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Industry News

The Book End

Introduction to WLLs: Application and Deployment for Fixed and Broadband Services Raj Pandya Arcadia Publishing 243 pages; $79.95 ISBN: 0-471-45132-0 The primary objective of this book is to provide a system level view of the technical, planning and deployment aspects of wireless local loop (WLL) systems. It also includes...
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Addressing High Performance Design

To save time and money, HFSS 3D electromagnetic-based virtual prototyping is replacing the classical build-and-test design. By generating high accuracy, physics-based models, HFSS improves engineering productivity, reduces development time and better assures first-pass design success. The high performance electronics industry counts on HFSS™ to provide precision virtual prototypes for...
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A Quad-band GSM/EDGE PA Module

A new quad-band/dual-band power amplifier (PA) module has been developed for use with dual-mode GSM and EDGE handsets. The RMPA1852 PA module was designed to deliver the highest power efficiency in EDGE mode without sacrificing performance in GSM mode. The product achieves 27 percent power-added efficiency (PAE) in EDGE...
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Estimation of the Optimal Location of Metallic Objects Inside a Mobile Phone

lanar near-field measurements of the electric field components are used to determine where to place external components, such as a loudspeaker or camera, without significantly affecting the radiated field. The location of the peak value of the electric...
The planar inverted-F antenna (PIFA) is widely used in cellular phones, primarily due to its compactness and size. 1 The demand for communication devices for personal communication systems has led to a constant search for ways to reduce the cellular phone dimensions. Applications, such as loudspeakers, cameras, etc., are...
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Innovative Thin Film Techniques to Eliminate Faulty Wire Bonds and Improve High Frequency Circuit Densities

Thin film interconnects are a standard circuit technology used in high frequency design components and subsystems where transmission line widths of .005" and under are critical to performance as well as high power applications where thermal conductivity is of concern and materials such as beryllium oxide and aluminum nitride...
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Secure Personal Communications on the Battlefield

The gulf between the technically possible and the practical is difficult to bridge.
The development of Soldier Modernization Programs (SMP) across NATO and other countries poses challenges — not only through the extension of voice and data communications down to each infantryman, but the parallel need to define the level of security required to protect the information sent. Communications security for individual...
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