Open AccessArbitrary load measurement circuit for adaptive impedance tuning circuit
Author(s) -
Hwang Soosul,
Chae MyoungHo,
Ma Keunsu,
Hong SungYong
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.2667
Subject(s) - damping factor , electrical impedance , impedance bridging , output impedance , electronic engineering , impedance matching , input impedance , image impedance , high impedance , quarter wave impedance transformer , equivalent circuit , computer science , control theory (sociology) , engineering , electrical engineering , voltage , control (management) , artificial intelligence
An adaptive impedance tuning circuit (AITC) is used to compensate for the impedance between the arbitrary load impedance and the characteristic impedance of interest. An AITC is required for correct and accurate load impedance measurements. A new type of mismatch measurement circuit that measures the arbitrary load impedance more accurately is proposed and its performance against existing methods is compared. The proposed circuit exhibits a significant performance improvement compared with the conventional method, and it could be applied to different communication systems that have a variety of input signal strengths.