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Performance Characteristics of Digital Frequency Discriminators

Digital frequency discriminators are key components of instantaneous frequency measurement (IFM) receiver systems as well as many other complex electronic warfare (EW) systems. However, to obtain optimum results it is essential to match DFD performance levels to a specific application. DFDs are integral components of IFM receiver systems; they may also be imbedded into a wide range of military systems such as radar warning receivers (RWRs), electronic countermeasures (ECM) systems, and electronic support measures (ESM) platforms, where they help provide instantaneous frequency measurement capability.

Posted in: Electronics & Computers, White Papers, White Papers

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High-Speed Switched Serial Fabrics Improve System Design

Recently updated, this handbook reviews the development of switched gigabit serial fabrics to enhance the VMEbus and PMC mezzanines; the role of FPGAs in implementing this technology; and, finally, how some of the latest VXS, XMC, OpenVPX, PCIe, and AMC products can be used in high-speed data acquisition, recording, and software radio systems.

Posted in: White Papers, White Papers

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High-Speed, Real-Time Recording Systems

Recently updated, this handbook reviews some of the techniques and features that are widely desired in a high-speed, real-time recording system. Among others, these include the use of a non-proprietary file system, the use of a client-server architecture, and the presence of a user-friendly API (Application Programming Interface) for integrating the recorder into a larger system.

Posted in: White Papers, White Papers

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Putting FPGAs to Work in Software Radio Systems

Recently updated, this handbook reviews the latest FPGA technology and how it can be put to use in software radio systems. FPGAs offer significant advantages for implementing software radio functions such as digital downconverters and upconverters. These advantages include design flexibility, higher precision processing, lower power, and lower cost.

Posted in: White Papers, White Papers

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Critical Techniques for High-Speed A/D Converters in Real-Time Systems

Recently updated, this handbook reviews the markets and technology for A/Ds with sampling frequencies higher than 100 MHz; it discusses sampling and filtering techniques and new FPGA technology for A/Ds; typical high speed A/D products are presented, along with some high-speed data acquisition applications.

Posted in: White Papers, White Papers

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Software Defined Radio Handbook

Software Defined Radio has revolutionized electronic systems for a variety of applications that include communications, data acquisition and signal processing. Recently updated, this handbook shows how DDCs (Digital Downconverters), the fundamental building block of software radio, can replace legacy analog receiver designs while offering significant performance, density, and cost benefits.

Posted in: White Papers, White Papers

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Ultra-High-Power W-Band/F-Band Schottky Diode-Based Frequency Multipliers

These multipliers can be used in millimeter-wave radars or radiometers in national security applications such as standoff personnel screening, mass transit security, and perimeter intrusion. NASA’s Jet Propulsion Laboratory, Pasadena, California All-solid-state, room-temperature, multipixel, sub milli meter-wave re ceiv ers are in demand for efficient spatial mapping of a planet’s atmosphere composition and wind velocities for future NASA missions to Venus, Jupiter, and its moons. Roomtemperature operation based on Schottky diode technology is a must in order to avoid cryogenic cooling and enable long-term missions. This technology is also being successfully applied for very-high-resolution imaging radars for standoff detection of concealed weapons. For submillimeter-wave radar imaging, the main issue is that, in order to reach video frame rates with high image pixel density, multi-pixel focal plane transceiver arrays are needed to illuminate targets with many radar beams simultaneously.

Posted in: Briefs

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