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More in Test & Measurement

  • Apr. 11, 2011
    article
    Microwaves and RF

    Challenges In Achieving Linearity

    Linearity performance can be evaluated for both active components, such as amplifiers, and passive components, such as frequency mixers and switches, although it can be confusing to compare numbers....More
  • Feb. 18, 2011
    article
    Microwaves and RF

    Understanding Dynamic Range

    Dynamic range is a simple concept, albeit one often made more complex by the various interpretations of what limits the largest and smallest signals that a receiver can process....More
  • Feb. 18, 2011
    article
    Microwaves and RF

    Free Software Computes Impedance Transitions

    This handy utility program can be used when matching the different impedances of transmission lines in standard circuit formats, including microstrip, stripline, and coplanar-waveguide circuits....More
  • Jan. 19, 2011
    article
    Microwaves and RF

    Detector Scans Power From 0.6 To 15 GHz

    With a blazing response time of 7 ns, this precision RF power detector includes a comparator for capturing short-duration, single events or fault conditions at frequencies through 15 GHz....More
  • Jan. 19, 2011
    article
    Microwaves and RF

    Capturing The Essence Of An Oscilloscope

    Analog and digital oscilloscopes continue to improve in performance, serving as invaluable members of any RF/microwave design test bench....More
  • Jan. 19, 2011
    article
    Microwaves and RF

    Tracking Test Gear Through The Years

    Many of the earliest measurement functions, testing for amplitude, noise, and phase at high frequencies, are still performed, but now benefit from embedded computers and software....More
  • Jan. 19, 2011
    article
    Microwaves and RF

    USB Powers Compact RF Test Instruments

    The latest additions to a line of USB RF/microwave measurement devices include several power meters, vector modulators, and a set of synthesized signal generators capable of low-phase-noise performance....More
  • Jan. 19, 2011
    article
    Microwaves and RF

    Critique Components For Test Applications

    Although often overlooked, it is these additional active and passive components that make many measurements possible in even the most elaborate of test systems....More
  • Jan. 19, 2011
    article
    Microwaves and RF

    Scope Scrutinizes 20 GHz Across Four Channels

    This new line of digital oscilloscopes and analyzers captures bandwidths to 45 GHz with sample rates to 120 GSamples/s and 768 Mpoints of analysis memory...More
  • Jan. 19, 2011
    article
    Microwaves and RF

    Modular Instruments Gain Traction

    Building on standards like PXI, modular test instrument solutions provide needed functions with faster speeds, ease of use, lower price tags, and the flexibility to add measurements as required....More
  • Jan. 19, 2011
    article
    Microwaves and RF

    Standards Befit Modular Approaches

    TO SOME ENGINEERS, a do-it-yourself modular test and measurement system seems to connote a sort of "Wild West" design mentality in which solutions are quickly patched together. They may not be compatible or be able to be managed by a common ......More
  • Dec. 20, 2010
    article
    Microwaves and RF

    Model PAs With Wideband Signals

    Comparing conventional and orthogonal polynomial models with and without memory effects shows how these models can be used to emulate the nonlinear behavior of power amplifiers....More
  • Dec. 20, 2010
    article
    Microwaves and RF

    Analyze Antenna EM In Time And Frequency Domains

    Ultra-wideband (Uwb) antenna far-field radiation is typically characterized by the numerical computation of radiation integrals. This computation involves the free-space dyadic Green's functions. It is usually carried out in the frequency ......More
  • Dec. 20, 2010
    article
    Microwaves and RF

    Network Analyzer Continuously Calibrates Via GPS

    BROMMA, SWEDEN: Time and frequency test specialist Spectracom has developed a Sync Tester/Analyzer for nextgeneration communication networks. Typically, synchronization testers are dedicated to doing tests in one type of network. Yet the new ......More
  • Dec. 20, 2010
    article
    Microwaves and RF

    Scopes Climb To 100 GSamples/s

    These high-speed sampling and mixed-signal digital oscilloscopes have been upgraded with faster sampling speeds, more stable time bases, and additional processing power for enhanced operation....More
  • Nov. 9, 2010
    article
    Microwaves and RF

    Meters Read CW Power From -70 To +44 dBm

    When equipped with a suitable sensor, this series of single- and dual-channel power meters can cover a wide power measurement range for CW signals from 10 kHz to 100 GHz....More
  • Nov. 9, 2010
    article
    Microwaves and RF

    System Captures Broadband Signals

    This modular instrument is essentially an RF/microwave signal recorder, capable of capturing long-duration as well as low-probability signals for analysis of timing and modulation details....More
  • Nov. 9, 2010
    article
    Microwaves and RF

    Paris Points The Way To RF Design And Analysis

    Active, ambitieuse et un vision pour lavenir is how the French might summarize this latest European Microwave Week (EuMW) event....More
  • Nov. 9, 2010
    article
    Microwaves and RF

    Software Takes On Design "Wild Cards"

    By constantly pushing their tools beyond the limits of traditional simulation and modeling, software vendors are ensuring truer prototypes and faster, cheaper design....More
  • Nov. 9, 2010
    article
    Microwaves and RF

    Model Surface Effects On Power Dissipation

    By using models that include electromechanical coupling of the surface roughness of a substrate, it is possible to predict the effects of that roughness on power dissipation at microwave frequencies....More
  • Nov. 9, 2010
    article
    Microwaves and RF

    Testers Exercise Satcom Systems

    These satellite link emulators employ analog and digital signal processing to perform testing of satellite payloads and earth terminals at IFs to 1450 MHz and bandwidths to 250 MHz....More
  • Oct. 14, 2010
    article
    Microwaves and RF

    Test Solutions Reach 500 GHz

    PARIS, FRANCE: At this year's European Microwave Week, Rohde & Schwarz presented solutions that range to 500 GHz. The highlights included the R&S FSVR real-time spectrum analyzer covering to 30 GHz and the R&S ZVA high-end network analyzer with ......More
  • Oct. 14, 2010
    article
    Microwaves and RF

    Design A B3G Receiver Front End

    Computer simulations make it possible to examine tradeoffs in the choices of LNAs, mixers, and impedance-matching networks when designing a broadband zero-IF receiver....More
  • Oct. 14, 2010
    article
    Microwaves and RF

    System Combines Broadband RF Source And Analyzer

    BY COMBINING A SIGNAL GENERATOR and analyzer, the CS9000 Broadband Signal System (BSS) vows to replace an entire bench of equipment including spectrum analyzers, oscilloscopes, power meters, and logic analyzers. The system can analyze a maximum of ......More
  • Oct. 14, 2010
    article
    Microwaves and RF

    Evaluate Antenna Measurement Methods

    For UHF antennas at frequencies from 100 to 300 MHz, an anechoic chamber properly equipped with the right signal generation and analysis equipment provides an ideal test solution....More

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