Publication detail

Tunable fully-differential filter employing MOTA and DACA elements

LANGHAMMER, L. JEŘÁBEK, J. POLÁK, J. ŠOTNER, R. ŠTORK, P.

Original Title

Tunable fully-differential filter employing MOTA and DACA elements

English Title

Tunable fully-differential filter employing MOTA and DACA elements

Type

journal article

Language

en

Original Abstract

A new fully-differential (F-D) filtering structure of the 2nd-order current-mode universal filter is described in this paper. Presented filter is also proposed in a single-ended (S-E) form in order to compare behavior of single-ended and fully-differential structures. Signal-flow graphs method is used to design both presented filters. Multi-output transconductance amplifiers (MOTAs), digitally adjustable current amplifier (DACA), multi-output current follower (MO-CF) and fully differential current follower (FD-CF) were used in proposal. Filters possess of ability to adjust their pole frequency and quality factor independently of each other. The actual function of proposed filters has been verified by PSpice simulations and experimental measurements.

English abstract

A new fully-differential (F-D) filtering structure of the 2nd-order current-mode universal filter is described in this paper. Presented filter is also proposed in a single-ended (S-E) form in order to compare behavior of single-ended and fully-differential structures. Signal-flow graphs method is used to design both presented filters. Multi-output transconductance amplifiers (MOTAs), digitally adjustable current amplifier (DACA), multi-output current follower (MO-CF) and fully differential current follower (FD-CF) were used in proposal. Filters possess of ability to adjust their pole frequency and quality factor independently of each other. The actual function of proposed filters has been verified by PSpice simulations and experimental measurements.

Keywords

current amplifiers; current-mode; DACA; experimental results; frequency filter; fully-differential; MOTA; single-ended; operational transconductance amplifier

Released

19.09.2016

Pages from

107

Pages to

119

Pages count

13

BibTex


@article{BUT124261,
  author="Lukáš {Langhammer} and Jan {Jeřábek} and Josef {Polák} and Roman {Šotner} and Petr {Štork}",
  title="Tunable fully-differential filter employing MOTA and DACA elements",
  annote="A new fully-differential (F-D) filtering structure of the 2nd-order current-mode universal filter is described in this paper. Presented filter is also proposed in a single-ended (S-E) form in order to compare behavior of single-ended and fully-differential structures. Signal-flow graphs method is used to design both presented filters. Multi-output transconductance amplifiers (MOTAs), digitally adjustable current amplifier (DACA), multi-output current follower (MO-CF) and fully differential current follower (FD-CF) were used in proposal. Filters possess of ability to adjust their pole frequency and quality factor independently of each other. The actual function of proposed filters has been verified by PSpice simulations and experimental measurements.",
  chapter="124261",
  howpublished="online",
  number="2&3",
  volume="23",
  year="2016",
  month="september",
  pages="107--119",
  type="journal article"
}