Single CFTA Based Current-Mode Universal Biquad Filter
This paper introduces a new current-mode (CM) universal biquad filter structure with optimum number of active and passive elements. In the design, the proposed circuit uses a single active element namely, current follower trans-conductance amplifier (CFTA) and two grounded capacitors as passive elem...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sultan Qaboos University
2016-12-01
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| Series: | The Journal of Engineering Research |
| Subjects: | |
| Online Access: | https://journals.squ.edu.om/index.php/tjer/article/view/180 |
| _version_ | 1818495550093262848 |
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| author | S.V. Singh R.S. Tomar D.S. Chauhan |
| author_facet | S.V. Singh R.S. Tomar D.S. Chauhan |
| author_sort | S.V. Singh |
| collection | DOAJ |
| description | This paper introduces a new current-mode (CM) universal biquad filter structure with optimum number of active and passive elements. In the design, the proposed circuit uses a single active element namely, current follower trans-conductance amplifier (CFTA) and two grounded capacitors as passive elements. The main feature of the proposed circuit is that it can realize all five standard filtering functions such as low pass (LP), band pass (BP), high pass (HP), band stop (BS) and all pass (AP) responses across an explicit high impedance output terminal through the appropriate selection of three inputs. In addition, the same circuit is also capable to simultaneously realize three filtering functions (LP, BP and HP) by the use of single current input signal. Moreover, the proposed structure is suited for low voltage, low power operations and offers the feature of electronic tunability of pole-frequency and quality factor. Further to extend the utility of the proposed circuit block higher order current-mode filters are also realized through direct cascading. A detailed non-ideal and parasitic study is also included. The performance of the circuits has been examined using standard 0.25 μ m CMOS parameters from TSMC. |
| first_indexed | 2024-12-10T18:21:59Z |
| format | Article |
| id | doaj.art-eaf10ac121454355ab79fe0b13e00861 |
| institution | Directory Open Access Journal |
| issn | 1726-6009 1726-6742 |
| language | English |
| last_indexed | 2024-12-10T18:21:59Z |
| publishDate | 2016-12-01 |
| publisher | Sultan Qaboos University |
| record_format | Article |
| series | The Journal of Engineering Research |
| spelling | doaj.art-eaf10ac121454355ab79fe0b13e008612022-12-22T01:38:10ZengSultan Qaboos UniversityThe Journal of Engineering Research1726-60091726-67422016-12-0113217218610.24200/tjer.vol13iss2pp172-186180Single CFTA Based Current-Mode Universal Biquad FilterS.V. Singh0R.S. Tomar1D.S. Chauhan2Department of Electronics and Communication Engineering, Jaypee Institute of Information Technology, U.P. IndiaDepartment of Electronics and Communication Engineering, Anand Engineering College, U.P. IndiaDepartment of Electrical Engineering, G.L.A. UniversityThis paper introduces a new current-mode (CM) universal biquad filter structure with optimum number of active and passive elements. In the design, the proposed circuit uses a single active element namely, current follower trans-conductance amplifier (CFTA) and two grounded capacitors as passive elements. The main feature of the proposed circuit is that it can realize all five standard filtering functions such as low pass (LP), band pass (BP), high pass (HP), band stop (BS) and all pass (AP) responses across an explicit high impedance output terminal through the appropriate selection of three inputs. In addition, the same circuit is also capable to simultaneously realize three filtering functions (LP, BP and HP) by the use of single current input signal. Moreover, the proposed structure is suited for low voltage, low power operations and offers the feature of electronic tunability of pole-frequency and quality factor. Further to extend the utility of the proposed circuit block higher order current-mode filters are also realized through direct cascading. A detailed non-ideal and parasitic study is also included. The performance of the circuits has been examined using standard 0.25 μ m CMOS parameters from TSMC.https://journals.squ.edu.om/index.php/tjer/article/view/180analog signal processing, biquad-filters, current-mode, tunable. |
| spellingShingle | S.V. Singh R.S. Tomar D.S. Chauhan Single CFTA Based Current-Mode Universal Biquad Filter The Journal of Engineering Research analog signal processing, biquad-filters, current-mode, tunable. |
| title | Single CFTA Based Current-Mode Universal Biquad Filter |
| title_full | Single CFTA Based Current-Mode Universal Biquad Filter |
| title_fullStr | Single CFTA Based Current-Mode Universal Biquad Filter |
| title_full_unstemmed | Single CFTA Based Current-Mode Universal Biquad Filter |
| title_short | Single CFTA Based Current-Mode Universal Biquad Filter |
| title_sort | single cfta based current mode universal biquad filter |
| topic | analog signal processing, biquad-filters, current-mode, tunable. |
| url | https://journals.squ.edu.om/index.php/tjer/article/view/180 |
| work_keys_str_mv | AT svsingh singlecftabasedcurrentmodeuniversalbiquadfilter AT rstomar singlecftabasedcurrentmodeuniversalbiquadfilter AT dschauhan singlecftabasedcurrentmodeuniversalbiquadfilter |