Publication detail

Reconfigurable Voltage-Mode First-Order Multifunction Filter Employing Second-Generation Voltage Conveyor (VCII) With Complete Standard Functions and Electronically Controllable Modification

JAIKLA, W. SANGYAEM, S. SUPAVARASUWAT, P. KHATEB, F. MINAEI, S. KULEJ, T. SUWANJAN, P.

Original Title

Reconfigurable Voltage-Mode First-Order Multifunction Filter Employing Second-Generation Voltage Conveyor (VCII) With Complete Standard Functions and Electronically Controllable Modification

Type

journal article in Web of Science

Language

English

Original Abstract

In this contribution, the realization of a first-order, two-input, single-output voltage-mode multifunction filter employing a second-generation voltage conveyor (VCII) is described. The proposed first-order versatile filter is extremely simple, composed of a single VCII and three passive devices. Because of its low output impedance, the output voltage node can be easily cascaded with other voltage-mode configurations without the requirement of any buffers. In the same circuit topology, the proposed firstorder filter provides various filtering functions: inverting and non-inverting low-pass (LPF), inverting and non-inverting high-pass (HPF), as well as inverting and non-inverting all-pass (APF). The digital method allows the selection of output first-order filtering functions without the need for additional circuits such as inverting or double-gain amplifiers. Furthermore, the pass-band gain of the low-pass and high-pass responses can be adjusted by varying the resistance or capacitance values without influencing the pole frequency as well as the phase response. The influence of VCII's current/voltage gain errors and parasitic elements on filtering performance is also investigated. Moreover, the modification of the proposed lagging phase allpass filter to achieve electronic controllability is also proposed by replacing the passive resistor with the operational transconductance amplifier (OTA). The 0.18 mu mTSMCCMOSstructure of the VCII employed in the proposed filter operates in the subthreshold region and utilizes the bulk-driven technique (BD), enabling it to operate with 0.4V supply voltage and consuming 383 nW of power. The total harmonic distortion (THD) of the LPF with an applied input voltage V-inpp =300mV @ 50Hz is -49.5 dB. An application example as a quadrature sinusoidal oscillator realized from the proposed first-order allpass filter and lossless integrator is also included. The performance of the proposed reconfigurable voltage-mode first-order filter is simulated and experimentally tested using a commercially available AD844 IC-based VCII with +/- 5 V power supply.

Keywords

First-order filter; second-generation voltage conveyor; low-voltage; low-power CMOS

Authors

JAIKLA, W.; SANGYAEM, S.; SUPAVARASUWAT, P.; KHATEB, F.; MINAEI, S.; KULEJ, T.; SUWANJAN, P.

Released

5. 6. 2023

Publisher

IEEE

Location

PISCATAWAY

ISBN

2169-3536

Periodical

IEEE Access

Year of study

11

Number

1

State

United States of America

Pages from

56152

Pages to

56169

Pages count

18

URL

https://ieeexplore.ieee.org/document/10144320

Full text in the Digital Library

http://hdl.handle.net/11012/213552

BibTex

@article{BUT183974,
  author="Winai {Jaikla} and Surasak {Sangyaem} and Piya {Supavarasuwat} and Fabian {Khateb} and Shahram {Minaei} and Tomasz {Kulej} and Peerawut {Suwanjan}",
  title="Reconfigurable Voltage-Mode First-Order Multifunction Filter Employing Second-Generation Voltage Conveyor (VCII) With Complete Standard Functions and Electronically Controllable Modification",
  journal="IEEE Access",
  year="2023",
  volume="11",
  number="1",
  pages="56152--56169",
  doi="10.1109/ACCESS.2023.3282991",
  issn="2169-3536",
  url="https://ieeexplore.ieee.org/document/10144320"
}

Documents

Reconfigurable Voltage-Mode First-Order Multifunction Filter Employing Second-Generation Voltage Conveyor (VCII) With Complete Standard Functions and Electronically Controllable Modification.pdf