Results 21 to 30 of about 919,177 (398)
IEEE Access, 2023 The effect of load-pull on 3rd order intermodulation (IM3) radiation characteristics of a transmitting active phased array is studied and a general model for predicting the spatial distribution of fundamental tones and intermodulation products is ...
Veli-Pekka Kutinlahti +2 more
doaj +1 more source
Pendulum energy harvester with amplifier
Journal of Mechatronics, Electrical Power, and Vehicular Technology, 2018 This paper presents a new principle of inductive vibration power harvester. Harvester is a pendulum that uses energy capacitor which is the mass. The mass is connected to the pendulum via a gearbox to achieve greater movement of the pendulum that ...
Michal Černý +3 more
doaj +1 more source
High Efficiency Power Amplifier Based on Envelope Elimination and Restoration Technique [PDF]
, 2010 Due to complex envelope and phase modulation employed in modern transmitters it is necessary to use power amplifiers that have high linearity. Linear power amplifiers (classes A, B and AB) are commonly used, but they suffer from low efficiency especially
Alou Cervera, Pedro +9 more
core +2 more sources
Cytometry, 1990 AbstractLogarithmic amplifiers (log amps), which produce an output signal proportional to the logarithm of the input signal, are widely used in cytometry for measurements of parameters that vary over a wide dynamic range, e.g., cell surface immunofluorescence.
W, Gandler, H, Shapiro
openaire +2 more sources
Applied Sciences, 2022 A wide variety of applications require high peak laser intensity in conjunction with a narrow spectral linewidth. Typically, injection-locked amplifiers have been employed for this purpose, where a continuous wave oscillator is amplified in a secondary ...
Volker Sonnenschein, Hideki Tomita
doaj +1 more source
Efficiency of low power audio amplifiers and loudspeakers [PDF]
, 2001 In this paper we look at the load presented to audio amplifiers by real transducers. We consider the power losses in Class-AB and Class-D amplifier topologies, and determine that in order to predict efficiency it is necessary to consider the amplifier ...
Burrow, SG, Grant, Duncan A
core +2 more sources
A Load Modulated Balanced Amplifier for Telecom Applications
IEEE transactions on microwave theory and techniques, 2018 This paper presents the design and characterization of a load modulated balanced amplifier for telecom base station applications adopting a novel mode of operation.
R. Quaglia, S. Cripps
semanticscholar +1 more source
Constant Temperature Anemometer with Self-Calibration Closed Loop Circuit
Applied Sciences, 2020 In this paper, a Micro-Electro-Mechanical Systems (MEMS) calorimetric sensor with its measurement electronics is designed, fabricated, and tested. The idea is to apply a configurable voltage to the sensitive resistor and measure the current flowing ...
Jamel Nebhen +2 more
doaj +1 more source
Double-Differential Amplifier for sEMG Measurement by Means of a Current-Mode Approach
IEEE Access, 2022 This work proposes a Double Differential (DD) amplifier topology which exploits the advantages of the current-mode approach. DD amplifiers are useful as front-ends in standalone active electrodes for superficial electromyography (sEMG) wearable ...
Federico N. Guerrero +3 more
doaj +1 more source
Journal of Low Power Electronics and Applications, 2021 An approach to implement single-ended power-efficient static class-AB Miller op-amps with symmetrical and significantly enhanced slew-rate and accurately controlled output quiescent current is introduced.
Anindita Paul +6 more
doaj +1 more source