Publications

  1. White Paper: Modeling RF Propagation In Mines Using Wireless InSite
    12/12/2018

    This paper presents results from modeling RF propagation in a mine using Wireless InSite®. The Edgar Mine in Idaho Springs, CO provided the realistic scenario for the model. The path loss exponent was evaluated for a 5m section of the modeled mine by considering three different materials and three different standard deviation of surface roughness values for dry granite. When comparing this simulated data with data retrieved from the Edgar Mine it was determined that the Uniform Theory of Diffraction (UTD) ray tracing code, of Wireless InSite, can portray a communications system within a mine environment.

  2. White Paper: Complex 3D Modeling Of Sea To Land Scenario
    12/12/2018

    This paper presents results from sea to land propagation using Wireless InSite®. The effort explores the effects of various elements in the scene and how they impact the results. The various elements in the scene include the ships out at sea, the ships docked, the docks themselves, the buildings around the dock area, and the material properties of each.

  3. WaveFarer Brochure
    11/30/2018

    WaveFarer™ is a high-fidelity radar simulator for drive scenario modeling at frequencies up to and beyond 79 GHz. Near-field propagation and scattering methods compute raw radar returns from target objects while considering multi-path interactions from ground reflections and other structures.

  4. Benefits Of Time-Domain Electromagnetic Simulation For Automotive Radar
    11/6/2018

    The requirements for automotive radar sensors in common ranges - such as 24 GHz and 77 GHz - are becoming more stringent and engineers need to understand how design decisions affect performance.  

  5. 5G/4G Combined Antenna Analysis In A Smartphone Using EM Simulation
    10/17/2018

    This example uses XFdtd® EM Simulation Software to analyze the performance and interaction of two antenna systems operating at 4G (860 MHz) and 5G (28 GHz) in close proximity in a smartphone design. The 4G antenna is intended to produce a broad pattern for wide coverage while the 5G array should produce narrow beams that can be steered by varying the phasing between elements. The 4G antenna is an inverted-L design and is located at the top of the phone. The 5G antenna array consists of four Yagi-Uda elements that are near the 4G antenna but offset by a conducting block.

  6. EM Simulation Of 28 GHz Series-Fed Patch Antenna Array For 5G
    8/17/2018

    Series-fed patch elements forming an array are simulated to demonstrate antenna performance and beamforming including S-parameters, gain, and effective isotropic radiated power (EIRP) at 28 GHz. Beam steering is performed in one plane by adjusting the phasing at the input ports to each of eight elements.

  7. Beamforming For An 8x8 Planar Phased Patch Antenna Array For 5G At 28 GHz
    8/17/2018

    An 8x8 planar antenna array creates narrow beams capable of scanning large sectors in front of the antenna.  This example focuses on displaying typical simulation results for beams and possible plots of coverage from the full array and combinations of sub-arrays.

  8. Time Domain Electromagnetic/Circuit Co-Simulation
    7/5/2018

    This MicroApps presentation from IMS 2018 demonstrates the process of importing broadband circuit models into an electromagnetic simulation project, optimizing the overall design, and calculating important quantities such as S-parameters, radiation patterns, and system efficiency using a new electromagnetic/circuit co-simulation capability based on the finite-difference time-domain (FDTD) method.

  9. Simulating Throughput As A Device Design Metric
    7/5/2018

    Modern antennas utilize MIMO technology in order to meet consumer demands for high data rates.  As such, throughput is a required design metric when evaluating one antenna design versus another and simulating device performance in a realistic scenario leads to shorter design cycles. Traditional antenna design metrics primarily measure stand-alone antenna performance and don't fully provide the needed insight for current applications.  In order to achieve high data rates, design engineers need to combine their antenna design with a channel model and compute throughput.  This MicroApps presentation from IMS 2018 demonstrates the latest capabilities in throughput simulation.

  10. Simulation Of MIMO Handset Antenna Array Performance With Varying Hand Positions
    5/2/2018

    Performance of a 12-port handset antenna array operating in LTE bands 42/43 (3400-3800 MHz) and band 46 (5150-5925 MHz) is analyzed in XFdtd for varying hand hold positions on the device.  The results computed include S-parameters, Gain, Efficiency and Envelope Correlation Coefficient.