Open AccessThe Peak Control Function and its Applications to Transmission Line Effects in Class D Amplifiers
Author(s) -
Dan Tudor Vuza,
Reinhold Frosch,
Helmut Koeberl,
Marian Vlădescu
Publication year - 2014
Publication title -
advances in electrical and computer engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 23
eISSN - 1844-7600
pISSN - 1582-7445
DOI - 10.4316/aece.2014.03002
Subject(s) - amplifier , function (biology) , computer science , transmission line , class (philosophy) , transistor array , line (geometry) , electronic engineering , telecommunications , engineering , mathematics , bandwidth (computing) , artificial intelligence , biology , geometry , evolutionary biology
Class D amplifiers find new applications in RFID systems, because of their high efficiency. Most textbooks describe the case of a load directly connected to the amplifier. However, in most RFID systems the usage of a transmission line is mandatory and this may introduce some novel effects, in the form of an infinite series of peaks in the system frequency response functions. If not appropriately taken care of, these effects may lead to electromagnetic compatibility problems. The purpose of the paper is to develop the theory of the peak control function, which is conceived as a tool that allows the designer to keep the magnitude of the peaks, and hence their influence on the system, into well defined limits