On the Functional Relation Between Quality Factor and Fractional Bandwidth

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

On the Functional Relation Between Quality Factor and Fractional Bandwidth

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

On the Functional Relation Between Quality Factor and Fractional Bandwidth

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

—

Projekt

<a href="/cs/project/GA13-09086S" target="_blank" >GA13-09086S: Výzkum umělých elektromagnetických materiálů a metamateriálů s užitými numerickými a zobrazovacími metodami</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Transactions on Antennas and Propagation

ISSN

0018-926X

e-ISSN

—

Svazek periodika

63

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

2787-2790

Kód UT WoS článku

000357605400043

EID výsledku v databázi Scopus

2-s2.0-84930958485