Now showing items 1-20 of 140

  • A 0.3-V 98-dB Rail-to-Rail OTA in 0.18 um CMOS 

    Khateb, Fabian; Kulej, Tomasz (IEEE, 2020-02-06)
    A new solution for an ultra-low-voltage, ultra-low-power operational transconductance amplifier (OTA) is presented in the paper. The design exploits a three-stage structure with a Reversed Miller Compensation Scheme, where ...
  • 0.3-V Nanopower Biopotential Low-Pass Filter 

    Kulej, Tomasz; Khateb, Fabian; Kumngern, Montree (IEEE, 2020-06-29)
    This paper presents a compact power-efficient CMOS fourth-order low-pass filter suitable for electrocardiogram (ECG) acquisition systems. The CMOS structure of the proposed filter utilize the bulkdriven technique and ...
  • 0.5 V fifth-order butterworth low-pass filter using multiple-input OTA for ECG applications 

    Kumngern, Montree; Khateb, Fabian; Kulej, Tomasz (MDPI, 2020-12-21)
    This paper presents a 0.5 V fifth-order Butterworth low-pass filter based on multiple-input operational transconductance amplifiers (OTA). The filter is designed for electrocardiogram (ECG) acquisition systems and operates ...
  • 0.5 V Fully Differential Universal Filter Based on Multiple Input OTAs 

    Jaikla, Winai; Khateb, Fabian; Kumngern, Montree; Kulej, Tomasz; Kumar Ranjan, Rajeev; Suwanjan, Peerawut (IEEE, 2020-11-17)
    The design of a low-power, low-voltage, fully-differential universal biquad filter is presented in this work, which is constructed from four multiple-input gate-driven operational transconductance amplifiers (MI-OTAs) along ...
  • 0.5-V High Linear and Wide Tunable OTA for Biomedical Applications 

    Khateb, Fabian; Kulej, Tomasz; Akbari, Meysam; Kumngern, Montree (IEEE, 2021-08-04)
    This paper presents a low-voltage nano-power multiple-input operational transconductance amplifier (MI-OTA) with high linearity performance and increased input voltage swing. The enhanced performances are achieved thanks ...
  • A 1 V 92 dB SNDR 10 kHz Bandwidth Second-Order Asynchronous Delta-Sigma Modulator for Biomedical Signal Processing 

    Kledrowetz, Vilém; Fujcik, Lukáš; Prokop, Roman; Háze, Jiří (MDPI, 2020-07-25)
    In this paper, a second-order asynchronous delta-sigma modulator (ADSM) is proposed based on the active-RCintegrators. The ADSM is implemented in the 0.18 µ m CMOS Logic or Mixed-Signal/RF, General Purpose process from the ...
  • About v-i Pinched Hysteresis of Some Non-Memristive Systems 

    Biolek, Dalibor; Biolek, Zdeněk; Biolková, Viera; Ascoli, Alon; Tetzlaff, Ronald (Hindawi, 2018-09-24)
    A special subset of two-terminal elements providing pinched hysteresis loops in the voltage-current plane with the lobe area increasing with the frequency is analysed. These devices are identified as non-memristive systems ...
  • Acceptability and sensory evaluation of energy bars and protein bars enriched with edible insect 

    Adámek, Martin; Adámková, Anna; Mlček, Jiří; Borkovcová, Marie; Bednářová, Martina (HACCP Consulting, 2018-04-24)
    For consumers, one of the basic criteria of choosing a foodstuff, apart from nutritional values, is their taste and smell. In edible insect as a novel food, these criteria are not quite decisive. The main criterion in the ...
  • An Active Resistor With a Lower Sensitivity to Process Variations, and its Application in Current Reference 

    Kledrowetz, Vilém; Háze, Jiří; Prokop, Roman; Fujcik, Lukáš (IEEE, 2020-10-29)
    A novel active resistor circuit offering less sensitivity to process and temperature variations without any extra trimming is proposed. The circuit consists of two accurately matched, high resistance polysilicon (hripoly) ...
  • All Pinched Hysteresis Loops Generated by (alpha, beta) Elements: in What Coordinates They May be Observable 

    Biolek, Zdeněk; Biolek, Dalibor; Biolková, Viera; Kolka, Zdeněk (IEEE, 2020-12-01)
    Two existing theorems for studying pinched hysteresis loops generated by nonlinear higher-order elements from Chua's table are reformulated, namely the generalized homothety theorem and the associated Loop Location Rule, ...
  • Amperometric Sensor for Detection of Chloride Ions 

    Trnková, Libuše; Adam, Vojtěch; Hubálek, Jaromír; Babula, Petr; Kizek, René (MDPI, 2008-09-15)
    Chloride ion sensing is important in many fields such as clinical diagnosis, environmental monitoring and industrial applications. We have measured chloride ions at a carbon paste electrode (CPE) and at a CPE modified with ...
  • Analog Multipliers-Based Double Output Voltage Phase Detector for Low-Frequency Demodulation of Frequency Modulated Signals 

    Šotner, Roman; Polák, Ladislav; Jeřábek, Jan; Petržela, Jiří; Kledrowetz, Vilém (IEEE, 2021-06-25)
    This work deals with the design of a simple double output voltage phase detector, using a specific type of analog multiplier, and its application in a frequency demodulator. The design of active parts was performed in ...
  • Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM 

    Mouralová, Kateřina; Beneš, Libor; Bednář, Josef; Zahradníček, Radim; Prokeš, Tomáš; Fries, Jiří (MDPI, 2020-04-19)
    Die-sinking electric discharge machining (EDM) is an indispensable technological operation, especially in the production of molds and all internal and external shapes and cavities. For this reason, the effect of machine ...
  • Analysis of the machinability of copper alloy Ampcoloy by WEDM 

    Mouralová, Kateřina; Beneš, Libor; Prokeš, Tomáš; Bednář, Josef; Zahradníček, Radim; Jankových, Róbert; Fries, Jiří; Vontor, Jakub (MDPI, 2020-02-11)
    The unconventional technology wire electrical discharge machining is widely used in all areas of industry. For this reason, there is always an effort for efficient machining at the lowest possible cost. For this purpose, ...
  • Anodic formation and SEM characterization of zirconium oxide nanostructured films 

    Kamnev, Kirill; Prášek, Jan; Mozalev, Alexander (Tanger, 2020-10-01)
    Zirconium oxide (ZrO2) is a widely utilized inorganic material with excellent dielectric, optical, and biocompatible characteristics. The properties and areas of the ZrO2 applications can be further broadened by making the ...
  • Anodic formation of HfO2 nanostructure arrays for resistive switching application 

    Kamnev, Kirill; Pytlíček, Zdeněk; Prášek, Jan; Mozalev, Alexander (TANGER LTD, 2021-01-01)
    Thin dielectric films are actively investigated as materials for novel resistive random-access memories based on resistive switching effect in metal/insulator/metal structures. Thin HfO2 films are of particular interest ...
  • Antibacterial activity of AgNPs-TiO2 nanotubes: influence of different nanoparticle stabilizers 

    Bílek, Ondřej; Fialová, Tatiana; Otáhal, Alexandr; Adam, Vojtěch; Šmerková, Kristýna; Fohlerová, Zdenka (Royal Society of Chemistry, 2020-12-15)
    Enhanced antibacterial properties of nanomaterials such as TiO2 nanotubes (TNTs) and silver nanoparticles (AgNPs) have attracted much attention in biomedicine and industry. The antibacterial properties of nanoparticles ...
  • Apoferritin modified magnetic particles as doxorubicin carriers for anticancer drug delivery 

    Blažková, Iva; Nguyen, Hoai Viet; Dostálová, Simona; Kopel, Pavel; Stanisavljevic, Maja; Vaculovičová, Markéta; Stiborová, Marie; Eckschlager, Tomáš; Kizek, René; Adam, Vojtěch (MDPI, 2013-06-27)
    Magnetic particle mediated transport in combination with nanomaterial based drug carrier has a great potential for targeted cancer therapy. In this study, doxorubicin encapsulation into the apoferritin and its conjugation ...
  • Basil – A Comparison of the Total Phenolic Content and Antioxidant Activity in Selected Cultivars 

    Adámek, Martin; Mlček, Jiří; Adámková, Anna; Mišurec, Vít Guiglielmo; Orsavová, Jana; Bučková, Martina; Búran, Martin; Plášková, Anna; Kouřimská, Lenka (HACCP Consulting, 2021-05-28)
    During the lifetime, the human body forms a considerable amount of free radicals damaging DNA, cell membranes, and their components. A wider application of basil (Ocimum basilicum), an aromatic plant and one of the common ...
  • Biologically active compounds contained in grape pomace 

    Vojáčková, Klára; Mlček, Jiří; Škrovánková, Soňa; Adámková, Anna; Adámek, Martin; Orsavová, Jana; Bučková, Martina; Fic, Vlastimil; Kouřimská, Lenka; Búran, Martin (HACCP Consulting, 2020-09-28)
    A healthy lifestyle and gastronomic trends based on traditional and local foods accompanied by waste-free technologies are currently in the primary focus. One of the raw materials with properties in alignment with such ...