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Industry News

International Report

International Report AMS Snares ATC/Airport Business The Anglo-Italian joint venture company Alenia Marconi Systems (AMS) has announced new contracts with respect to the provision of instrument landing systems (ILS) for the US Air Force, a Doppler weather radar for South Korea's Meteorological Administration and two Advanced Surface Movement Guidance...
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The Commercial Market

The Commercial Market New 3G Wireless Infrastructure Study Published Forward Concepts has announced the publication of what is probably the definitive in-depth study of the market and technology of the worldwide cellular infrastructure. The new report, "Wireless Infrastructure Technology and Markets: The Challenge of 3G," details infrastructure markets through...
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The Book End

Wireless Local Loops - Theory and Applications Peter Stavroulakis, Editor John Wiley & Sons Inc. 289 pages; $110 ISBN: 0-471-49846-7 This book presents the theoretical aspects and various practical applications of a new medium of transmission called wireless local loops (WLL) that is making a major impact in the...
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Controlled Expansion Alloys for High Reliability Packaging Solutions

The trend towards faster and higher frequency communications is driving the search for high reliability packaging solutions that satisfy ever more demanding performance requirements. However, when utilizing the packaging materials commonly available today, designers often come up against thermal, mechanical and/or cost barriers. To meet these demands, Osprey Metals,...
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HFSS Software for Next-generation Design

When HFSS™ was introduced in February 1990, it created a new era in microwave design. Prior to this event, microwave design was limited to simple analyses and cut-and-try methods. With HFSS, engineers could conveniently build, analyze and refine three-dimensional (3D) microwave prototypes using their computers. For the first time,...
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A 28 GHz 2 x 16 Antenna T/R Switch Matrix

Fabricating a high performance 2 x 16 transmit/receive (T/R) switch to feed a millimeter-wave Rotman or Lunenburg lens antenna array has in the past been a complex and space-consuming configuration. A new T/R switch assembly has been designed that features a compact, unique package containing a 2 x 16...
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New Enhancements for the GENESYS Software Suite

All 15 modules of the GENESYS RF/microwave design software suite have recently been enhanced. For 17 years, Eagleware has worked with thousands of customers worldwide to continuously upgrade its suite of synthesis, simulation and design environment tools. Major enhancements in the current release include new models, an antenna pattern...
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A Wideband and High Gain Microstrip Four-slot Antenna Array

A numerical simulation and an experimental implementation of a cross-shaped, microstripline-fed, printed, four-element slot antenna array are presented in this article. The proposed antenna, with a relative permittivity of 4.3 and a thickness of 1.0 mm...
Since microwave communications equipment is low profile and light weight, low profile and light weight antennas are essential. A microstrip antenna has been developed to meet this requirement. Microstrip antennas offer a conformal structure, low cost and ease of integration with solid-state devices, and are low profile and lightweight....
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A Low Cost Pencil-beam Microstrip Antenna at 76.5 GHz

This article describes the design of a 76.5 GHz microstrip antenna using a simple waveguide distributor. This type of antenna permits any complicated radiation pattern to be obtained. It can be used as part of the transmit/receive module for a compact ...
The design of a millimeter-wave antenna with a pencil-beam pattern is complicated when using a slotted waveguide and results in unacceptable dissipating losses, as high as 8 to 10 dB for a microstrip (RT duroid or Cu/PTFE substrate) distributor. This is why most submillimeter-wave antenna designers avoid traditional VHF...
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Development of an Advanced Airborne Precipitation Radar

Radar has been used for observation of weather since the 1940s. 1 Advances in weather radar include the incorporation of Doppler capability, which allows measurement of wind velocity, and the use of multiple polarizations, which enhance rainfall estimation and provide the ability to discriminate between types of hydrometeors, such...
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