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A multi-loop voltage-feedback filterless class-D switching audio amplifier using unipolar pulse-width-modulation
(Institute of Electrical and Electronics Engineers, 2004)
Methodology for modeling and implementation of RF power amplifiers
(Institute of Electrical and Electronics Engineers Inc., 2017)
A new methodology for modeling and implementation of RF power amplifiers is shown. Starting from pulsed measurements, we demonstrated that we can predict small and large signal performances considering frequency dispersion ...
Digital Predistortion for Joint Mitigation of I/Q Imbalance and MIMO Power Amplifier Distortion
(Institute of Electrical and Electronics Engineers Inc., 2017)
This paper analyzes the joint effects of in-phase and quadrature (I/Q) imbalance and power amplifier (PA) distortion for RF multiple input multiple output (MIMO) transmitters in the presence of crosstalk. This paper proposes ...
Amplificador Operacional y S.C.R.
(2015-08-01)
When the operational amplifier is connected to resistors and capacitors, various configurations of amplifier circuits are obtained. They describe and analyzes various forms of useful amplifier circuits. The response of ...
OpAmp-, CFOA- and OTA-Based Configurations to Design Multi-Scroll Chaotic Oscillators
(Academic Journals Inc., 2012)
A low-voltage programmable-gain current-mode amplifier
(2002-12-01)
A CMOS low-voltage, wide-band continuous-time current amplifier is presented. Based on an open-loop topology, the circuit is composed by transresistance and transconductance stages built around triode-operating transistors. ...
A low-voltage programmable-gain current-mode amplifier
(2002-12-01)
A CMOS low-voltage, wide-band continuous-time current amplifier is presented. Based on an open-loop topology, the circuit is composed by transresistance and transconductance stages built around triode-operating transistors. ...
Simple Real-Time Digital PWM Implementation for class-D Amplifiers With Distortion-free Baseband
(Institute Of Electrical And Electronics Engineers, 2014-10)
A real-time, digital algorithm for pulse width modulation (PWM) with distortion-free baseband is developed in this paper. The algorithm not only eliminates the intrinsic baseband distortion of digital PWM but also avoids ...
Design of a LNA and a Gilbert Cell Mixer MMICs with a GaAs PHEMT technology
(1999-12-01)
The design of a Gilbert Cell Mixer and a low noise amplifier (LNA), using GaAs PHEMT technology is presented. The compatibility is shown for co-integration of both block on the same chip, to form a high performance 1.9 GHz ...
Conversores híbridos aplicados a audio: estudo comparativo com amplificadores classe D
(Universidade Federal de Santa MariaBrasilEngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia ElétricaCentro de Tecnologia, 2019-09-13)
The convergence of knowledge related to mechanics, electronics and music has resulted in the development of a series of audio devices. Initially, signal amplifiers were developed working in linear region. Due to the ...