On the Functional Relation Between Quality Factor and Fractional Bandwidth
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F15%3A00227297" target="_blank" >RIV/68407700:21230/15:00227297 - isvavai.cz</a>
Result on the web
<a href="http://www.ieeeaps.org/" target="_blank" >http://www.ieeeaps.org/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/TAP.2015.2414472" target="_blank" >10.1109/TAP.2015.2414472</a>
Alternative languages
Result language
angličtina
Original language name
On the Functional Relation Between Quality Factor and Fractional Bandwidth
Original language description
The functional relation between the fractional bandwidth and the quality factor of a radiating system is investigated in this note. Several widely used definitions of the quality factor are compared on two examples of RLC circuits that serve as a simplified model of a single resonant antenna tuned to its resonance. It is demonstrated that for a first-order system, only the quality factor based on differentiation of the input impedance has unique proportionality to the fractional bandwidth, whereas e.g.the classical definition of the quality factor, i. e. the ratio of the stored energy to the lost energy per one cycle, is not uniquely proportional to the fractional bandwidth. In addition, it is shown that for higher-order systems the quality factor based on differentiation of the input impedance ceases to be uniquely related to the fractional bandwidth.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JA - Electronics and optoelectronics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA13-09086S" target="_blank" >GA13-09086S: An Investigation of Artificial Electromagnetic Materials and Metamaterials with Applied Numerical and Imaging Methods</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
IEEE Transactions on Antennas and Propagation
ISSN
0018-926X
e-ISSN
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Volume of the periodical
63
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
4
Pages from-to
2787-2790
UT code for WoS article
000357605400043
EID of the result in the Scopus database
2-s2.0-84930958485