Detail publikačního výsledku

Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses

ŠOTNER, R.; LANGHAMMER, L.; JEŘÁBEK, J.; USHAKOV, P.; DOSTÁL, T.

Originální název

Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses

Anglický název

Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses

Druh

Článek WoS

Originální abstrakt

This contribution presents and experimentally analyzes the idea how to reach the constant magnitude as well as the phase response in the fractional-order (FO) phase when shifting two-ports. The straightforward method employing the automatic gain control circuit (AGC) in a cascade after so-called constant phase block approximating FO integrator or differentiator is studied. The variable gain amplifier utilized in AGC and simple RC-based FO constant phase elements (approximating capacitors with order alpha = 1/4 and alpha = 1/2 as an example) connected in the feedback of operational amplifier-based integrator are established in the experimental setup. The operation indicated in three decades (between 100 Hz and 100 kHz) is evaluated. The known solutions of the standard FO phase shifting circuits are discussed and generally compared with the features obtained in this paper, together with the supposed effects of AGC on their performances.

Anglický abstrakt

This contribution presents and experimentally analyzes the idea how to reach the constant magnitude as well as the phase response in the fractional-order (FO) phase when shifting two-ports. The straightforward method employing the automatic gain control circuit (AGC) in a cascade after so-called constant phase block approximating FO integrator or differentiator is studied. The variable gain amplifier utilized in AGC and simple RC-based FO constant phase elements (approximating capacitors with order alpha = 1/4 and alpha = 1/2 as an example) connected in the feedback of operational amplifier-based integrator are established in the experimental setup. The operation indicated in three decades (between 100 Hz and 100 kHz) is evaluated. The known solutions of the standard FO phase shifting circuits are discussed and generally compared with the features obtained in this paper, together with the supposed effects of AGC on their performances.

Klíčová slova

Automatic gain control circuit; Constant magnitude response; Constant phase block; Constant phase element; Differentiator; Fractional-order; Integrator; Phase Shifter; Variable gain amplifier

Klíčová slova v angličtině

Automatic gain control circuit; Constant magnitude response; Constant phase block; Constant phase element; Differentiator; Fractional-order; Integrator; Phase Shifter; Variable gain amplifier

Autoři

ŠOTNER, R.; LANGHAMMER, L.; JEŘÁBEK, J.; USHAKOV, P.; DOSTÁL, T.

Rok RIV

2020

Vydáno

10.10.2019

Nakladatel

Kaunas University of Technology

Místo

Kaunas, Lithuania

ISSN

1392-1215

Periodikum

Elektronika Ir Elektrotechnika

Svazek

25

Číslo

5

Stát

Litevská republika

Strany od

25

Strany do

30

Strany počet

6

URL

http://eejournal.ktu.lt/index.php/elt/article/view/24352

Plný text v Digitální knihovně

http://hdl.handle.net/11012/184637

BibTex

@article{BUT159077,
  author="Roman {Šotner} and Lukáš {Langhammer} and Jan {Jeřábek} and Peter A. {Ushakov} and Tomáš {Dostál}",
  title="Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses",
  journal="Elektronika Ir Elektrotechnika",
  year="2019",
  volume="25",
  number="5",
  pages="25--30",
  doi="10.5755/j01.eie.25.5.24352",
  issn="1392-1215",
  url="http://eejournal.ktu.lt/index.php/elt/article/view/24352"
}

Dokumenty

04__ISSN_1392-1215__Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses_corrected
24352-Article Text-77640-1-10-20191008