Detail publikace

Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance

JAIKLA, W. BUAKHONG, U. SIRIPONGDEE, S. KHATEB, F. ŠOTNER, R. SILAPAN, P. SUWANJAN, P. CHAICHANA, A.

Originální název

Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

This paper presents the design of a voltage-mode three-input single-output multifunction first-order filter employing commercially available LT1228 IC for easy verification of the proposed circuit by laboratory measurements. The proposed filter is very simple, consisting of a single LT1228 as an active device with two resistors and one capacitor. The output voltage node is low impedance, resulting in an easy cascade-ability with other voltage-mode configurations. The proposed filter provides four filter responses: low-pass filter (LP), high-pass filter (HP), inverting all-pass filter (AP-), and non-inverting all-pass filter (AP+) in the same circuit configuration. The selection of output filter responses can be conducted without additional inverting or double gains, which is easy to be controlled by the digital method. The control of pole frequency and phase response can be conducted electronically through the bias current (I-B). The matching condition during tuning the phase response with constant voltage gain is not required. Moreover, the pass-band voltage gain of the LP and HP functions can be controlled by adjusting the value of resistors without affecting the pole frequency and phase response. Additionally, the phase responses of the AP filters can be selected as both lagging or leading phase responses. The parasitic effects on the filtering performances were also analyzed and studied. The performances of the proposed filter were simulated and experimented with a & PLUSMN;5 V voltage supply. For the AP+ experimental result, the leading phase response for 1 kHz to 1 MHz frequency changed from 180 to 0 degrees. For the AP- experimental result, the lagging phase response for 1 kHz to 1 MHz frequency changed from 0 to -180 degrees. The design of the quadrature oscillator based on the proposed first-order filter is also included as an application example.

Klíčová slova

multifunction filter; LT1228; electronic control; voltage-mode; first-order circuit; phase shifted circuit; active building block

Autoři

JAIKLA, W.; BUAKHONG, U.; SIRIPONGDEE, S.; KHATEB, F.; ŠOTNER, R.; SILAPAN, P.; SUWANJAN, P.; CHAICHANA, A.

Vydáno

13. 12. 2021

Nakladatel

MDPI

Místo

BASEL

ISSN

1424-8220

Periodikum

SENSORS

Ročník

21

Číslo

21, IF: 3,576

Stát

Švýcarská konfederace

Strany od

1

Strany do

25

Strany počet

25

URL

https://www.mdpi.com/1424-8220/21/21/7376

Plný text v Digitální knihovně

http://hdl.handle.net/11012/203226

BibTex

@article{BUT175269,
  author="Winai {Jaikla} and Unchittha {Buakhong} and Surapong {Siripongdee} and Fabian {Khateb} and Roman {Šotner} and Phamorn {Silapan} and Peerawut {Suwanjan} and Amornchai {Chaichana}",
  title="Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance",
  journal="SENSORS",
  year="2021",
  volume="21",
  number="21, IF: 3,576",
  pages="1--25",
  doi="10.3390/s21217376",
  issn="1424-8220",
  url="https://www.mdpi.com/1424-8220/21/21/7376"
}