The biggest challenge is that LED chips are quickly approaching their theoretical limits for efficient light output. As they do, incremental improvements to the LED die are providing diminishing returns on investment. Fortunately, innovations in optical silicone packaging materials are introducing new, more cost-effective ways to enhance efficiency (lm/W), as well as cost (lm/$) and light density (lm/cm2).
Adeline Chan, product marketing manager, Cree, Inc.: LED technology has been evolving rapidly over the years. From a performance perspective, lumen output and efficacy numbers have been improving. Other “areas” of the LED technology have also progressed such as thermal properties, substrate materials, light distribution pattern,
The Internet of Things (IoT) is a hot topic these days and for good reason — the market offers a tremendous opportunity to create products that make consumers’ lives easier and will touch many things in our daily life with over 30 billion Internet connected devices expected by 2020.
Today, low-temperature co-fired ceramic (LTCC), multilayer ceramic (MLC) and ceramic mono-block technologies are the dominant choices for the implementation of surface mount components for RF passive filters, diplexers, baluns and front end modules. LTCC is the most popular ceramic technology since it uses miniature lumped components....
Active RFID usually operates at 455 MHz, 850 MHz, 900 MHz, 2.4 GHz or 5.8 GHz. It is suited to applications such as asset and people tracking, access control, passive keyless entry in cars, parking management systems and temperature monitoring. Active RFID tags have greater transmission power than passive tags.
For decades, technology experts and home automation enthusiasts have been talking about and promising the emergence of the smart, connected home. They have foretold a home connected by multitude of sensors, monitoring applications such as HVAC, home security, and even the health of the inhabitants, and all controlled remotely over the web via a smartphone or a tablet.
In the semiconductor industry, precision testing is key to ensuring proper functionality and quality. Two types of testing are traditionally performed: 1) wafer testing 2) chip set testing Both types of tests require the use of relays with fast switching speed to carry various types of signals. Test boards are designed with as few as two relays or as many as several thousand per board.
Test and measurement starts with standards. You have to have standards for mass, distance, charge, and time (plus a few others) so all standards refer back to those fundamental unit standards. But you don't measure volts in units of amps, kilograms, meters, and seconds, that requires something more convenient (i.e. measuring volts in volts).
When it comes to power system design, there are many options to consider that affect efficiency, availability and scalability. In most cases availability and scalability are the primary considerations for data centers. The data center is directly dependent on the critical power system, and electrical disturbances can have disastrous consequences....
When technology experts talk about the “Internet of Things,” it’s not an understatement. The sheer number of connected devices is growing at an unprecedented rate. IDC estimates mobile devices will total 1,832.3 million units in 2013 while predicting the total mobile phone shipments will reach 2,281.4 million units worldwide in 2017.
Measuring temperatures using infrared (IR) sensors without direct contact with an object, is the new paradigm in optimizing thermal monitoring and control. In this article we introduce the idea of this approach by taking advantage of new and very small IR temperature sensors available on the market.
Whether it’s a high-rise office tower or a manufacturing floor, Heating, Ventilation and Air Conditioning (HVAC) systems are designed for building occupants’ comfort. When systems operate at optimum levels, they’re energy efficient and go unnoticed. When they’re not, efficiency drops and complaints rise.
Perhaps no business service is more critical than telecommunications; reliability and quality of a phone system are absolute requirements. Over the past decade, internet-based VoIP (voice over internet protocol) has taken its place as a viable means of communication for individuals....
In the last few months I’ve been writing about various efforts of the government – both on the local and federal level – to leverage our consumer technologies to learn about our driving habits, cellular records, and, in the event of cyber attack, access to email records. Taken in totality, one could be highly suspicious that virtually anything and everything about our lives is accessible....
Two industry megatrends are reshaping the way we design and deploy networks and compute (i.e. datacenter servers). The first is Network Functions Virtualization (NFV) with the goal of moving functions such as content distribution, firewalls and base station controllers from proprietary hardware to standard, low cost servers.