Title :
Analysis of increasing HFHPTA´s efficiency using composite signals
Author :
Kostic, Srdjan ; Milosevic, Vladimir
Author_Institution :
Oper. Div. RAC, Ericsson Syst. Expertise Ltd., Dublin, Ireland
Abstract :
The application of only precise drive and output composite signals with nearly flattened maximums provides the optimal operating conditions (increasing efficiency and output power) of high-frequency high-power tuned amplifiers (HFHPTAs). Under the specific conditions that are presented in this paper, the injection of two harmonics into a carrier signal can increase output power and efficiency.
Keywords :
HF amplifiers; circuit optimisation; circuit stability; harmonics; power amplifiers; radiofrequency amplifiers; HF tuned amplifier; carrier signal; efficiency; harmonics injection; high-frequency amplifier; high-power amplifier; optimal operating conditions; output composite signals; output power; power balance analysis; precise drive signals; radio transmitter; Circuits; Hafnium; High power amplifiers; Power amplifiers; Power generation; Power system harmonics; Radio frequency; Radio transmitters; Radiofrequency amplifiers; Signal analysis;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
DOI :
10.1109/TCSI.2003.816309
