Title :
1 GHz Class E RF Power Amplifier For A Polar Transmitter
Author :
Hietakangas, Simo ; Rautio, Timo ; Rahkonen, Timo
Author_Institution :
Dept. of Electr. Eng. & Inf. Technol., Oulu Univ.
Abstract :
This paper describes advantages and peculiarities of class E power amplifier when used in a polar transmitter system. Basic principles about class E and information about different nonlinearities are given. Also, modifying transistor model to switch use is discussed briefly. A 1 GHz, 0.5 W class E power amplifier was implemented for a polar transmitter. Differences between transmitter systems are mentioned and measurements of a total transmitter system performance are presented
Keywords :
UHF power amplifiers; radio transmitters; 0.5 W; 1 GHz; class E RF power amplifier; polar transmitter; transistor model; Amplitude modulation; Envelope detectors; Power amplifiers; Power supplies; Power system restoration; Radio frequency; Radio transmitters; Radiofrequency amplifiers; Switches; Voltage;
Conference_Titel :
Norchip Conference, 2006. 24th
Conference_Location :
Linkoping
Print_ISBN :
1-4244-0772-9
DOI :
10.1109/NORCHP.2006.329232
