This paper presents the design and characterization of fully differential amplifiers for application in an automatic circuit sizing tool. The tool uses Simulated Annealing as main optimization heuristic and electrical simulations for circuit specifications evaluations. The methodology is based on the minimization of a cost function and a set of constraints in order to size each transistor of th...

This is the second volume of the new series “Mathematics and its Applications” published by the Union of Bulgarian Mathematicians∗ Petar Popivanov, the author of the book, is a well known expert in the theory of partial differential equations (PDE), who has published several books and over 120 research articles. Since 1969 he works at the Institute of Mathematics and Informatics of the Bulgaria...

Differential circuits are often described by their differential gain and common mode rejection ratio (CMRR). This approach, however, neglects the effect that the common mode signal has on the transient response and stability of the circuit. This work shows that the actual behavior of differential circuits in front of common mode voltages is completely described by the common-to-differential mod...

The implementation of a fully-differential (FD) instrumentation amplifier (IA), based on indirect current feedback (ICF) and aimed to electrical impedance measurements in an Internet Things (IoT) biomedical scenario, is presented. IA consists two FD transconductors, process the input signal feed back output signal, summing stage, used add both contributions generate correcting common-mode netwo...

We report on the first fully differential calculation of next-to-next-to-leading-order (NNLO) QCD radiative corrections to production bottom-quark pairs at hadron colliders. The is performed by using $q_T$ subtraction formalism handle and cancel infrared singularities in real virtual contributions. computation implemented Matrix framework, thereby allowing us efficiently compute arbitrary infra...