The testing and troubleshooting of high power and high frequency systems such as distributed antenna systems (DAS), base stations, and various radar applications require buffering to prevent a power overload to the testing equipment and sensitive subsystem internal circuitry. With powers as high as 60 dBm (1000 Watts), radio frequency (RF) terminations and attenuators are … [Read more...]
What a Thermoelectric Cooler is REALLY Good For…
Fairy tales… perpetual motion machines… Not all fairy tales are perpetual motion machines, but all perpetual motion machines are certainly fairy tales. Before I get into the specifics of thermoelectric coolers, however, it seems appropriate to set the stage for this particular category of fairy tales. There are two classical types of perpetual motion “machines,” called (not … [Read more...]
Thermal Management and Safety Regulation of Smart Watches
ABSTRACT A smart watch is one of the most popular wearable devices now. Along with battery life and security, thermal safety is the most common concern. We show how to meet the ergonomic standards for users and predict thermal performance in typical scenarios. Thermal simulation software applied at the design stage can provide guidance on the use of heat spreading materials … [Read more...]
Does a 10°C Increase in Temperature Really Reduce the Life of Electronics by Half?
This may seem like a silly question to ask in a magazine entitled “Electronics Cooling”, but why do we really care what temperature of electronics really is, anyway? The simple answer to that question is that it is universally recognized that electronics reliability when devices are too hot for too long of a time. The difficult answers to the question are in defining exactly … [Read more...]
From Measurements to Standardized Multi-Domain Compact Models of Light Emitting Diodes (LED)
Co-authored by: Genevieve Martin*, Andras Poppe, Sangye Lungten, Veli Heikkinen, Joan Yu, Marta Rencz, Robin Bornoff *Corresponding Author Introduction The rise of LED technology is changing the ecosystem of the lighting industry. Delphi4LED [1] is a European Union consortium that is responding to these changes by providing the EU LED Lighting industry with a set of tools … [Read more...]
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