminal transceiver power amplifier design; frequency 3.4 GHz to 3.6 GHz; load modulation technique; mobile WiMAX band; quarter wavelength transformer; Modulation; Scattering parameters; Transistors; Class B; OFDM; load modulation RF power amplifier; mobile WiMAX;
Conference_Titel :
Electronics, Circuits, and Systems (ICECS), 2010 17th IEEE International Conference on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-8155-2
DOI :
10.1109/ICECS.2010.5724586
