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Industry News

Workshops & Courses

Workshops & Courses Advanced RF Power Amplifier Techniques Topics: Theory and design of RF power amplifiers, both for mobile and basestation applications in modern communications systems. In-depth treatment of PA design, PA modes, envelope power management and linearization techniques. Site: Nice, France Dates: February 11-14, 2002 Contact: CEI-Europe, PO...
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Erratum

Erratum In "A Method of Measuring Large-signal S-parameters of High Power Transistors," a technical feature by Seok Kyun Park, Ik Soo Chang, Yun Seo Choi, Jun Won Huh and Young Kim that appeared in the August issue of Microwave Journal , Equations 4, 13 and 14 contained errors. The...
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News From Washington

News From Washington Demand for More Precise Reconnaissance and Targeting Equipment The 1991 Desert Storm air offensive over Iraq demonstrated the value of sophisticated aircraft, equipped with electro-optical (EO) systems, capable of locating and designating a wide range of targets by day or night. However, during the 1999 Kosovo...
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International Report

International Report Lüneburg Chooses R & S Law Enforcement TETRA Solution The regional administration of Lüneburg, Lower Saxony has awarded Rohde & Schwarz (R & S) subsidiary R & S Bick Mobilfunk GmbH a contract covering the supply of a terrestrial trunked radio (TETRA) standard ACCESSNET® - T mobile...
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The Commercial Market

The Commercial Market Fiber Optics to be Bright Spot in Future of Network Cabling With a compound annual growth rate (CAGR) of 23 percent through 2005, fiber-optic cabling is a technology with a bright future, according to a report, "Copper, Fiber & Wireless: How Will We Hook Up?," from...
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The Book End

The Book End Transmission Lines and Wave Propagation P.C. Magnusson, G.C. Alexander, V.K. Tripathi and A. Weisshaar CRC Press LLC 519 pages; $89.95, £59.99 ISBN: 0-8493-0269-2 This is the fourth edition of this book. To electrical engineers, a transmission line is a distributed parameter physical system, one in which...
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A Hardware Multichannel Simulator for Wideband Wireless Systems

Introduction to a wideband multichannel simulator with eight fading channels, 70 MHz RF bandwidth and spatial channel modeling
Product Feature A Hardware Multichannel Simulator for Wideband Wireless Systems Elektrobit Kauniainen, Finland Hardware-based multipath fading simulators have traditionally been used to generate up to two simultaneous fading channels. Mobile network testing and future wireless applications like geolocation, smart antennas and multiple input multiple output (MIMO) systems, however, require...
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Stainless Steel Coaxial Cable with Medium Loss at 36 GHz

Development of a high performance stainless steel coaxial cable with medium loss at 36 GHz
Product Feature Stainless Steel Coaxial Cable with Medium Loss at 36 GHz Fig. 1 Loss per 100 ft. vs. frequency. Anyone who has tried to use copper cable for high frequency connections in high stress environments knows that it does not hold up very well for long. Attempts to...
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Optimum Design for Linearity and Efficiency of a Microwave Doherty Amplifier Using a New Load Matching Technique

Presentation of a new design technique to match the complex load impedance of a Doherty amplifier for various power levels using offset transmission lines at the load modulation network
Technical Feature Optimum Design for Linearity and Efficiency of a Microwave Doherty Amplifier Using a New Load Matching Technique A Doherty amplifier with full load matching circuits of the carrier and peaking amplifiers at both low and high power levels is demonstrated for the first time. In the circuit...
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A High Efficiency, Low Cost Silicon Bipolar GSM Dual-band PA Module

Presentation of the design and measurement data for a PA module using silicon RF-IC bipolar chip technology on a simple ceramic substrate
Technical Feature A High Efficiency, Low Cost Silicon Bipolar GSM Dual-band PA Module T. Johansson, P. Lundin, J. Engvall and D. Uggla Ericsson Microelectronics AB Kista, Sweden U. Hagström Ericsson Microwave Systems AB Mölndal, Sweden As the wireless communication business continues to expand, there is great demand for reducing...
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