Industry News

A CAD Tool Utilizing Fast Hybrid MM/FE/MoM FD Techniques

A three-dimensional electromagnetic-based CAD software tool is featured on this month's cover
To meet the rapidly increasing demand for advanced microwave components and antennas in wireless terrestrial and satellite-based communications, accurate and efficient CAD tools are critical. Due to efforts made during the 1990s - the decade of global 3D electromagnetic (EM) field solvers - the task of accurate analysis of...
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A Broadband Hybrid Solid-state and TWT Amplifier

Development of a broadband microwave amplifier for testing in the 800 MHz to 18 GHz frequency range
Test applications that require microwave power from 1 to 18 GHz are usually addressed by two amplifiers, a solid-state unit to cover the low frequency range and a traveling-wave tube amplifier (TWTA) for the higher range. The input signal must be switched between the two amplifiers and, if there...
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A Compact Monopulse Feed for Tracking Antennas

Introduction to the requirements for a compact monopulse feed for use in a Cassegrain antenna configuration
With the steady improvements in tracking radar technologies over the past twenty years, the diameter requirements for antennas has been reduced to match the improvements in transmitter power and receiver sensitivity. This has led to a need for shorter feeds for use in Cassegrain configurations. Antenna feeds have recently...
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The Design of Bandpass Filters Considering Frequency Dependence of Inverters

In general, practical inverters have frequency-dependent impedance or admittance. The equivalent circuits of several widely used inverters are investigated, consisting of ideal inverters plus frequency-dependent real and/or immittance parts. One of the...
By using impedance or admittance inverters, microwave bandpass filters can be designed more conveniently with only one kind of resonator. Theoretically, the inverters have to be frequency independent. However, this is not true for practical cases. One of the most serious degradations in frequency response of a bandpass filter...
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<I>Microwave Journal</I>'s second annual overview of microwave technology research projects currently being investigated by European academic institutions and commercial organizations
Today's investment in and commitment to meaningful, commercially viable research will determine the shape and prosperity of tomorrow's microwave industry. Following its introduction in 2001 the second Microwave Journal guide to European research projects highlights the studies being undertaken by academic and commercial establishments to develop the innovations that...
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SAW Voltage-controlled Oscillators

Presentation of applications that use voltage-controlled surface acoustic wave oscillator technology to provide high performance telecom solutions
Voltage-controlled surface acoustic wave (SAW) oscillators (VCSO) have been used for many years in both commercial and military applications. The low phase noise allows frequency multiplication to higher frequencies for use as sources, such as local oscillators in radar and other microwave systems. The excellent tuning linearity provides outstanding...
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Thales Launches CATS

French-based contractor Thales Airborne Systems used the 22-28 July Farnborough International Air Show to showcase its latest airborne electronic warfare (EW) product, the Compact Airborne Threat Surveyor (CATS). Operating within the E- to K-band (2 to 40 GHz) frequency band, CATS is a combined radar warning, electronic support (ES)...
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Rosoboronexport Promotes Detachable COMINT System

The Russian Federation's Moscow-based Rosoboronexport export agency is offering a detachable communications intelligence (COMINT) system that can be easily incorporated aboard any type of utility helicopter. Operating within the 30 to 2000 MHz frequency band, the package comprises an onboard equipment set (made up of four laptop computer-equipped workstations)...
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Indra Reveals New Air Defence Radar

Spanish contractor Indra has launched a new 2-D air defence surveillance radar under the trade name RAVEN. Operating within the I/J-band (8 to 20 GHz) frequency range, RAVEN is described as being a frequency modulated continuous wave (CW) type of equipment. It comprises an antenna/antenna drive assembly, a dual...
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