Featured Articles

  1. Comparison Of Time Domain Scans And Stepped Frequency Scans In EMI Test Receivers
    4/10/2018

    The paper compares the measurement speed and level measurement accuracy of a conventional stepped frequency scan versus an advanced FFT-based time domain scan. 

  2. ADAS Simulation Under Severe Vibrations
    4/4/2018

    Automotive OEMs now include several safety systems covered by several sensors to reach the industry’s 5 stars’ level safety standards. This application note presents how vibration effects can be calculated with Altair’s HyperWorks solver suite.

  3. Measuring Ultra Low Noise Metrological Reference
    4/4/2018

    Signal sources with very low phase noise have significantly improved in their performance over the past few years. However, it has also become increasingly difficult to measure such low phase noises with standard and even dedicated phase noise measurement systems. 

  4. Design And Simulate Phased Arrays With VSS
    4/4/2018

    As phased-array antennas become more popular for use in communication systems, new capabilities within the NI AWR Design Environment software now provide the means to develop new system architectures and component specifications, as well as implement the physical design of individual components and verify performance before prototyping. This application note covers the design and simulation capabilities of the Visual System Simulator™ (VSS) for phased-array antennas.

  5. Marines' “Mega Drone” Illustrates Need For High-Efficiency Microwave Power Modules
    4/3/2018

    The US Marines' “mega-drone" is intended carry the same payload as an F-35B and fly a radius of up to 700 nautical miles at 30,000 feet. This Marine Air Ground Task Force Unmanned Aircraft System-Expeditionary (or MUX, for short) also will be able to fill “an extremely broad range of missions."

  6. Time Domain Analysis Using A Network Analyzer
    4/3/2018

    This white paper focuses on the time domain analysis displays generated from vector network analyzers (VNAs), as well as frequency domain basics, an in-depth overview of how a time domain display is created from frequency domain data (S-parameters), and more.

  7. 3 Common Pitfalls Of 802.11ax DVT (That Test Developers Should Avoid)
    4/2/2018

    The transition from previous 802.11 standards, such as 802.11n and 802.11ac, to 802.11ax adds several new technologies and performance requirements that need to be fully tested. However, there are a number of challenges in designing these test scenarios.

  8. Overcoming The RF Challenges Of Full-Screen Smartphones
    3/29/2018

    The future generations of smartphones aim to design and build next-generation handsets that deliver a compelling user experience. These next-generation devices must be able to have both an attractive form factor and the ability to deliver high performance connectivity. 

  9. Generating Multiple Phase Coherent Signals – Aligned In Phase And Time
    3/29/2018

    This application note details how to generate phase coherent signals and explains the best methods for calibrating the relative phases and timing between the individual channels. Various measurements of phase stability over time for different RF frequencies are also presented.

  10. Millimeter-Wave Beamforming: Antenna Array Design Choices And Characterization
    3/29/2018

    This paper dicusses fundamentals of beamforming technology, including signals, antennas, and current transceiver architectures. The paper included calculation methods for radiation patterns and some simulations results, as well as showing some real-world measurement results for small linear arrays.