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Innovative Packaging Design for Electronics in Extreme Environments

Brice McPherson
APEI, AR, USA

Power electronics appear in many everyday products, including smartphones, electronic car parts, and household objects. Such devices require controlled temperature ranges, switching frequencies, and voltage levels to operate smoothly and reliably. For harsh environments, such as the depths below the earth’s surface where oil is drilled, there is an increasing need to develop electronic systems ...

How Reclosers Ensure a Steady Supply of Power: It’s All in the Magnet

O. Craciun, and colleagues
ABB AG
Ladenburgh, Germany

When a tree branch touches overhead cables and causes a momentary short circuit, your lights may flicker. A device called a recloser ensures that power to your home is not cut off for a longer period. ABB AG, a leading manufacturer in power technology, is working towards designing a more reliable recloser. One objective in this design process was to optimize the size of the permanent magnet ...

Pushing the Limits of Chip Density

Derek Bassett and Michael Carcasi
Tokyo Electron America
Austin, TX

Chip manufacturers have been adhering to Moore’s law, a law stating that the number of transistors that can be economically placed on an integrated circuit doubles every year, since 1965. As the number of transistors increases, however, the process of manufacturing integrated circuit, called photolithography, becomes more difficult. Each device requires approximately 200 cleaning and ...

A 100-Fold Improvement in Lithography Resolution Realized with a 150-Year-Old “Perfect Imaging” System

Juan Carlos Miñano and Dejan Grabovičkić
Cedint Polytechnic University of Madrid
Spain

The idea of "perfect imaging", that is a resolution less than the wavelength of light producing the image, was first proposed in the mid-19th century by famed Scottish physicist James Clerk Maxwell. For the next 150 years, it was widely believed that such was impossible due to the fact that light diffracts around points that are the same size or smaller in wavelength. Then, in 2009, Ulf ...

Control of Joule Heating Extends Performance and Device Life

Jean-Louis Gelet and Antoine Gerlaud
Mersen, France

Large electrical systems carrying high currents could pose a danger if any of their components, such as fuses and bus bars, fail. In order to increase safety and improve manufacturing, it is necessary to understand the failure mechanisms of those components. One of those components, a bus bar, is made up of a single piece of conducting metal that replaces individual, thick cables when conducting ...

Keeping LEDs Cool Gets More Manageable Through Simulation

Aulis Tuominen and Mika Maaspuro
University of Turku
Turku, Finland

Toni Lopez
Philips Research
Eindhoven, The Netherlands

Sami Yllikäinen
Hella Lighting Finland Oy
Salo, Finland

Raimo Laitinen
Helvar Oy Ab
Karkkila, Finland

Light-emitting diodes (LEDs) offer many benefits over incandescent lighting, such as long life spans and high luminous efficiency, and they are environmentally friendly. One of the drawbacks, however, is that LEDs need to operate at the lowest possible temperatures and this must be carefully regulated. Researchers at Business and Innovation Development Technology at the University of Turku in ...

介电应力仿真助力 ABB 智能电网分接开关的设计

Tommi Paananen, David Geibel, Bill Teising, Mårten Almkvist, Jon Brasher, Josh Elder, Bob Elick and Chris Whitten
ABB Alamo
Tennessee

电力消费者通常需要非常稳定的电压。变压器包含一个分接开关,它可以通过切换输入或输出电路的连接点来改变次级线圈匝数与初级线圈匝数之比。改变这个比例可以实现输出电压分级调整。随着世界逐步迈向现代化智能电网,必须对分接开关的设计进行改进,以供智能电网使用。 ABB ...

Multiphysics Software, a Versatile, Cost-Effective R&D Tool at Sharp

Chris Brown
Sharp Laboratories of Europe, UK

There are several kinds of technology that designers at Sharp Laboratories of Europe work to create. From LED lighting, displays, and microfluidic lab-on-a-chip technology, to complex energy systems used in various devices, Sharp needed a new approach to finding the best designs. COMSOL Multiphysics and its add-on products provided the versatility to augment Sharp's research and development in ...

选择隐形天线的阵列

F. De Vita, S. Di Marco, F. Costa and P. Turchi
Altran, Italy

隐形飞机和舰船可以通过优化表面的形状使能量反射远离探测源或采用吸收雷达波的材料来躲避雷达探测。但是,如果舰船或飞机的天线需要正常的通讯工作,就不能完全掩蔽它。这也使其成为剩余的具有很大雷达散射截面 (RCS) 的组件之一,而这基本上会破坏整个系统对于雷达的隐形性。 ALTRAN ...

螺旋谐振腔滤波器分析

S.P. Yushanov, J.S. Crompton, and K.C. Koppenhoeffer
AltaSim Technologies

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