Publication result detail

State-Variable Higher-Order Filters with Differential Input/Output Current Followers

KUBÁNEK, D.; VRBA, K.

Original Title

State-Variable Higher-Order Filters with Differential Input/Output Current Followers

English Title

State-Variable Higher-Order Filters with Differential Input/Output Current Followers

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

This paper describes the design of a higher-order analog filter with differential input and output current followers. Prototypes of these active elements with improved internal structure are ready to be manufactured. The filter design is based on the second canonic state-variable structure and the resulting circuit offers an arbitrary transfer function. As an example, fourth-order Cauer low-pass filter is designed. It allows dynamic optimization, which prevents the active devices from being overloaded. PSpice modeling confirms a correct functionality of the filter at high frequencies. Computer simulation is also used to analyze the influence of active element real properties and of passive element tolerances on the frequency characteristic of the proposed filter.

English abstract

This paper describes the design of a higher-order analog filter with differential input and output current followers. Prototypes of these active elements with improved internal structure are ready to be manufactured. The filter design is based on the second canonic state-variable structure and the resulting circuit offers an arbitrary transfer function. As an example, fourth-order Cauer low-pass filter is designed. It allows dynamic optimization, which prevents the active devices from being overloaded. PSpice modeling confirms a correct functionality of the filter at high frequencies. Computer simulation is also used to analyze the influence of active element real properties and of passive element tolerances on the frequency characteristic of the proposed filter.

Keywords

active filter, state variable, current mode, current follower

Key words in English

active filter, state variable, current mode, current follower

Authors

KUBÁNEK, D.; VRBA, K.

RIV year

2010

Released

30.10.2008

Publisher

Global Engineering, Science and Technology Society

Location

Seoul, Korea

ISBN

1738-6438

Periodical

International Transaction on Computer Science and Engineering

Volume

49

Number

1

State

Republic of Korea

Pages from

186

Pages to

196

Pages count

11

BibTex

@article{BUT49228,
  author="David {Kubánek} and Kamil {Vrba}",
  title="State-Variable Higher-Order Filters with Differential Input/Output Current Followers",
  journal="International Transaction on Computer Science and Engineering",
  year="2008",
  volume="49",
  number="1",
  pages="186--196",
  issn="1738-6438"
}