In this work a novel bulk-driven (BD) ultra-low-voltage (ULV) class-AB operational transconductance amplifier (OTA) which exploits local common mode feedback (LCMFB) strategies to enhance performance and robustness against process, voltage temperature (PVT) variations has been proposed. The body-to-gate (B2G) interface increase the slew rate attain behaviour, whereas two pseudo-resistors have e...

This work presents a two-stage operational transconductance amplifier suitable for sub-1 V operation. characteristic is achieved thanks to the adoption of bulk-driven non-tailed differential pair. Local positive feedback exploited boost equivalent first stage and quasi-floating gate approach enables class AB operation second stage. Implemented in standard 180 nm CMOS technology supplied at 0.6 ...

A 45MHz-2.5GHz broadband CMOS up-conversion mixer implemented in a conventional 0.18µm technology is presented this letter. The offered employs bisymmetric class-AB input stage order to provide high linearity and match the IF impedance over 0.3-20.15MHz frequency range. draws 3mA current from 1.8V supply voltage, core chip dimension of 0.05*0.08mm2. At range 45MHz-2.5GHz, output third-order int...

This is the second of two papers that study asymptotic structure space-times with a non-negative cosmological constant $\Lambda$. paper deals case $\Lambda >0$. Our approach founded on `tidal energies' built Weyl curvature and, specifically, we use super-Poynting vector computed from rescaled Bel-Robinson tensor at infinity to provide covariant, gauge-invariant, criterion for existence, or abse...

We propose a class of multiplicative algorithms for Nonnegative Matrix Factorization (NMF) which are robust with respect to noise and outliers. To achieve this, we formulate a new family generalized divergences referred to as the Alpha-Beta-divergences (AB-divergences), which are parameterized by the two tuning parameters, alpha and beta, and smoothly connect the fundamental Alpha-, Betaand Gam...

Carbapenem-resistant Acinetobacter baumannii (CR-AB) causes serious nosocomial infections, especially in ICU wards of hospitals, worldwide. Expression of bla OXA genes is the chief mechanism of conferring carbapenem resistance among CR-AB. Although some bla OXA genes have been studied among CR-AB isolates from Iran, their bla OXA-23-like genes have not been investigated. We used a multiplex-PCR...

The power consumption for various opamps used in modulators are considered. We rst classify the diierent opamp topologies used in such modulators. We then develop a generalized in-tegrator model that allows us to compare the power consumption for all these topologies. We also derive an expression for the minimum theoretical bound on the power dissipation. We illustrate our results with two desi...

The aim of this study was to examine the differences in the early craniofacial morphology of Class Ill malocclusions. Lateral cephalograms of 45 subjects with a Class III malocclusion and an anterior crossbite in the deciduous or mixed dentition were examined before treatment, after treatment, and during the long-term retention stage. The anterior crossbites of all patients were corrected after...

The class-D power amplifiers which operate in a switched mode have become an attractive alternative of the conventional analog power amplifiers class-A, B and AB in the field of audio applications. They offer high power efficiency compared to analog power amplifiers and can be realised as completely digital power amplifiers. This paper briefly overviews the basic concepts of analog and digital ...