MISO Universal Filter Employing Single VDTA

Pimpol, Jirapun; Channumsin, Orapin; Tangsrirat, Worapong

doi:10.1109/iceast.2018.8434454

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…However, those studies may still have some disadvantages. For example, the ABB is not easily realized from the commercially available ICs [15, 22, 26, 27, 29-34, 36, 40-43]; the filtering parameters are not controlled electronically [17-21, 24-32, 34, 35]; the output impedance node is not low [15, 16, 18-23, 29, 30, 32-37, 40-44]; the matching condition is needed for selecting the filtering functions [20, 28, 31-34, 42, 43]; the extra double gain amplifier is needed [33,41,43,44], and the performance of the proposed multifunction active filters is verified through simulation only [15, 16, 19, 22, 24, 26, 27, 29-34, 36, 37, 40-44]; the quality factor cannot be controlled without affecting the natural frequency [15-38, 40-42, 44]; and the passband gain of the proposed filters cannot be controlled [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][32][33][34][35][36][37][38][39][40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Design of Electronically Controllable Multifunction Active Filter with Amplitude Controllability Using Two Commercially Available ICs

Onanong

Supavarasuwat

Angamnuaysiri

et al. 2022

Journal of Electrical and Computer Engineering

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In this contribution, the design and analysis of an active multifunction biquad filter that provides five voltage-mode filtering configurations in the same core filtering circuit are presented. The design emphasizes using the commercially available ICs, LT1228, which are easy for off-the-shelf implementation and cheaper compared with the chip implementation. The proposed multifunction filter is realized from two commercial LT1228 ICs as the active function block, combined with five passive elements (three resistors and two capacitors) with three input voltage nodes and a single output voltage node. The following advantages are given for this design: (i) it provides high-pass (HP), low-pass (LP), band-stop (BS), band-pass (BP), and all-pass (AP) filtering functions; (ii) orthogonal and electronic tuning of the natural frequency ω 0 and bandwidth (the quality factor: Q); (iii) output voltage node of the proposed circuit is low impedance; (iv) passband voltage gain is controllable; and (v) matching condition and extra double gain voltage-mode amplifier are not required. The effect of the parasitic element in LT1228 on the filter performance is analyzed and included to strengthen the design idea. The PSpice simulation results using LT1228 with ±5 V and the experimental results tested from the hardware implementation are given to prove the validity of the designed multifunction filter.

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Section: Introductionmentioning

confidence: 99%

Design of Electronically Controllable Multifunction Active Filter with Amplitude Controllability Using Two Commercially Available ICs

Onanong

Supavarasuwat

Angamnuaysiri

et al. 2022

Journal of Electrical and Computer Engineering

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“…One of the typical types of filtering structures, which are designed to offer multiple diverse transfer functions, is so called Multiple-Input Single-Output (MISO) filter. These filters [1][2][3][4][5][6][7][8][9][10][11], as the name suggests, consist of multiple input terminals and single output terminal where the resulting output response is given by specific selection or the particular combination of the excitation voltage(s) or current(s) used at that moment. As a result, it suggests the usage of copies of the input voltage/current or even their increased (multiplied) or decreased value in some cases.…”

Section: Introductionmentioning

confidence: 99%

Conversion of a MISO Filter into its Reconnection-less Reconfigurable Form with Complex Active elements

Langhammer

Šotner

2020

2020 30th International Conference Radioelektronika (RADIOELEKTRONIKA)

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This paper aims to show an easy way how to design a reconnection-less reconfigurable filter based on the modification of an existing MISO filter. The proposed filter offers the same transfer functions as the structure before the modification and additionally offers function of the direct transfer and high-pass function with transfer zero. In comparison with the structure before the modification, the proposed filter provides the electronic control of its pole frequency and quality factor. The design is supported by simulations in Cadence IC6 (spectre).

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“…For the research, infrastructure of the SIX Center was used. output (MISO) filters [4], [5]. It is also possible to come across the so called single-input single-output filters [6], but manual modification of the internal topology is necessary in this case.…”

Section: Introductionmentioning

confidence: 99%

Novel Reconnection-Less Reconfigurable Filter Design Based on Unknown Nodal Voltages Method and Its Fractional-Order Counterpart

Langhammer¹,

Šotner²,

Dvořák³

et al. 2019

ElAEE

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A novel solution of reconnection-less electronically reconfigurable filter is introduced in the paper. The filter is designed based on unknown nodal voltages method (MUNV) using operational transconductance amplifiers (OTAs) and variable gain amplifier (VGA). The structure can provide all-pass, band-stop, high-pass 2nd order functions, high-pass function of the 1st order and direct transfer from the same topology without requirement of manual reconnection. The proposed structure also offers the electronic control of the pole frequency. Moreover, fractional-order design of the proposed filter is also provided. The behaviour is verified by simulations using Cadence IC6 (spectre) software.

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MISO Universal Filter Employing Single VDTA

Cited by 4 publications

References 8 publications

Design of Electronically Controllable Multifunction Active Filter with Amplitude Controllability Using Two Commercially Available ICs

Design of Electronically Controllable Multifunction Active Filter with Amplitude Controllability Using Two Commercially Available ICs

Conversion of a MISO Filter into its Reconnection-less Reconfigurable Form with Complex Active elements

Novel Reconnection-Less Reconfigurable Filter Design Based on Unknown Nodal Voltages Method and Its Fractional-Order Counterpart

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