Detail publikace

A Current-Mode Universal Frequency Filter Using Transconductance Amplifiers and Transimpedance Amplifier

Originální název

A Current-Mode Universal Frequency Filter Using Transconductance Amplifiers and Transimpedance Amplifier

Anglický název

A Current-Mode Universal Frequency Filter Using Transconductance Amplifiers and Transimpedance Amplifier

Jazyk

en

Originální abstrakt

A new filtering structure of the 2nd-order universal frequency filter is presented. The proposed filter operates in current-mode and is designed using signal-flow graphs (SFG) method. Operational transconductance amplifiers (OTAs), current follower (CF) and transimpedance amplifier (TIA) are used in the proposal. The filter possesses of ability to adjust the pole frequency and quality factor of the filter independently of each other. All output responses are taken directly from high-impedance outputs of used active elements. The proposal requires only two external passive elements, namely two capacitors which are both grounded. The proper function of the proposed filter is verified by PSpice simulations and also by experimental measurements. Demonstrations of possibility to independently tune the pole frequency and quality factor of the proposed filter are illustrated in the paper. Subsequently, comparison of results obtained from simulations and experimental measurements is also included.

Anglický abstrakt

A new filtering structure of the 2nd-order universal frequency filter is presented. The proposed filter operates in current-mode and is designed using signal-flow graphs (SFG) method. Operational transconductance amplifiers (OTAs), current follower (CF) and transimpedance amplifier (TIA) are used in the proposal. The filter possesses of ability to adjust the pole frequency and quality factor of the filter independently of each other. All output responses are taken directly from high-impedance outputs of used active elements. The proposal requires only two external passive elements, namely two capacitors which are both grounded. The proper function of the proposed filter is verified by PSpice simulations and also by experimental measurements. Demonstrations of possibility to independently tune the pole frequency and quality factor of the proposed filter are illustrated in the paper. Subsequently, comparison of results obtained from simulations and experimental measurements is also included.

BibTex


@inproceedings{BUT113460,
  author="Lukáš {Langhammer} and Jan {Jeřábek} and Josef {Polák} and Petr {Číka}",
  title="A Current-Mode Universal Frequency Filter Using Transconductance Amplifiers and Transimpedance Amplifier",
  annote="A new filtering structure of the 2nd-order universal frequency filter is presented. The proposed filter
operates in current-mode and is designed using signal-flow graphs (SFG) method. Operational
transconductance amplifiers (OTAs), current follower (CF) and transimpedance amplifier (TIA) are used in
the proposal. The filter possesses of ability to adjust the pole frequency and quality factor of the filter
independently of each other. All output responses are taken directly from high-impedance outputs of used
active elements. The proposal requires only two external passive elements, namely two capacitors which are
both grounded. The proper function of the proposed filter is verified by PSpice simulations and also by
experimental measurements. Demonstrations of possibility to independently tune the pole frequency and
quality factor of the proposed filter are illustrated in the paper. Subsequently, comparison of results obtained
from simulations and experimental measurements is also included.",
  booktitle="Proceedings of the 6th International Conference on Circuits, Systems, Control, Signals (CSCS 15) - Advances in Electrical and Computer Engineering",
  chapter="113460",
  howpublished="print",
  year="2015",
  month="january",
  pages="81--87",
  type="conference paper"
}