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Institution

Mitsubishi Electric

CompanyRatingen, Germany
About: Mitsubishi Electric is a company organization based out in Ratingen, Germany. It is known for research contribution in the topics: Signal & Voltage. The organization has 23024 authors who have published 27591 publications receiving 255671 citations. The organization is also known as: Mitsubishi Electric Corporation & Mitsubishi Denki K.K..


Papers
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Journal ArticleDOI
Kazuo Kyuma1, Shuichi Tai1, Masahiro Nunoshita1, N. Mikami1, Y. Ida1 
TL;DR: In this article, two kinds of fiber-optic sensors for electric current and voltage were tentatively fabricated by using Faraday and Pockels' effects of a Bi 12 GeO 20 (BGO) single crystal.
Abstract: By using Faraday and Pockels' effects of a Bi 12 GeO 20 (BGO) single crystal, two kinds of fiber-optic sensors for electric current and voltage were tentatively fabricated. The optimum design of these sensors and their performances were investigated. It was verified that the BGO crystal is very available for either of the current and voltage sensors with regard to their sensitivity and stability. As for the experimental results, the minimum detectable magnetic field of 10-2Oe and the temperature dependence within ±2 percent in the temperature range of -25 to 85°C was obtained for the current sensor, while for the voltage sensor the sensitivity of 10-3V and the temperature dependence within ± 0.5 percent was in the same temperature range.

48 citations

Patent
19 Dec 2002
TL;DR: A dynamo electric machine includes a rotor having magnetic poles with permanent magnets and a stator having armature windings concentratedly wound around teeth as mentioned in this paper, where the number of pole pairs of the magnetic poles of the rotor is P, diameter of the rotors is D (meters), and a spatial harmonic order of a predetermined harmonic component of an armature magnetomotive force of a rotor is given.
Abstract: A dynamo electric machine includes a rotor having magnetic poles with permanent magnets and a stator having armature windings concentratedly wound around teeth. When the number of pole pairs of the magnetic poles of the rotor is P, diameter of the rotor is D (meters), and a spatial harmonic order of a predetermined harmonic component of an armature magnetomotive force of the rotor is N ((N=P to the 1.5th power)×(N to the minus 4-th power)×(the square of P)×D<0.6 (in meters).

48 citations

Book ChapterDOI
23 Sep 2014
TL;DR: It is shown that imaging the contact layer is at most 16-times expensive than that of a metal layer in terms of the number of images.
Abstract: A successful detection of the stealthy dopant-level circuit trojan, proposed by Becker et al. at CHES 2013 [1], is reported. Contrary to an assumption made by Becker et al., dopant types in active region are visible with either scanning electron microscopy SEM or focused ion beam FIB imaging. The successful measurement is explained by an LSI failure analysis technique called the passive voltage contrast [2]. The experiments are conducted by measuring a dedicated chip. The chip uses the diffusion programmable device [3]: an anti-reverse-engineering technique by the same principle as the stealthy dopant-level trojan. The chip is delayered down to the contact layer, and images are taken with 1 an optical microscope, 2 SEM, and 3 FIB. As a result, the four possible dopant-well combinations, namely i p+/n-well, ii p+/p-well, iii n+/n-well and iv n+/p-well are distinguishable in the SEM images. Partial but sufficient detection is also achieved with FIB. Although the stealthy dopant-level circuits are visible, however, they potentially make a detection harder. That is because the contact layer should be measured. We show that imaging the contact layer is at most 16-times expensive than that of a metal layer in terms of the number of images.

48 citations

Journal ArticleDOI
TL;DR: A tight upper bound on the average bit error probability (ABEP) is proposed and an asymptotic ABEP expression is derived in the high signal-to-noise ratio (SNR) regime, which sheds light on when it is beneficial to select the FD (or HD) mode.
Abstract: In this paper, the spatial modulation (SM) technique is employed at the source and relay nodes in a full-duplex two-way relay channel (FD-TWRC) to support spectral-efficient bi-directional communications while guaranteeing a low cost implementation. Maximum likelihood detectors are employed at each node that is subject to an intrinsic self-loop interference. We first propose a tight upper bound on the average bit error probability (ABEP). Then, based on the ABEP upper bound, an asymptotic ABEP expression is derived in the high signal-to-noise ratio (SNR) regime. Exploiting the asymptotic ABEP, an exact SNR threshold for the selection between FD-TWRC-SM and half-duplex (HD)-TWRC-SM is derived in a closed form, which sheds light on when it is beneficial to select the FD (or HD) mode. In addition, the power allocation (PA) among sources and relay is investigated, through which an optimal PA factor in terms of ABEP is obtained. All analytical results derived in this paper are verified by Monte Carlo simulations, from which some new insights are obtained on the performance of FD-TWRC-SM.

48 citations

Patent
13 Sep 2007
TL;DR: In this article, an n-type diffusion blocking layer of a nitride compound semiconductor material is located between the active layer and the p-type cladding layer and is In x Al y Ga 1−x−y N, where x ≥ 0, y ≥ 0 and (x+y) < 1.
Abstract: A semiconductor laser device comprises an n-type cladding layer, a p-type cladding layer, and an active layer which is sandwiched between the n-type cladding layer and the p-type cladding layer The p-type cladding layer contains magnesium as a dopant impurity Further, an n-type diffusion blocking layer of a nitride compound semiconductor material located between the active layer and the p-type cladding layer and is In x Al y Ga 1−x−y N, where x≧0, y≧0, and (x+y)<1 The n-type diffusion blocking layer preferably has a concentration of a dopant impurity producing n-type conductivity in a range from 5×10 17 cm −3 to 5×10 19 cm −3

48 citations


Authors

Showing all 23025 results

NameH-indexPapersCitations
Ron Kikinis12668463398
William T. Freeman11343269007
Takashi Saito112104152937
Andreas F. Molisch9677747530
Markus Gross9158832881
Michael Wooldridge8754350675
Ramesh Raskar8667030675
Dan Roth8552328166
Joseph Katz8169127793
James S. Harris80115228467
Michael Mitzenmacher7942236300
Hanspeter Pfister7946623935
Dustin Anderson7860728052
Takashi Hashimoto7398324644
Masaaki Tanaka7186022443
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20224
2021327
20201,060
20191,605
20181,517
20171,090