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Field-to-Lab Testing Equals Better Real-World Performance for Mobile Devices

May 13, 2011 11:15 am | Comments

This case study will describe an application of the Azimuth Systems Field-to-Lab (FTL) Solution by a market-leading handset manufacturer. Real-world drive testing is very expensive; lab testing is much less expensive and faster -- provided that the real world can be emulated with sufficient fidelity.

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Will Femtocells or Wi-Fi Save Mobile Networks from the Data Deluge?

May 12, 2011 6:30 am | Comments

People love their smartphones. The convenience of having access to the Internet anywhere and at any time is extremely compelling. In an effort to stoke the fires of demand, the industry is actively improving the offerings. For example, new smartphones now have stunningly high resolution screens to make it more compelling for people to watch videos – and consume mobile data.

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RF/IF Amplifiers and VGAs Cover The Entire Signal Chain

May 12, 2011 6:23 am | Comments

By Ashraf Elghamrawi, Analog Devices ( www.analog.com ) The amplifier is one of the most versatile building blocks used in RF/IF signal chains today. They are commonly used throughout designs to overcome signal losses incurred from passive mixers, filters, baluns, and other passive elements. Since these losses occur across the entire signal chain five main families of amplifiers have been developed by Analog Devices.

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OpenVPX Beamforming System Case Study from Pentek

April 27, 2011 7:59 am | Comments

Beamforming is a signal processing technique that utilizes an array of sensors to achieve directionality, increase the strength of transmitted signals and improve the quality of received signals. Beamforming is extensively used in communications, radar, direction finding, countermeasures, weapons systems, oil and mineral exploration, and medical imaging and treatment.

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Custom IF SAW Filters for Sirius Satellite Radio Receivers

April 13, 2011 11:08 am | Comments

Problem Solvers - Filters By Jidong Dai, Ph.D., Mike Ferguson, Frank Perkins RFM, and Bob Dockemeyer, Delphi Sirius Satellite Radio broadcasting utilizes highly elliptical orbit (HEO) satellites, resulting in superior coverage over North America where the service is targeted. However, even with superior coverage, there are still areas where the satellite signals are blocked, like city centers with many skyscrapers, overpasses, and areas with strong interference signals.

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TECH EXCHANGE

April 12, 2011 12:27 pm | Comments

Welcome to Tech Exchange on Test & Measurement! Each month this new section will focus on a different product category and will include a brief interview with a representative from a leading OEM. This Month: Vivek Vadakkuppattu, Product Manager for Azimuth Systems Q: What were some of the most significant technological developments in the Test & Measurement industry in 2010? At Azimuth Systems, we continued to see the trend of greater focus being put on real world-centric performance testing in 2010.

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Emerging Switch Developments for Embedded WLAN Solutions in Smart Phones

April 12, 2011 11:39 am | Comments

By Kevin Walsh, Skyworks Solutions, Inc. This article will elaborate on two key trends that are facilitating the growth of embedded WLAN communications in smart phones and other mobile connected devices: 1. The development of pHEMT wafer level chip scale packaging (wlCSP), alternatively known as flip chip or bumped die.

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Use Oscilloscopes to Monitor Multiple Protocols

April 11, 2011 12:32 pm | Comments

By Roland Gamper, LeCroy Corporation Regardless of the system topology and application domain, the development, maintenance and monitoring of electronic system architectures using mixed protocols requires tools able to straddle several busses, at various speeds and with different line characteristics.

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Limitless Wireless: Hybrid Lithium Batteries Can Power Remote Wireless Sensors for over 25 Years

April 11, 2011 11:41 am | Comments

By Sol Jacobs, Tadiran Batteries Rapidly evolving technology and wireless communications have unlocked the dynamic growth potential of remote wireless sensors, resulting in growing demand for hybrid lithium batteries that combine exceptional long life with the ability to handle high current pulses.

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Powering Toll Tags

March 29, 2011 5:31 am | Comments

Case Study: Customized Coin Cell Holders for Automotive Toll Tags Challenge A leading manufacturer of toll tags recently approached MPD looking for a new battery holder to replace soldered-in batteries. The customer had two main problems with their current battery solution.

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Selective Data Replication between Embedded and Enterprise Systems

March 15, 2011 11:57 am | Comments

By Steve Graves, McObject Among wireless systems developers, database management system (DBMS) replication is typically associated with high availability (HA). Deploying real-time DBMS software on a master node, with multiple synchronized copies of that database running on standby nodes, and automatic failover to one of these replicas in the event of the master node’s failure, provides for instant recovery and maximum system up-time.

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Power Saving Techniques in GSM-GPRS-EDGE Handsets

March 10, 2011 10:01 am | Comments

By Dr. Oleksandr Gorbachov, CTO, RFaxis, Inc. With over 600 million new mobile phone handsets shipped each year, mobile phones have become an integral part of our daily lives. As more and more new features are being demanded in smaller and thinner handset form factors, excessive current consumption and poor battery life become real issues for the mobile phone user.

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Bluetooth Low Energy Creates New Testing Requirements

February 23, 2011 11:26 am | Comments

By Angus Robinson, Anritsu Company By eliminating wires and simplifying connections between devices, Bluetooth wireless technology influences people’s lives in many ways. Mobile phones, PCs, motor vehicles and portable music players now have the ability to be connected quickly and easily whenever we want.

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RF Envelope Detection Enables Drain Modulation Systems

February 14, 2011 10:14 am | Comments

By Eamon Nash and Ashraf Elghamrawi, RF Group, Analog Devices, Inc. Improving the Power Added Efficiency (PAE) of High Powered Amplifiers continues to be a challenging goal in a Wireless equipment industry that is struggling to deliver cheaper, smaller equipment that consumes either less electricity or in the case of portable devices, less battery current.

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Design Considerations for Wireless Devices using Energy Harvesting

February 11, 2011 10:06 am | Comments

Mark Grazier, Third-Party Program Manager, Low-Power RF, Texas Instruments The key to optimizing energy scavenging devices with low-power wireless systems is to take advantage of some very important but sometimes forgotten best practices. These practices are used by system architects designing wireless sensor systems to reduce the demand on the energy harvesting components in the system.

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