International Technology Roadmap for Semiconductors 2003の要求清浄度について － シリコンウエハ表面と雰囲気環境に要求される清浄度, 分析方法の現状について －

Wave propagation and group velocity

By L I Sedov London: Cleaver-Hume Press Ltd Pp xvi + 363 Price 105s This is really two separate books within the same pair of covers First of all Chapters 1-3, some 145 pages, are devoted to the discussion of similarity and dimensional, methods and their application to a variety of problems in mechanics and fluid mechanics

http://iopscience.iop.org/article/10.1088/0031-9112/11/6/008/pdf

Similarity and Dimensional Methods in Mechanics

Vorlesungen uber theoretische Physik Von Prof. Arnold Sommerfeld. Band 1: Mechanik. Vierte, neubearbeitete Auflage. Pp. xii + 276. 18 D. marks. Band 2: Mechanik der deformierbaren Medien. Pp. xv + 376 + 4 plates. 18 D. marks. Band 3: Elektrodynamik. Pp. xvi + 368. 18 D. marks. Band 6: Partielle Differentialgleichungen der Physik. Pp. xiii + 332. 18 D. marks. (Wiesbaden: Dieterich'sche Verlagsbuchhandlung, 1947–1949.)

/pdf/lectures-on-theoretical-physics-4m0v0ffz5s.pdf

Lectures on Theoretical Physics

A new prototype triboelectric nanogenerator with superhydrophobic and self-cleaning features is invented to harvest water drop energy based on a sequential contact electrification and electrostatic induction process. Because of the easy-fabrication, cost-effectiveness, and robust properties, the developed triboelectric nanogenerator expands the potential applications to harvesting energy from household wastewater and raindrops.

Harvesting Water Drop Energy by a Sequential Contact-Electrification and Electrostatic-Induction Process

This article deals with the development of computation method dedicated to the extraction of the transient EM-near-field at certain distance from the given 2D data for the baseband application up to GHz As described in the methodological analysis, it is based on the use of fft combined with the plane wave spectrum (PWS) operation In order to verify the efficiency of the introduced method, a radiating source formed by the combination of electric dipoles excited by a short duration transient pulse current with a spectrum bandwidth of about 5 GHz is considered It was shown that compared to the direct calculation, one gets the same behaviors of magnetic near-field components H x , H y and H z with the presented extraction method, in the planes placed at {3 mm, 8 mm, 13 mm} of the initial reference plane To confirm the relevance of the proposed transform, validation with a standard commercial tool was performed In future, we envisage to exploit the proposed computation method to predict the transient electromagnetic (EM) field emissions notably in the microwave electronic devices for the EMC applications

/pdf/time-domain-near-field-near-field-transform-with-pws-1aj24sscig.pdf

Time-domain near-field/near-field transform with PWS operations

A calculation method of the E-field components Ex, y, z(t) from Hx, y(t) in time-domain is presented. The H-field radiation is generated by considering an ultra-short excitation current. The proposed method is based on the combination of the Fourier and plane wave spectrum (PWS) transforms associated with the Maxwell-Ampere relation. The relevance of the method was confirmed by considering a set of dipoles placed arbitrarily in the horizontal plane and excited by a pulse current of 0.6 ns width at half-height. Magnetic field components Hx, y(t) were calculated in the rectangular plane above the dipoles at different heights in the near-field range. It was demonstrated that extracted Ex, y, z(t) fields were in good agreement with the analytical results.

Calculation of time-domain near-field Ex, y, z(t) from Hx, y(t) with PWS and FFT transforms

An overview on low energy wake-up radio technology: Active and passive circuits associated with MAC and routing protocols

This paper deals with the fast S-parameter modeling of multi-port lumped structures. The developed model is based on unfamiliar formalism using the tensorial analysis of networks (TAN). The modeling methodology is described with the general abstract topology and different application cases. The methodology consists, first, in elaborating the equivalent graph topology of the considered problem. Then, it is followed by the TAN mathematical abstraction, including, successively, the branch and mesh space analyses. The problem metric can be written with the tensorial Ohm's law expressed in function of the covariant voltage, contravariant current, and the twice covariant impedance in the mesh spaces. The equivalent Z-matrix of the considered multi-port structure is established from an innovative reduction method of the mesh impedance. The S-parameter model is extracted from the Z-to-S matrix transform. The effectiveness of the established fast S-parameter TAN modeling is validated with three cases of proof of concept constituted by TT-cell, the TTT-cell two-port circuit, and four-port structure inspired from the 3D coaxial shielded cable. As expected, an excellent agreement between the S-parameters calculated from the TAN model and simulated from the commercial tools from DC to some hundred's megahertz is obtained. In the future, the developed model is outstandingly beneficial for fast and accurate applications notably for the conduced shielded cable electromagnetic compatibility analysis.

/pdf/fast-s-parameter-tan-model-of-n-port-lumped-structures-2egvistefi.pdf

Fast S-Parameter TAN Model of n-Port Lumped Structures

This paper demonstrates the exhibition of pulse compres- sion from an electronic circuit with negative group delay (NGD). This circuit consists of a fleld efiect transistor (FET) cascaded with shunt RLC network. Theoretic and experimental investigations have proved that, at its resonance frequency, the group delay of this circuit is al- ways negative. The present study shows that around this resonance, it presents a gain form enabling to generate pulse compression. To validate this concept, as proof-of-principle, devices with one- and two- stages FET were implemented and tested. Measurements of the one- stage test device evidenced an NGD of about i2:5ns and simulta- neously with 2dB ampliflcation operating at 622MHz resonance fre- quency. In the frequency domain, in the case of a Gaussian input pulse with 40MHz frequency standard deviation, this resulted in 125% ex- pansion of pulse width compared to the input one. In time domain, simulations showed that the compression was about 80% in the case of an input Gaussian pulse with 4ns standard deviation. With the other prototype comprised of two-stage NGD cell, the use of a sine carrier of about 1.03GHz allowed to achieve 87% pulse width compression.

https://www.jpier.org/pierc/pierc20/12.10122305.pdf

Blaise Ravelo

Papers

Time-domain near-field/near-field transform with PWS operations

Calculation of time-domain near-field Ex, y, z(t) from Hx, y(t) with PWS and FFT transforms

An overview on low energy wake-up radio technology: Active and passive circuits associated with MAC and routing protocols

Fast S-Parameter TAN Model of n-Port Lumped Structures

Investigation on the microwave pulse signal compression with ngd circuit