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Industry News

WLAN Switch… or Just “Switch”?

According to In-Stat, the enterprise WLAN equipment market is at an interesting crossroads. While Symbol and a variety of start-up vendors have pioneered an overlay “WLAN switch” architecture for centralized management of so-called “thin APs,” they are now being increasingly challenged in the market by large Ethernet switch vendors,...
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ZigBee Alliance Surpasses 150 Members

The ZigBee™ Alliance, an association of companies working together to enable wirelessly networked monitoring and control products based on an open global standard, announced 20 new member companies, bringing its total membership to more than 150 companies. New member companies include: Contec Co. Ltd.; Creston Electronics Inc.; Digital Sun...
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The Book End

Radio-Frequency and Microwave Communication Circuits Analysis and Design, Second Edition Devendra K. Misra J Wiley Interscience 626 pages; $135 ISBN: 0-471-47873-3 Wireless technology continues to grow at a tremendous rate, with new applications still reported almost daily. The second edition of this book maintains the earlier approach of a...
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Raytheon Affordable AGBR Successfully Completes Testing

Raytheon Co. Affordable Ground Based Radar (AGBR) successfully completed all planned system performance testing recently. The final milestone is the culmination of more than four years of working with the Marine Corps to find the best solutions, utilizing engineering innovation, development, integration and test activities sponsored by the Office...
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RFID in Retail: a Frustrating Disconnection

RFID supply chain mandates launched by a few big retailers such as Wal-Mart and Target are now well documented and understood. But many other retailers are finding problems and frustrations when they try to apply RFID in the same way. Why? Because, says ABI Research analyst, Sara Shah, “There...
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High Performance L- and S-band SMT Harmonic Filters for RF Applications

A new class of microstrip surface-mountable harmonic (low pass) filters constructed using thick film technology has been developed at IMS Inc. They are designed for use wherever suppression of harmonics or other spurious signals generated by transmitters operating in a host of different RF applications is required. Such applications...
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EM-based Design Software for Spiral Inductors and Transformers

A spiral is a very important form of planar or multilayer inductor or transformer. Previous designs of spiral components, however, have relied heavily on approximate quasi-static models and verification using electromagnetic field solvers. Recently, an application-specific graphical user interface has been created for use with the IE3D high performance...
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A 60 W RF Transistor in a Cost-effective Plastic Package for 2 GHz Cellular Applications

Cellular radio systems such as GSM Edge, N-CDMA or W-CDMA are seeing increasing demand in today’s wireless infrastructure. As volume production increases, equipment manufacturers require low cost solutions with good performance from their component suppliers. Freescale Semiconductor has pioneered the use of high power plastic packages for high frequency...
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Standard 5 V Medium Power InGaP Darlington Amplifiers

Wideband Darlington gain blocks have become a workhorse for RF wireless and wireline applications. The broadband linearity and direct-coupled performance has found a multitude of commercial design-ins for base station pre-drivers, repeater-pole transceivers, fiber optic transceivers, CATV and instrumentation systems. One of the drawbacks of existing Darlington amplifier solutions,...
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Silicon-based Surface-mount I-Q Modulators/Demodulators for RFID and Wireless Applications

Two new surface-mount I-Q modulators/demodulators have been added to the “RFID by M/A-COM” series of products that are designed for RFID, wireless handset and base station applications. The MA4IQP900L-1291T and the MA4IQP900H-1291T HMIC I-Q modulators/demodulators are compact and highly functional devices using low and high barrier silicon Schottky diodes,...
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