Results 21 to 30 of about 185,372 (245)

Jitter Analysis and a Benchmarking Figure-of-Merit for Phase-Locked Loops [PDF]

, 2009
This brief analyzes the jitter as well as the power dissipation of phase-locked loops (PLLs). It aims at defining a benchmark figure-of-merit (FOM) that is compatible with the well-known FOM for oscillators but now extended to an entire PLL.
Gao, X., Geraedts, P.F.J., Klumperink, E.A.M., Nauta, B.   +3 more
core   +2 more sources

Evidence for adjustable bandwidth orientation channels

Frontiers in Psychology, 2014
The standard model of early vision claims that orientation and spatial frequency are encoded with multiple, fixed-bandwidth, and approximately independent channels. The standard model was developed from observer data that used deterministic patterns such
Christopher Patrick Taylor, Patrick J Bennett, Allison B Sekuler   +2 more
doaj   +1 more source

Efficient Distributed Estimation of Inverse Covariance Matrices

, 2016
In distributed systems, communication is a major concern due to issues such as its vulnerability or efficiency. In this paper, we are interested in estimating sparse inverse covariance matrices when samples are distributed into different machines.
Arroyo, Jesús, Hou, Elizabeth
core   +1 more source

Data-Driven Diagnostics of Mechanism and Source of Sustained Oscillations [PDF]

, 2015
Sustained oscillations observed in power systems can damage equipment, degrade the power quality and increase the risks of cascading blackouts. There are several mechanisms that can give rise to oscillations, each requiring different countermeasure to ...
Turitsyn, Konstantin, Wang, Xiaozhe
core   +1 more source

Design of Novel Reconfigurable Filter With Simultaneously Tunable and Switchable Passband

IEEE Access, 2019
This paper presents a new loading scheme for adding the varactor and PIN diodes into a quarter-wavelength (λ/4) resonator. Based on this, a novel reconfigurable filter with simultaneously tunable and switchable passband is introduced.
Yu-Jing Zhang, Jing Cai, Jian-Xin Chen
doaj   +1 more source

Group-delay measurement of frequency-converting devices using a comb generator [PDF]

, 2010
We propose a new method for the measurement of (group) delay from the radio-frequency (RF) input to the intermediate-frequency (IF) output of a mixer or a receiver.
Hoy, M., Scott, Jonathan B.
core   +2 more sources

A genetic algorithm based approach to fiber design for high coherence and large bandwidth supercontinuum generation [PDF]

, 2009
We present a new approach to the design of optical microstructured fibers that have group velocity dispersion (GVD) and effective nonlinear coefficient (gamma ) tailored for supercontinuum (SC) generation.
Alfano, Alfano, Domachuk, Dudley, Dudley, Dudley, Fercher, Ferrando, Gross, Holzwarth, Hult, Kaasalainen, Kano, Kerrinckx, Kim, Leong, Lorenc, Miret, Monro, Nishizawa, O’Donnell, Pestov, Price, Schenkel, Shahraam Afshar V., Silvestre, Silvestre, Solli, Stolen, Tanya M. Monro, Travers, Turner, Vogel, Washburn, Washburn, Wen Qi Zhang, Xia, Zhang, Zhu   +38 more
core   +2 more sources

Optical sum rule violation, superfluid weight and condensation energy in the cuprates

, 2000
The model of hole superconductivity predicts that the superfluid weight in the zero-frequency $\delta$-function in the optical conductivity has an anomalous contribution from high frequencies, due to lowering of the system's kinetic energy upon entering ...
A.A. Tsvetkov, A.G. Rojo, A.S. Katz, C. Panagopoulos, D. Van der Marel, D.C. Mattis, D.J. Singh, D.N. Basov, E.H. Kim, F. Marsiglio, F. Marsiglio, F. Marsiglio, F. Marsiglio, F. Marsiglio, G.D. Mahan, J. E. Hirsch, J. Loram, J. Schützmann, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.W. Loram, J.W. Loram, K. Takenaka, K.A. Moler, L.B. Ioffe, M. Tinkham, M. Tinkham, P.B. Allen, P.F. Maldague, P.W. Anderson, P.W. Anderson, R.A. Ferrell, S. Chakravarty, S. Chakravarty, S. Tajima, S. Uchida, T. Shibauchi, W. Kim   +44 more
core   +1 more source

Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding

Advanced Engineering Materials, EarlyView.
This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou, Mohammed Benwadih, Arnaud Gabas, Lina Kadura, Minh‐Quyen Le, Daniel Grinberg, Pierre‐Jean Cottinet   +6 more
wiley   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

Advanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar, Matthew Large, Andrea Ciavatti, Laura Basiricò, Beatrice Fraboni, Paul J. Sellin, Attila J. Mozer, Marco Petasecca, Matthew J. Griffith   +8 more
wiley   +1 more source