Title :
A Historical Note on Impedance-Matching Limitations [Antenna Designer´s Notebook]
Author :
Lopez, Alfred R.
Author_Institution :
ARL Assoc., Commack, NY, USA
Abstract :
In Chu´s classic 1948 paper, he presented results that related the theoretical lower bound on Q to the antenna´s size for an electrically small antenna. He also presented results that related the theoretical upper bound on the impedance-matching bandwidth, the tolerable reflection magnitude, and the antenna´s size. These latter results, which have not been fully appreciated, are highlighted in this concise article.
Keywords :
antenna theory; impedance matching; integral equations; antenna size; electrically small antenna; impedance-matching bandwidth; reflection magnitude; theoretical lower bound; theoretical upper bound; Antenna theory; Dipole antennas; History; Impedance matching; Upper bound; Bode-Fano equation; Chu equation; Impedance matching; impedance matching upper bound;
Journal_Title :
Antennas and Propagation Magazine, IEEE
DOI :
10.1109/MAP.2013.6645159
