Publication detail

New Resistorless and Electronically Tunable Realization of Dual-Output VM All-Pass Filter Using VDIBA

HERENCSÁR, N. MINAEI, S. KOTON, J. YUCE, E. VRBA, K.

Original Title

New Resistorless and Electronically Tunable Realization of Dual-Output VM All-Pass Filter Using VDIBA

English Title

New Resistorless and Electronically Tunable Realization of Dual-Output VM All-Pass Filter Using VDIBA

Type

journal article in Web of Science

Language

en

Original Abstract

In this paper, a new active element called voltage differencing inverting buffered amplifier (VDIBA) is presented. Using single VDIBA and a capacitor, a new resistorless voltage-mode (VM) first-order all-pass filter (APF) is proposed, which provides both inverting and non-inverting outputs at the same configuration simultaneously. The pole frequency of the filter can be electronically controlled by means of bias current of the internal transconductance. No component-matching conditions are required and it has low sensitivity. In addition, the parasitic and loading effects are also investigated. By connecting two newly introduced APFs in open loop a novel second-order APF is proposed. As another application, the proposed VM APF is connected in cascade to a lossy integrator in a closed loop to design a four-phase quadrature oscillator. The theoretical results are verified by SPICE simulations using TSMC 0.18 um level-7 CMOS process parameters with +-0.9 V supply voltages. Moreover, the behavior of the proposed VM APF was also experimentally measured using commercially available integrated circuit OPA860 by Texas Instruments.

English abstract

In this paper, a new active element called voltage differencing inverting buffered amplifier (VDIBA) is presented. Using single VDIBA and a capacitor, a new resistorless voltage-mode (VM) first-order all-pass filter (APF) is proposed, which provides both inverting and non-inverting outputs at the same configuration simultaneously. The pole frequency of the filter can be electronically controlled by means of bias current of the internal transconductance. No component-matching conditions are required and it has low sensitivity. In addition, the parasitic and loading effects are also investigated. By connecting two newly introduced APFs in open loop a novel second-order APF is proposed. As another application, the proposed VM APF is connected in cascade to a lossy integrator in a closed loop to design a four-phase quadrature oscillator. The theoretical results are verified by SPICE simulations using TSMC 0.18 um level-7 CMOS process parameters with +-0.9 V supply voltages. Moreover, the behavior of the proposed VM APF was also experimentally measured using commercially available integrated circuit OPA860 by Texas Instruments.

Keywords

Analog signal processing; all-pass filter; electronically tunable circuit; four-phase quadrature oscillator; loading effect; resistorless filter; voltage-mode; voltage differencing inverting buffered amplifier (VDIBA)

RIV year

2013

Released

07.01.2013

Publisher

Springer

ISBN

0925-1030

Periodical

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING

Year of study

74

Number

1

State

NL

Pages from

141

Pages to

154

Pages count

14

URL

Full text in the Digital Library

Documents

BibTex


@article{BUT93563,
  author="Norbert {Herencsár} and Shahram {Minaei} and Jaroslav {Koton} and Erkan {Yuce} and Kamil {Vrba}",
  title="New Resistorless and Electronically Tunable Realization of Dual-Output VM All-Pass Filter Using VDIBA",
  annote="In this paper, a new active element called voltage differencing inverting buffered amplifier (VDIBA) is presented. Using single VDIBA and a capacitor, a new resistorless voltage-mode (VM) first-order all-pass filter (APF) is proposed, which provides both inverting and non-inverting outputs at the same configuration simultaneously. The pole frequency of the filter can be electronically controlled by means of bias current of the internal transconductance. No component-matching conditions are required and it has low sensitivity. In addition, the parasitic and loading effects are also investigated. By connecting two newly introduced APFs in open loop a novel second-order APF is proposed. As another application, the proposed VM APF is connected in cascade to a lossy integrator in a closed loop to design a four-phase quadrature oscillator. The theoretical results are verified by SPICE simulations using TSMC 0.18 um level-7 CMOS process parameters with +-0.9 V supply voltages. Moreover, the behavior of the proposed VM APF was also experimentally measured using commercially available integrated circuit OPA860 by Texas Instruments.",
  address="Springer",
  chapter="93563",
  doi="10.1007/s10470-012-9936-2",
  institution="Springer",
  number="1",
  volume="74",
  year="2013",
  month="january",
  pages="141--154",
  publisher="Springer",
  type="journal article in Web of Science"
}