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Industry News

News From Washington

News From Washington ITT Industries Win $77 M Contract ITT Industries Inc. has been awarded a $77 M firm fixed price contract to provide operations and maintenance support to the US Military Command and Control Switching System (CCSS) at 19 locations in five countries worldwide. ITT will provide support...
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International Report

International Report Boeing Wins NATO AWACS Upgrade Programme US aerospace contractor Boeing has been awarded a $24 M contract to procure long-lead items for use in NATO's Airborne Warning and Control System (AWACS) aircraft Mid-Term Modernisation Programme (MTMP). Proposed MTMP elements include the introduction of flat panel displays for...
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The Commercial Market

The Commercial Market WLAN Vendors Search for New Ways to Increase Profits According to Cahners In-Stat Group, with the recent excitement over the WLAN market, it has been assumed that growing revenues would accompany strong growth in shipments. But prices were never expected to fall as fast as they...
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The Book End

The Book End Nano- and Microelectromechanical Systems Sergey E. Lyshevski CRC Press 338 pages; $89.95, £34.99 ISBN: 0-8493-916-6 This book is designed for a one-semester course on nanoelectromechanical and microelectromechanical systems (NEMS and MEMS). It builds the theoretical foundation needed to develop, analyze and prototype NEMS and MEMS, their...
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Phase Invariant Attenuators

Use of phase invariant attenuator to change the amplitude in the processing of a microwave signal with minimal impact to the phase characteristic
Product Feature Phase Invariant Attenuators G.T. Microwave Inc. Randolph, NJ The function of a phase invariant attenuator is to change the amplitude in the processing of a microwave signal with minimal impact to the phase characteristic. The theory of operation is that when a signal reaches its maximum attenuation,...
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Electronically Tunable Thin Film Filters for Microwave Applications

A new line of electronically tunable RF filters is featured
Cover Story Electronically Tunable Thin Film Filters for Microwave Applications Paratek Microwave Inc. Columbia, MD Interference in wireless systems increases bit error rate (BER) and decreases the reliability and quality of service of the communication network. Interference mitigation requires filtering of the transmitted and received energies to reject all...
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Dual Mode Broadband Hybrids: Theory and Experiment

Development of a theoretical approach to the control and optimization of the major parameters of side and top wall hybrid couplers
Technical Feature Dual Mode Broadband Hybrids: Theory and Experiment Alex D. Lapidus Microwave Communications Company International Inc. Valencia, CA A theoretical approach to both side and top wall (hybrid) couplers based on strong experimental work is developed. Broadband operation, related to dual mode propagation through the coupling section, is...
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Implementation of a Neural Network HEMT Model into ADS

An approach for implementing a neural network algorithm to develop a large-signal HEMT model into ADS
Technical Feature Implementation of a Neural Network HEMT Model into ADS Neural network algorithms have been applied to various areas of engineering and computer science. A high electron-mobility transistor (HEMT) large-signal model has been implemented in the Advanced Design System (ADS) software package using a multilayered neural network. The...
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A Broadband Planar Isolator Using Coupled Microstrip Lines on a Magnetized Gyrotropic Substrate

Introduction to a new type of broadband isolator using nonreciprocal coupling between two microstrip lines fabricated on a magnetized gyrotropic substrate
Technical Feature A Broadband Planar Isolator Using Coupled Microstrip Lines on a Magnetized Gyrotropic Substrate A new type of broadband isolator, using coupled microstrip lines on a transversely magnetized gyrotropic substrate, is proposed in this article. The nonreciprocal coupling between two microstrip lines can be used to create an...
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Aluminum Nitride vs. Beryllium Oxide for High Power Resistor Products

Extensive study on the use aluminum nitride as an alternative to beryllium oxide for high power resistor and termination applications
Technical Feature Aluminum Nitride vs. Beryllium Oxide for High Power Resistor Products Michael Kettner, Patrick Biebersmith, Nelson Roldan And Balram K. Sharma Florida RF Labs Inc. Stuart, FL For the past few decades, beryllium oxide (BeO) has been the main substrate material used for RF resistors and terminations for...
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