• A 1.05 NEF stacked cascode inverter-based amplifier for neural signal recording 

      Seifert, Bruno Valentin (Master thesis, 2021)
      Strømeffektive lavstøy forsterkere er en viktig del av moderne bærbare biosensorer på grunn av deres liten størrelse og lav batterikapasitet. Denne rapporten presenter en stablet forsterker med en cascode-invertererbasert ...
    • A fully differential capacitively-coupled high CMRR low-power chopper amplifier for EEG dry electrodes 

      Habibzadeh Tonekabony Shad, Erwin; Molinas Cabrera, Maria Marta; Ytterdal, Trond (Journal article; Peer reviewed, 2020)
      The use of dry electrodes is increasing rapidly. Since their impedance is high, there is a high impedance node at the connecting node between the electrode and amplifier. This leads to absorb powerline signal and high CMRR ...
    • A Fully Tunable Low-power Low-noise and High Swing EMG Amplifier with 8.26 PEF 

      Naderi, Kebria; Habibzadeh Tonekabony Shad, Erwin; Molinas Cabrera, Maria Marta; Heidari, Ali (Chapter, 2020)
      In this paper, a low-noise low-power bio-potential amplifier for electromyogram (EMG) signals have designed and simulated in a commercially available 0.18 μm CMOS technology. In the first stage, a tunable band low-noise ...
    • High Input Impedance Capacitively-coupled Neural Amplifier and Its Boosting Principle 

      Habibzadeh Tonekabony Shad, Erwin; Naderi, Kebria; Molinas Cabrera, Maria Marta (Chapter, 2020)
      This article proposes a technique for increasing the input impedance of conventional capacitively-coupled neural amplifiers based on careful examination of its analytical model. Following the precise derivation of the input ...
    • Impedance and Noise of Passive and Active Dry EEG Electrodes: A Review 

      Habibzadeh Tonekabony Shad, Erwin; Molinas Cabrera, Maria Marta; Ytterdal, Trond (Peer reviewed; Journal article, 2020)
      Dry electrodes are a promising solution for prolonged EEG signal acquisition, whereas wet electrodes may lose their signal quality in the same situation and require skin preparation for set-up. Here, we review the impedance ...
    • A Low-power and Low-noise Multi-purpose Chopper Amplifier with High CMRR and PSRR 

      Habibzadeh Tonekabony Shad, Erwin; Molinas Cabrera, Maria Marta; Ytterdal, Trond (Chapter, 2020)
      In this article, by choosing and optimizing suitable structure in each stage, we have designed a multi-purpose low noise chopper amplifier. The proposed neural chopper amplifier with high CMRR and PSRR is suitable for EEG, ...
    • A Low-power High-gain Inverter Stacking Amplifier with Rail-to-Rail Output 

      Habibzadeh Tonekabony Shad, Erwin; Moeinfard, Tania; Molinas Cabrera, Maria Marta; Ytterdal, Trond (Chapter, 2021)
      In this article, a rail-to-rail low-power amplifier is presented based on stacking inverter-based amplifiers. The output voltages of each inverter-based amplifier are converted to a current and then mirrored to the output ...
    • Modified Current-reuse OTA to Achieve High CMRR by utilizing Cross-coupled Load 

      Habibzadeh Tonekabony Shad, Erwin; Molinas Cabrera, Maria Marta; Ytterdal, Trond (Chapter; Peer reviewed, 2019)
      Since biomedical signals have very low amplitude and high common-mode like environmental noise, the amplifiers used with these signals should have high CMRR. The cross-coupled amplifier attenuates common-mode signal strongly ...
    • A Power Efficient Low-noise and High Swing CMOS Amplifier for Neural Recording Applications 

      Naderi, Kebria; Habibzadeh Tonekabony Shad, Erwin; Molinas Cabrera, Maria Marta; Heidari, Ali (Peer reviewed; Journal article, 2020)
      In this paper, a power efficient, low-noise and high swing capacitively-coupled amplifier (CCA) for neural recording applications is proposed. The use of current splitting technique and current scaling technique in a current ...
    • A Power Efficient, High Gain and High Input Impedance Capacitively-coupled Neural Amplifier 

      Habibzadeh Tonekabony Shad, Erwin; Moeinfard, Tania; Molinas Cabrera, Maria Marta; Ytterdal, Trond (Chapter, 2020)
      In this article, a capacitively-coupled neural amplifier based on a new high gain low-noise amplifier is proposed. By utilizing a cross-coupled structure, the open-loop gain of the amplifier is boosted. This modification ...
    • A Power-Efficient Low-noise and High Swing CMOS Amplifier for Neural Recording Applications 

      Naderi, Kebria; Habibzadeh Tonekabony Shad, Erwin; Molinas Cabrera, Maria Marta; Heidari, Ali (Chapter, 2020)
      In this paper, a power efficient, low-noise and high swing capacitively-coupled amplifier (CCA) for neural recording applications is proposed. The use of current splitting technique and current scaling technique in a current ...
    • A Very Low SEF Neural Amplifier by Utilizing a High Swing Current-Reuse Amplifier 

      Naderi, Kebria; Habibzadeh Tonekabony Shad, Erwin; Molinas, Marta Maria Cabrera; Heidari, Ali; Ytterdal, Trond (Chapter, 2020)
      Although current-reuse amplifier has been widely used in biomedical applications because of their low input-referred thermal noise, they don't have high output swing and their gain is limited. In this article, a rail-to-rail ...