Design of Shadow Filter Using Low-Voltage Multiple-Input Operational Transconductance Amplifiers
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F25%3APU155438" target="_blank" >RIV/00216305:26220/25:PU155438 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3390/app15020781" target="_blank" >https://doi.org/10.3390/app15020781</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/app15020781" target="_blank" >10.3390/app15020781</a>
Alternative languages
Result language
angličtina
Original language name
Design of Shadow Filter Using Low-Voltage Multiple-Input Operational Transconductance Amplifiers
Original language description
This paper introduces shadow filters that employ multiple-input operational transconductance amplifiers (MI-OTAs) as the active component. Two configurations of shadow filters are proposed. The first configuration, in contrast to previous designs, enables the adjustment of the quality factor without affecting the passband gains of the BPF, LPF, and HPF, thus achieving optimal frequency responses for these filters. The second configuration allows for the variation of the natural frequency without impacting the passband gains of the HPF, LPF, and BPF, maintaining constant passband gains. Moreover, the natural frequency can be electronically controlled by modifying parameters of the original biquad filters, providing advantages in compensating for process, voltage, and temperature variations. The MI-OTA is designed to provide multiple-input differential terminals using the multiple-input bulk-driven MOS transistor (MIBD-MOST) technique, allowing differential input signals to be converted into current output through its transconductance gain. The OTA operates at a supply voltage of 450 mV and consumes 81 nW of power, with the MOS transistors operating in weak inversion. The OTA and shadow filters were designed and simulated using a 0.18 mu m CMOS process to validate the functionality and performance of the proposed circuits.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10400 - Chemical sciences
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Sciences - Basel
ISSN
2076-3417
e-ISSN
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Volume of the periodical
15
Issue of the periodical within the volume
2
Country of publishing house
CH - SWITZERLAND
Number of pages
19
Pages from-to
1-19
UT code for WoS article
001403959600001
EID of the result in the Scopus database
2-s2.0-85215814290