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Application Briefs
Test & Measurement

High-Reliability MEMS Switches for Radio Frequency Applications

The RF MEMS switch will be an important building block for a variety of wireless applications including cell phones, smart antennas, tunable filters, automated test equipment...

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Briefs
Test & Measurement

Process for Testing Aeromedical Equipment

Medical devices are designed to function in environmentally controlled locations, such as stationary hospitals, and not within the harsh, dynamic aircraft environment. Yet, the same medical devices...

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Application Briefs
RF & Microwave Electronics

Measuring Radar Cross Section with Handheld VNAs

Radar cross section (RCS) is the measure of an object's ability to reflect radar signals in the direction of the radar receiver, i.e. it is the measure of the ratio of backscatter per...

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Products
Electronics & Computers

16-Bit Data Acquisition Board

Pentek, Inc. (Upper Saddle River, NJ) has added the Model 71662 four-channel, 200 MHz, 16-bit data acquisition board with built-in digital down converters (DDCs) to its popular Cobalt® family of Xilinx Virtex-6...

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Articles
Aerospace

Fiber Optic Gyroscope Technology Improving Weapons Systems Performance

Autonomous vehicles require gyroscopes for navigation and stabilization of the platform in demanding battlefield, aerospace and undersea environments. Autonomous vehicles...

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Application Briefs
Defense

Handheld Scanner Keeps USAF Planes Combat-Ready

Engineers at several United States Air Force (USAF) bases now use NVision's HandHeld laser scanner to reverse-engineer complex aircraft parts, which are then accurately machined and installed....

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Application Briefs
Test & Measurement

Low Noise Advances in RF & Microwave Signal Analysis Platforms

Spectrum measurements are essential to RF and microwave testing. The newer signal analyzers available today deliver performance far better than those of just a few years ago. The...

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Articles
Test & Measurement

Reliable EMI Shielding Materials and RF Cable Assemblies Ensure High Performance for Handheld Test Instruments

While high-performance test equipment has been used successfully in the laboratory for many years, the trend is moving toward...

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Products
RF & Microwave Electronics

RF/IF Digitizer

ZTEC Instruments (Albuquerque, NM) and Astronics DME Corp. (East Aurora, NY) have developed the ZR8441 RF/IF digitizer. The digitizer comes standard with a full-featured, on-instrument spectrum analyzer. Technical...

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Products
Test & Measurement

Vector Signal Generators and Analyzers

National Instruments (Austin, TX) offers the NI PXIe-5663E 6.6-GHz, 2-, 3-, and 4-channel RF vector signal analyzers (VSA) and NI PXIe-5673E 6.6-GHz, 2-, 3-, and 4-channel RF vector signal generators...

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Briefs
Electronics & Computers

Analysis of Clustering Tools for Moving Target Indication

Current and future forces operating in urban environments need the capability to detect slow-moving personnel inside buildings. To accomplish this, a time-domain approach was developed that uses a low-frequency, ultra-wideband (UWB) radar with a transmit pulse capable of penetrating...

Products
Test & Measurement

Microwave Signal Generators

The 2500B series of microwave signal generators from Giga-tronics (San Ramon, CA) covers 100 kHz to 50 GHz with low phase noise, high rejection of harmonics, sub-harmonics, and spurious, high output power level....

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Articles
Aerospace

Fiber Interferometry for Testing Military Avionics

Fiber-optic networks have benefited from nearly 20 years of continuous expansion (notwithstanding the brief, yet surprisingly quiet period from 2002 to 2005). For terrestrial networking,...

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Briefs
Test & Measurement

Improvements in Measurement of Permeability and Permittivity

The two-transmission method is an improved method of determining, from microwave measurements, the complex permeability and complex permittivity of a sample of a material typified...

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Briefs
Test & Measurement

Effect of Laser Noise on an Analog RF/Photonic Link

Aset of equations has been formulated to enable quantification of several aspects of the performance of an analog photonic communication link as affected by laser noise. A procedure for...

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Briefs
Test & Measurement

Delta-Sigma UHF Digital Waveform Generator

A prototype Digital Waveform Generator (DWG) in the ultra-high-frequency (UHF) range uses Delta-Sigma (Δ−Σ) modulation techniques, which permit arbitrary and accurate waveform...

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Briefs
Test & Measurement

Multiscale Virtual Design and Testing of Materials

Progress has been made in research on several fronts in an effort to develop computational simulation capabilities for use in virtual design and testing of advanced structural materials. It...

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Briefs
Electronics & Computers

Life Tests of a Microwave MEMS Capacitive Switch

Life tests have demonstrated the longevity of an electrostatically actuated capacitive switch of a microelectromechanical systems (MEMS) type suitable for handling radio signals having...

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Briefs
Physical Sciences

Measuring Corrosion-Related Properties of Coupled Metals

Amethod and apparatus have been conceived for using electrochemical impedance spectroscopy (EIS) for determining rates of corrosion of coupled metals. EIS has been used heretofore for...

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Briefs
Test & Measurement

Scaling of Flight Tests of Unmanned Air Vehicles

A program of research has addressed a methodology of scaling of flight tests of unmanned air vehicles (UAVs) intended primarily for military use in observing and/or attacking targets on the...

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Briefs
Test & Measurement

Small-Scale Combustion-Chamber Testing Facility

A small-scale combustion-chamber testing facility has been designed and partly built for use in evaluating advanced combustor designs for future gas turbine engines. The specific model...

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Briefs
Mechanical & Fluid Systems

Thermal Design and Analysis of a Rocket-Engine TAN Injector

A subscale thrust-augmented-nozzle (TAN) rocket engine was designed, built, and hot-fire tested to demonstrate the validity of the TAN concept. As described in more detail in the...

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Briefs
Materials

Composites Design and Structural Analysis Tool

AFRL researchers developed a unique design and structural analysis tool for composite materials, and they subsequently transitioned their product to manufacturers of helicopters and other...

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