Search results for " Adler"
showing 5 items of 5 documents
Influence of Active Device Nonlinearities on the Determination of Adler's Injection.Locking Q-Factor
2011
The problem of the correct evaluation of Q-factor appearing in Adler's equation for injection-locking is addressed. Investigation has shown that recent results presented in the literature, while extending applicability of the original method, do not completely account for nonlinear effects occurring when two-port active devices are involved. To overcome such limitation, use can be made of a newly developed theory in the dynamical complex envelope domain, capable of providing first-approximation exact dynamical models of driven quasi-sinusoidal oscillators. Some preliminary results are presented here concerning a class of injection-locked oscillators with single-loop feedback type configurat…
Accelerated Analysis of Low-Level Injection Operation for Transistor-Based Oscillating Amplifiers
2011
The problem of the accelerated analysis of oscillating amplifiers is addressed. To achieve both computational efficiency and adequate accuracy also in case of transmission-type, transistor-based, circuit structures, a novel approach is proposed which makes use of a general reduced-order model of the injected oscillator. A perturbation-refined analysis method is thus applied, which permits to derive the first-order exact set of differential equations that describes the system behavior in the fundamental-frequency complex-envelope domain. As illustrated by the RF Meissner driven oscillator example presented, the devised approach achieves the stated goals, and lends itself as a convenient, des…
Jules Adler (1865-1952). Peindre sous la Troisième République
2017
International audience; Artiste d'origine franc-comtoise ayant fait carriere à Paris sous la Troisième République, Jules Adler (1865-1952) fut avant tout le « peintre des humbles », du petit peuple parisien, des mineurs de Charleroi, des cheminaux...Son œuvre, bien plus que de déployer la simple palette d'un artiste regionaliste, affirme une démarche singulière face à la société de son temps, face à la guerre, aux questions posées à la peinture. Artiste naturaliste, inspiré directement des conditions sociales de son temps et attiré par les spectacles de la vie ardente, active et parfois douloureuse, il incarne une voie alternative ouverte à la fin du XIXe siècle entre les avant-gardes impre…
Jules Adler, peintre dans la Grande Guerre
2017
International audience
Du peintre au musée : Jules Adler et Luxeuil
2016
International audience