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Industry News

A Solid-state, 1 to 2 GHz, 1 kW Amplifier

Until recently, traveling wave tube (TWT) technology was the only technology capable of meeting the bandwidth and power requirements of high power L-band applications such as power testing radar components and for military/automotive RF immunity testing. Solid-state technology can, however, offer key performance advantages over TWT technology, particularly with...
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Millimeter-wave Satellite Remote Sensing

When the Hubble Satellite was launched in 1990, the joke was that it was the third best optical satellite in space, but that the two better ones were pointed in the opposite direction. While it is still true today that more satellites are looking downward than upward, satellites are...
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HITTITE DEBUTS PRODUCTS AT RWS 2006

Hittite Microwave Corp. showcased a montage of new products at RWS 2006, held January 17-19, 2006, in San Diego, CA. Among the products on display included model HMC-C026, a GaAs MMIC distributed power amplifier connectorized module that is ideal for military EW/ECM, space, test equipment, wideband telecom, microwave radio...
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Experimental Investigation of a Power Divider Based on Microstrip and Metamaterials with L-C Lumped-elements

One-dimensional metamaterials, using L-C lumped-elements, have a broad left-handed passband, with anti-parallel phase and group velocities. Power dividers, with symmetric and asymmetric structures, are proposed. They are composed of conventional micros...
Metamaterials ,1,2 with simultaneous negative permittivity and permeability, are promising materials for new types of microwave components. In metamaterials, the waves are propagating with anti-parallel phase and group velocities, as demonstrated by backward waves. 3 Recently, an extended transmission-line approach to metamaterials, low loss and broadband structures was proposed...
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New Products

NEW WAVES: Military and government Electronics
Microwave Downconverter The model PN9276 is a 40 GHz microwave downconverter that provides the combination of high bandwidth with low noise performance. This model is designed for radar, commercial wireless, satellite terrestrial microwave links and calibration labs. This downconverter plugs into any PN9000 phase noise analyzer or PN9500 wideband...
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Broadband Tactical Communications Antennas

Military tactical communications require transportable radio systems that can be set up quickly in the field, under difficult conditions, to establish communication links. These radio systems are mounted in tactical operation centers (TOC), vehicles and shelters. Legacy antennas used in these systems operate primarily in the VHF or UHF...
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Phased Arrays and Radars – Past, Present and Future

This is a survey article summarizing the recent developments and future trends in passive, active, bipolar and monolithic microwave integrated circuitry (MMIC) phased arrays for ground, ship, air and space applications. Covered is the DD(X) ship radar suite; THAAD (formerly GBR); European COBRA; Israel BMD radar antennas; Dutch shipboard...
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A Printed UWB Triangular Monopole Antenna

A planar printed triangular monopole antenna (PTMA) is presented for ultra-wideband (UWB) communications. The HFSS 3-D EM solver is employed for design simulation. A printed PTMA has been fabricated on a FR-4 substrate. The measured VSWR is less than 3...
The emerging ultra-wideband (UWB) radio is the technology for transmitting and receiving short, information-encoded, electromagnetic impulses. 1,2 UWB technology is loosely defined as any wireless transmission scheme that occupies a bandwidth of more than 25 percent of a center frequency, or more than 1.5 GHz. According to the Federal...
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Performance Comparisons Between Dielectric Resonator Antennas and Printed Microstrip Patch Antennas at X-band

The performance of a cylindrical dielectric resonator antenna (DRA) and a circular printed microstrip patch antenna (MPA) are compared at X-band. Comparisons between the antenna sizes, transmission coefficients, radiation patterns, gains and radiation ...
Microstrip patch antennas (MPA) 1–5 and dielectric resonator antennas (DRA) 6–7 have been studied extensively. They share the advantages of low profile, lightweight, ease of fabrication and are easy to excite by different methods. Both antennas are viable candidates for numerous applications, either as individual elements or in an...
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