Publication detail

Power-Efficient Electronically Tunable Fractional-Order Filter

TASNEEM, S. KUMAR RANJAN, R. PAUL, S. HERENCSÁR, N.

Original Title

Power-Efficient Electronically Tunable Fractional-Order Filter

Type

journal article in Web of Science

Language

English

Original Abstract

This article describes a low-voltage, low-power fractional-order low-pass filter (FO-LPF) of order 1 + alpha, which is implemented using a voltage differencing differential difference amplifier (VDDDA). The VDDDA structure is implemented using the bulk-driven metal oxide semiconductor transistor technique. The transistors operate in the subthreshold region to maintain low-supply voltage and low-power consumption. The FO-LPF structure implemented using this VDDDA structure is compact. It includes three VDDDAs and three grounded capacitors along with two active resistors implemented using MOS transistors. In addition, this filter structure provides electronic tuning of its order and cut-off frequency through the bias current of the active component used. The effects of tracking error and parasitics on the functionality of the proposed FO-LPF were investigated. The VDDDA and filter operate at +/- 300 mV and dissipate only 207 nW and 663 nW of power, respectively. Thus, the VDDDA structure and filter are suitable for low-voltage and low-power operation. Layouts of the proposed VDDDA as well as the FO-LPF were designed in the Cadence Virtuoso environment. Post-layout simulation results of the designed circuits imply that they are suitable for fabrication. Noise, total harmonic distortion, Monte-Carlo, and PVT analyses were also performed.

Keywords

bulk-driven technique; current-mode; electronically tunable; fractional-order; low-voltage; low-power; low-pass filter

Authors

TASNEEM, S.; KUMAR RANJAN, R.; PAUL, S.; HERENCSÁR, N.

Released

2. 1. 2024

Publisher

MDPI

Location

BASEL

ISBN

2504-3110

Periodical

Fractal and Fractional

Year of study

8

Number

1

State

Swiss Confederation

Pages from

1

Pages to

24

Pages count

24

URL

https://www.mdpi.com/2504-3110/8/1/31

Full text in the Digital Library

http://hdl.handle.net/11012/250111

BibTex

@article{BUT197335,
  author="Sadaf {Tasneem} and Rajeev {Kumar Ranjan} and Sajal K. {Paul} and Norbert {Herencsár}",
  title="Power-Efficient Electronically Tunable Fractional-Order Filter",
  journal="Fractal and Fractional",
  year="2024",
  volume="8",
  number="1",
  pages="1--24",
  doi="10.3390/fractalfract8010031",
  issn="2504-3110",
  url="https://www.mdpi.com/2504-3110/8/1/31"
}