An Easy and Fast Solution to Simplify Subsystem Load Management in Wireless Applications By Philippe Pichot, Systems Engineering Manager, Texas Instruments Integrated power switches are increasingly being used in battery-powered systems to disconnect any unused subsystem. These include RF power amplifiers, wireless local area networks (WLAN) or Bluetooth® modules, LCD display, etc.
By Martin R. Johnson, ILLUMRA and Eugene You, EnOcean, Inc. Wireless, energy harvesting technologies are making waves in building automation and energy conservation controls because they overcome limitations of hardwired solutions and maintenance issues inherent to battery-dependent devices. This article will discuss the science behind wireless, energy harvesting technology and explain how to budget miniscule amounts of energy sufficient for managing building energy usage.
By Mark Forbes, Mentor Graphics Corporation As is well known, maximum RF coupling occurs when impedances on each side of the coupling match. A perfect match occurs when the impedances are identical and the Complex Matching Factor (CMF) is 0dB. When the CMF is 0db, the imaginary terms of the complex conjugate cancel, and the resistance is equal.
With all the new features consumers want in the cars they buy today, the number of automotive electronics, which require complex semiconductors, continues to increase. Q: “How do designers stay within their power budget and still remain competitive?” By Michael Haight, Freescale “I want it all” is often the desire for the car buyer.
By Suresh Ram, National Semiconductor Corporation There is a rising demand for accessible medical care. The world population is rapidly growing and aging, increasing the cost of healthcare. Medical practitioners need small energy efficient and cost effective diagnostic devices. Portable diagnostic equipment that improve quality of healthcare in a cost effective manner are highly desirable.
By Kowsik Guruswamy, CTO Mu Dynamics The networks of mobile operators are going through extreme transition. User-driven demand for new devices, more applications and services and faster upload and download speeds, have most mobile operators working round the clock just to keep their existing networks running.
By Tim Carey, Aeroflex Test Solutions Non-cellular technologies are increasingly being integrated into cellular terminals, and this has generated the need for test systems that comprise a number of different test platforms, which can make system integration both complex and costly. At the same time, there is pressure to increase test speed and, in combination with the proliferation of functional tests associated with the introduction of new standards, this further increases the costs.
By Thomas Dippon, Agilent Technologies When testing wideband RF components and systems, it is necessary to stimulate the device under test (DUT) with a wideband signal that is as close to the “real” signal as possible. For some measurements, wideband noise or a multi-tone signal might be appropriate.
By Iboun Taimiya Sylla, Texas Instruments The explosion of wireless technologies in recent years has allowed the emergence of several wireless standards in the industrial scientific and medical (ISM) band. With these new standards we are experiencing penetration of wireless applications in every segment of our daily lives.
By Byron Henderson, Mesh Dynamics Smart Grid networks are currently receiving tremendous government attention and funding. The US Department of Energy says the Smart Grid "would integrate advanced functions into the nation's electric grid to enhance reliability, efficiency, and security, and would also contribute to the climate change strategic goal of reducing carbon emissions.
By Malek Shahid, Senior Strategist, Wireless, Alcatel-Lucent By 2013, global mobile data traffic will exceed two terabytes a month1. Video streaming, social media applications and smartphone signaling are the chief culprits. This data tsunami will swamp mobile network architectures, and operators face the challenge of finding the right way to offload it.
By picoChip and Continuous Computing LTE is coming. It’s almost impossible now to pick up an article on network infrastructure without reading about it and how companies are working on towards the shift. The wireless networks in place today were primarily designed to support voice, a job that they actually do quite well and with plenty of capacity to spare.
Within the last few years, designers have established a solid powertrain foundation for hybrid vehicles (HEVs) and electric vehicles (EVs). All major auto manufactures see the hybrid and electric vehicle market as one continuing to enjoy steady growth. One major driving factor to the projected increased growth is the significant technology advances taking place that directly impact the HEV and EV power electronic systems.
By Kerry Johnson, QNX Software Systems Already, vehicle telematics services have been deployed in tens of millions of automobiles. Nonetheless, mobile services offered on smart phones and other consumer devices are growing at a far greater pace. A quick survey of these mobile services reveals that many offer significant utility to drivers or passengers; in fact, some are designed specifically for in-vehicle use.
By Chris Keeser, Cypress Semiconductor Corp. The other day I was driving to the local dump to drop off a load of trash carefully stacked into the back of the family minivan. Suddenly I noticed that the “trunk open” light came on. I quickly pulled over just as the rear hatch popped all the way open and the van began to empty my garbage bags all over the road.