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Industry News

A Multi-octave, Open-boundary, Quad-ridge Horn Antenna for Use in the S- to Ku-bands

This article introduces a new antenna design to be used in anechoic chambers as a source antenna for 3D pattern measurements. When measuring 3D patterns, the receiving antenna in the anechoic chamber must be able to sense the two orthogonal components ...
In a previous publication, 1 the author introduced a new dual-ridge horn that corrected the pattern problems of the traditional dual-ridge horn antenna. 2 All the parameters of this new horn, shown in Figure 1 , were measured and it was tested for use as an EMC immunity and...
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MicroMetrics Expands Epitaxial Services

MicroMetrics Inc. , a manufacturer of semiconductor devices for commercial and military communications, announced the expansion of its epitaxial growth and coating services for the semiconductor fabrication market. The newly expanded Londonderry, NH facility now includes seven Gemini Epi reactors. This dedicated business unit supports the growing of three,...
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An Efficient, Interactive Optimization Solution for Analog and RF Design

Optimization has been applied to circuit design for decades. IBM pioneered circuit simulation-based optimizer research in the 1960s and ’70s. In the 1980s, the University of California at Berkeley extended the research with more exotic algorithms and interactivity with programs such as DELIGHT and ECSTACY. During the same period,...
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Anechoic Chamber Measurement Improvement

The well known and widely used "Termination-VSWR" method, used to measure the reflectivity of an absorber wall in an anechoic chamber, has been considerably modernized with the help of new vector network analyzers (VNA) and personal computers (PC), taking advantage of fast sweepers or synthesizers and of the time-domain...
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Silicon-on-Sapphire Disrupts RF Switch Market

In its latest Insight report, "Silicon-on-Sapphire Switches for Handsets: Stopgap or Disruptive Technology?," Strategy Analytics , the research and consulting company, evaluated CMOS silicon-on-sapphire (SoS) RF switches and found that SoS has begun to disrupt established approaches to transmit-receive (T/R) switching in multi-mode, multi-band cellular handsets. Peregrine Semiconductor has...
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An Enhanced Electromagnetic Simulation Tool

When EM engineers use design and modeling packages they want ease of use, reliability and, most importantly, the ability to design new products that meet the desired purpose quickly and effectively. These were the main considerations when Flomerics developed MicroStripes 7, together with the aim of ‘bringing electromagnetic simulation...
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2006 Connector, Cable and Cable Assembly Survey

This is the fourth survey of connectors, cables and cable assemblies sponsored by Microwave Journal. We plan to update it annually with continued industry support and participation.
We are very pleased to offer this updated survey of companies providing connectors, cables and cable assemblies. Seventy-four companies responded to our request for information this year, which is an increase from the 68 companies in last year’s survey. In addition, 15 of last year’s participants have updated their...
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