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Industry News

NEW LITERATURE

NEW LITERATURE PRODUCT CATALOG This 132-page catalog offers information and specifications on the company's full line of RF inductors, power inductors, EMI/RFI suppressors, transformers and other specialty products. Industry-standard, circuit solution and application-specific components are detailed as well as a number of new products. API Delevan Inc., East Aurora,...
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NEWS FROM WASHINGTON

NEWS FROM WASHINGTON Recent decisions made at the US Air Force Electronic Systems Center, Hanscom Air Force Base, MA, and within the Department of Defense (DoD) have had positive effects on the DoD's overall effort to modernize its air traffic control (ATC) systems. The completion of the Electronic Systems...
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The Bookend

THE BOOK END Flip Chip Technologies John H. Lau McGraw-Hill 565 pages; $89 ISBN: 0-07-036609-8 Of the three popular chip-level connection technologies, flip chip provides the highest packaging density and performance, and the lowest packaging profile. Unfortunately, it is also the least understood. This book deals with classical solder-bumped...
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A DUAL-BAND ANTENNA COUPLER FOR CELLULAR AND PCS APPLICATIONS

A dual-band antenna coupler that can combine dual antennas into a single cable to the base station and then separate them again to be fed to their repective processing equipment
PRODUCT FEATURE A DUAL-BAND ANTENNA COUPLER FOR CELLULAR AND PCS APPLICATIONS REACTEL INC. Gaithersburg, MD In today's fast-growing cellular phone systems throughout the world the amount of congestion, especially in urban areas, is becoming a significant issue. Major system providers are scrambling to find adequate solutions to the problem....
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A SINGLE CABLE FOR BASE STATION MAIN FEEDER AND JUMPER APPLICATIONS

A 7/8 inch cable that has the efficiency of a main feeder cable but the bending and flexing capabilities of a typical jumper cable
PRODUCT FEATURE A SINGLE CABLE FOR BASE STATION MAIN FEEDER AND JUMPER APPLICATIONS ANDREW CORP. Orland Park, IL Wireless communications rely on coaxial cable transmission lines to link tower-mounted antennas to base station radio equipment. The traditional way to form this link is to use a main feeder cable...
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HIGH PERFORMANCE, LOW COST, SURFACE-MOUNT QUADRATURE COUPLERS

This month's cover features a high performance, low cost, surface-mount quadrature coupler developed using Blue Cell technology
COVER FEATURE HIGH PERFORMANCE, LOW COST, SURFACE-MOUNT QUADRATURE COUPLERS BLUE CELL TECHNOLOGY, A FAMILY MEMBER OF MINI-CIRCUITS Brooklyn, NY As system requirements increase, the demands placed on passive components also continue to rise in an effort to meet ever-increasing consumer demands. Industry is demanding higher performance in smaller footprints...
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A DUPLEXER, COMBINER AND DISTRIBUTION AMPLIFIER FOR WIRELESS APPLICATIONS

A new duplexer assembly designed for the stringent requirements of today's wireless base stations that makes use of the considerable performance advantage of high Q ceramic resonators
PRODUCT FEATURE A DUPLEXER, COMBINER AND DISTRIBUTION AMPLIFIER FOR WIRELESS APPLICATIONS FSY MICROWAVE INC. Columbia, MD Today's wireless base stations operate in a duplex mode and require a duplexer at the antenna to provide low insertion loss and high power capabilities in the transmit mode and low noise amplification...
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BROADBAND DC TO 4 GHZ DIGITAL ATTENUATORS WITH HIGH ACCURACY

Low cost two-, three- and five-bit digital attenuators that offer the ability to control signal strength wile maintaining signal integrity in the transmit and receive paths of wireless systems
PRODUCT FEATURE BROADBAND DC TO 4 GHZ DIGITAL ATTENUATORS WITH HIGH ACCURACY HITTITE MICROWAVE CORP. Chelmsford, MA Control of signal strength while maintaining signal integrity in the transmit and receive paths of wireless systems has always been a concern of RF design engineers. A family of seven low cost...
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HARMONIC TUNING OF POWER TRANSISTORS BY ACTIVE LOAD-PULL MEASUREMENT

A powerful and affordable tool for nonlinear on-wafer measurements in the 0.5 to 18 GHz frequency range that is useful for designing high efficiency power amplifiers for mobile communications
TECHNICAL FEATURE HARMONIC TUNING OF POWER TRANSISTORS BY ACTIVE LOAD-PULL MEASUREMENT Abstract: A nonlinear network analyzer combined with an active multiharmonic load-pull system is described. Data acquisition uses an HP 71500 microwave transition analyzer (MTA) and force/sense bias supplies. Complete tuning and monitoring of the incoming and outgoing signals...
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THERMAL DESIGN CONSIDERATIONS FOR WIDE BANDGAP TRANSISTORS

The effect the number of gate fingers, gate geometry and epitaxial layer thickness has on the peak junction temperature of high power gallium nitride and silicon carbide transistors
TECHNICAL FEATURE THERMAL DESIGN CONSIDERATIONS FOR WIDE BANDGAP TRANSISTORS Abstract: The peak junction temperature of a transistor is an important factor in determining its lifetime and output power degradation over time. Many design parameters determine the temperature rise in the semiconductor, including the transistor performance, semiconductor material and device...
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