Publication detail

Voltage Differencing Buffered Amplifier-Based Novel Truly Mixed-Mode Biquadratic Universal Filter with Versatile Input/Output Features

FASEEHUDDIN, M. HERENCSÁR, N. SHIREEN, S. TANGSRIRAT, W. ALI, S. H. M.

Original Title

Voltage Differencing Buffered Amplifier-Based Novel Truly Mixed-Mode Biquadratic Universal Filter with Versatile Input/Output Features

Type

journal article in Web of Science

Language

English

Original Abstract

In this paper, a first-of-a-kind mixed-mode universal filter employing three VDBAs and three passive components, is proposed. The filter operates in all four modes and provides all five filter responses, namely voltage-mode (VM), current-mode (CM), trans-impedance-mode (TIM), or trans-admittance-mode (TAM). Additionally, the same filter topology can also work as a CM single-input-multi-output (SIMO) filter. A state-of-the-art comparison of various `voltage differencing' variants of the voltage differencing buffered amplifier (VDBA)-based SIMO/MISO (single-input-multi-output/multi-input-single-output)-type biquad filters further highlight the significance of the presented research. In the proposed no passive component matching is required for generating the filter responses. The filter circuit also provides inbuilt tunability of the quality factor independent of the pole frequency. The non-ideal frequency dependent gain and component sensitivity analyses of the filter were also performed. The Silterra Malaysia 0.18 μm process design kit (PDK) {is employed to design and validated the proposed VDBA-based filter using the Cadence design software}. The simulation results closely follow the theoretical predictions. To further verify the practical feasibility of the proposed filter, an experimental evaluation is also completed. The VDBA-based filter is implemented using off-the-shelf operational transconductance amplifiers Intersil CA3080, Texas Instruments LF356 op-amp, and Analog Devices AD844s. The filter is designed for a characteristic frequency of 100~kHz. The time and frequency domain measurement results indicate the proper functioning of the filter.

Keywords

analog signal processing; filters; mixed-mode; voltage differencing buffered amplifier; VDBA

Authors

FASEEHUDDIN, M.; HERENCSÁR, N.; SHIREEN, S.; TANGSRIRAT, W.; ALI, S. H. M.

Released

25. 1. 2022

Publisher

MDPI

Location

Basel, Switzerland

ISBN

2076-3417

Periodical

Applied Sciences - Basel

Year of study

12

Number

3

State

Swiss Confederation

Pages from

1

Pages to

24

Pages count

24

URL

https://www.mdpi.com/2076-3417/12/3/1229

Full text in the Digital Library

http://hdl.handle.net/11012/203374

BibTex

@article{BUT175870,
  author="Mohammad {Faseehuddin} and Norbert {Herencsár} and Sadia {Shireen} and Worapong {Tangsrirat} and Sawal Hamid Md {Ali}",
  title="Voltage Differencing Buffered Amplifier-Based Novel Truly Mixed-Mode Biquadratic Universal Filter with Versatile Input/Output Features",
  journal="Applied Sciences - Basel",
  year="2022",
  volume="12",
  number="3",
  pages="1--24",
  doi="10.3390/app12031229",
  issn="2076-3417",
  url="https://www.mdpi.com/2076-3417/12/3/1229"
}