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Industry News

Positive Bias GaAs Multithrow Switches with Integrated TTL Decoders

This month's cover features positive bias nonreflective GaAs switches with integrated decoders that advance the state of the art in MMIC switching
Hittite Microwave Corp., Chelmsford, MA
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Positive Bias GaAs Multithrow Switches with Integrated TTL Decoders Hittite Microwave Corp. Chelmsford, MA Distribution and reception of digital, video and voice information has become an essential part of our daily routine. We use a network of fiber-to-RF cable to communicate with family, friends and coworkers via the Internet;...
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A 6 W MMIC Power Amplifier for 6 GHz Operation

A two-stage MMIC power amplifier fabricated using the compnay's mature GaAs self-aligned MSAG MESFET process
GaAsTEK, a unit of ITT Industries
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A 6 W MMIC Power Amplifier for 6 GHz Operation GaAsTEK, a unit of ITT Industries Roanoke, VA The current trend for microwave power amplifiers is higher power and efficiency without sacrificing good linear gain. Today’s circuit designer must satisfy these requirements while also meeting stringent size and cost...
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Cavity and Surface-mount Delay Line Filters for Feedforward Power Amplifiers

Delay line filters in cavity and surface-mount styles for enhanced performanced in feedforward amplifier appliactions
K&L Microwave Inc.
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Cavity and Surface-mount Delay Line Filters for Feedforward Power Amplifiers K&L Microwave Inc. Salisbury, MD In their quest for reduced levels of intermodulation distortion (IMD), power amplifier manufacturers utilize feedforward techniques to implement either multiple carrier power amplifiers or single wideband carrier power amplifiers. The feedforward technique relies on...
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A Small CDMA Module for Wireless PCS Handsets

An RF amplifier module utilizing established MMIC technologies and conventional surface-mount techniques that can be supplied in high volumes rapidly to allow longer run rates for an existing telephone platform
ANADIGICS
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A Small CDMA Module for Wireless PCS Handsets ANADIGICS Warren, NJ The rapid growth of wireless handsets has created pressure on RF design engineers to provide feature-rich, timely solutions that allow market success. Time to market from concept to volume ramping for production has become a key issue in...
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Miniature Tight-tolerance Chip Inductors

Single-layer ceramic chip inductors that utilize a photolithographic etching process to achieve good performance and repeatability with a low cost construction technique
Toko America Inc.
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Miniature Tight-tolerance Chip Inductors Toko America Inc. Mt. Prospect, IL Today’s trend toward smaller circuits and automated assembly is pushing component manufacturers to develop new and innovative ways to reduce the size and cost of their products while maintaining or improving performance. High frequency inductors traditionally have been a...
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Europe’s Wireless Futures

An overview of developments in Europe's key wireless technologies as well as a look at trends for the future
Stephen McClelland
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Europe’s Wireless Futures European technologies and market prospects continue to play a critical role in the wider picture of the worldwide wireless and mobile scene. This special supplement to Microwave Journal provides an overview of developments in Europe’s key wireless technologies and looks at trends for the future. Stephen...
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RF/Microwave Power Package Reliability: The Effects of Component Materials and Assembly Processes

The combination of predictive finite element modeling and empirical analysis of package component materials and assembly processes as a performance and reliability assessment of alumina ceramic insulator frames in RF/microwave power packages
Philip M. Fabis
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RF/Microwave Power Package Reliability: The Effects of Component Materials and Assembly Processes The mechanical performance and reliability of various Al 2 O 3 ceramics were evaluated with intended applications as insulator frames for RF/microwave power packages. Considering variations in base-flange material properties (CuW, CuMoCu), base-flange thickness (0.040", 0.020"), assembly...
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Design of High Gain Microstrip Antennas

Use of gain-enhancement techniques previously developed for conventional patch antennas to improve the performance of cavity-backed patch antennas
Frank Zavosh and James T. Aberle
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Technical Feature Design of High Gain Microstrip Antennas Frank Zavosh and James T. Aberle Please click here to view the pdf file of the Technical Feature  ...
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Microstrip Resonant Phase Shifters

The design of a continuously adjustable delay for the STM64 (OC192)-specified 10 GHz clock frequency and its integer multiples and submultiples to control different electro-optical devices in optical-fiber line-terminal equipment
Matjaz Vidmar
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Microstrip Resonant Phase Shifters Matjaz Vidmar University of Ljubljana Slovenia There are several possible designs for adjustable phase shifters (or adjustable delay lines) depending on the operating frequency, required bandwidth, power handling and technology used (mechanical, ferrite, PIN diode, varactor or I/Q modulator). This article describes the particular problem...
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Increased Accuracy of Absolute Group Delay Measurements

A two-step approach to measuring absolute group delay of frequency-translation devices that reduces ripple and increases accuracy to ±150 ps
My Le Truong
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Technical Feature Increased Accuracy of Absolute Group Delay Measurements My Le Truong Please click here to view the pdf file of the Technical Feature...
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