density effects

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By: Plantronics     Published Date: Oct 18, 2013
Wireless technology surrounds us in the workplace, at home, and many places in between. Mobile phones, WiFi networks, wireless computer accessories, and cordless phones all use radio transmissions for wireless communication. Even devices not used for communication, such as microwave ovens and lighting systems, emit radio frequency energy that can impact wireless devices. In this crowded radio environment, two technologies have emerged as the standard for wireless voice communication in UC and enterprise applications.
Tags : plantronics, audio device technology, wireless technology, digital telecommunications, wireless headset success, influence deployment, analogue modulation, business conversations, dect, dect architecture, wireless technologies, bluetooth headsets, interference avoidance, roaming range, radio spectrum, channel sharing, density effects, wideband operation, wireless, telecom
     Plantronics
By: Mentor Graphics     Published Date: Apr 03, 2009
High Density Interconnect (HDI) is being used more often to meet the growing need for more complex designs in smaller form factors. Beyond some of the more obvious electrical effects of using smaller vias, there is also an impact to the power integrity of a board using HDI. This includes different effects of mounted inductances of decoupling capacitors, changes in plane performance due to reduction in perforation from chip pinouts, and the inherent plane-capacitance changes from using dielectrics of various thicknesses. This paper will examine and quantify these effects, using numerous design examples, including a large conventional through-hole design board that was reduced using HDI.
Tags : power integrity effects, mentor graphics, high density interconnect, hdi, chip pinouts, perforation, multilayer or build-up multilayer, bum, sequential build-up technologies, sbu, buried via holes, bvhs, dielectric materials, photosensitive, laser drilling, plasma drilling, microvia, plated through-holes, pths, power distribution network
     Mentor Graphics
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