In this paper, results are presented of propagation experiments conducted to verify the accuracy of a novel ray-optical scattering model for EES.  

In this paper, we develop a fast and approximate prediction scheme for indoor path loss using digital image processing, geometrical optics and transport theory.

Human blockage at millimeter-wave frequencies is most commonly modeled through Knife-Edge Diffraction (KED) from the edges of the body shaped as a vertical strip. Although extensively validated in controlled laboratory experiments, the model does not scale to realistic 3D scenarios with many, randomly oriented bodies, on which multipath signals can be incident from any direction, not just normal to the strip. To address this, in this article we investigate computational electromagnetic methods based on raytracing.

The application of machine learning for optimal deployment of 5G infrastructure, such as the position and the orientation of the antenna that help achieve the best signal coverage, is investigated in this paper.

The safe rollout of new or enhanced 5G services using C-band spectrum near airports in 2022-2023 will require realistic modeling of radio propagation to mitigate potential interference with legacy radar altimeters which remain in operation as of summer 2022. In this whitepaper, we use Wireless InSite to provide a realistic assessment of radar altimeter interference due to emissions from 5G base stations along a landing approach to runway 27L of Chicago O’Hare International Airport.

This paper investigates the accuracy of the finite-difference time-domain (FDTD) method for separately estimating coil conductor and radiative loss contributions.

Learn how WaveFarer® Radar Simulation Software uses ray-tracing to simulate virtual drive scenarios and predict radar returns as a system moves through an environment with vehicles, roadway structures, pedestrians, and other objects.

This Microwave Journal article, which was contributed by Remcom, explores the effectiveness of massive MIMO beamforming at mitigating the challenges expected from using the expanse of spectrum available in the mmWave band. Specifically, it explores a use case involving our Wireless InSite EM propagation software and its mmWave hybrid beamformer capabilities to transmit data streams to a sedan driving in central Manhattan.

This paper introduces XFdtd’s transient EM/circuit co-simulation capability, which combines the strength of 3D full-wave electromagnetic simulation with the flexibility of circuit solvers.

The following article appeared in the Spring 2020 issue of Focus on Materials, a quarterly bulletin produced by the Pennsylvania State University's Materials Research Institute. Professor Ram Narayanan of Penn State's College of Engineering worked with Remcom to produce a 5G millimeter wave coverage concept using existing AT&T towers in State College, PA, showing ray path predictions generated in Wireless InSite. Here Professor Narayanan discusses the challenges facing 5G signal propagation.

In this article from the July 2020 issue of Microwave Journal, we demonstrate how XF’s superposition and array optimization features simplify the process for understanding device performance by providing efficient ways to validate array coverage.

The simulation procedure allows the coil designer to get quick feedback on the performance of the device, without the time or cost of producing numerous prototypes. The further ability to simulate the structure in practical use, such as the coil around a body part, permits the designer to optimize the device under loaded conditions and ensure that the regulated limits such as SAR are within thresholds. In this article, a SAR analysis for an MRI system is presented using XFdtd.

The following Microwave Journal article describes the modeling of a SATCOM link, specifically the use case of using a satellite overlay to extend service continuity to IoT devices in a poorly covered rural area.

Significant innovation is taking place for advanced driver assistance systems (ADAS). Radar sensors operating at millimeter wave bands are a key technology and require new modeling and simulation tools to predict their performance.

Steerable array antennas could help meet the goals of 5G mobile communication systems. In this paper from Microwave Journal, we use a simple simulation of an 8x8 patch antenna array to demonstrate the usefulness of the CDF of EIRP to characterize the ability of an array to provide good EIRP in all directions.

Drawing on expertise from the wireless industry, including carriers, operators, device manufacturers, and providers of wireless simulation tools, the IWPC created a comprehensive report that identifies the key features, obstacles, and potential solutions for deployment of mmWave for 5G.

This article from Microwave Journal introduces ESD simulation features in Remcom's full wave electromagnetic simulation software package, XFdtd. Learn about the time domain simulation of ESD testing.

XFdtd simulates ESD testing, enabling engineers to identify potential locations and components at risk of dielectric breakdown in their device designs prior to hardware testing. We summarize XFdtd's features to mitigate ESD risk.

Download examples that demonstrate how EM simulation software solves challenges related to 5G and MIMO. Examples include MIMO and array design, 5G urban small cells, mmWave and beamforming

Wireless power transfer is an emerging technology used in many applications, including consumer electronics, electric vehicles, and biomedical implants, and will undoubtedly see continued growth over the next decade and beyond. This presentation demonstrates how XFdtd can be used to simulate and analyze wireless charging systems.

One of the planned technologies that may change the digital landscape in the early rollouts of 5G is fixed wireless access (FWA), which will provide new and more flexible wireless solutions for broadband for the last mile to the home. In this paper, we use new modeling and simulation techniques to investigate some of the most critical challenges that FWA faces for operation in the physical environment at millimeter waves.

A retrodirective array based on simplified direction-of-arrival estimation algorithm is presented. A beamforming network based on Rotman lens providing the direction of arrival estimation as well as the beam steering is proposed.

Using a new electromagnetic/circuit co-simulation capability based on the FDTD method, the process of importing broadband circuit models into an EM simulation project, optimizing the overall design, and calculating important quantities such as S-parameters, radiation patterns, and system efficiency is demonstrated in this MicroApps presentation from IMS 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.

In this presentation, an example showcasing Wireless InSite's novel diffuse scattering technique is applied to an office environment at 73 GHz and is compared against measurements. The effect of diffuse scattering can clearly be seen on the cross polarized components.

This presentation demonstrates a new predictive tool for simulating Full Dimension Multiple Input, Multiple Output (FD-MIMO) in urban environments.  We evaluate a hypothetical small cell base station employing FD-MIMO for cases using different numbers of transmit antennas, then analyze predicted multipath in the environment and compare performance of beamforming techniques for each of the simulated cases. 

This presentation demonstrates a new multiphysics-based ESD analysis capability which allows the ESD testing process to be analyzed via computer simulation. This will save companies time and money by allowing ESD protection to be optimized during the design phase, thus reducing the number of prototypes required to be built and tested.

In this article from the International Journal of Antennas and Propagation, fabrication of a high resistivity silicon based microstrip Rotman lens using a lift-off process is presented. 

In this interview from The Mobile Network, Remcom discusses how a new approach to Massive MIMO channel modeling will be key to success of 5G network rollouts and applications.

This presentation demonstrates a predictive capability for simulating massive MIMO antennas and beamforming in dense urban propagation environments. Remcom's unique approach allows us to predict the signal-to-interference-plus-noise ratio (SINR) at specific device locations and the actual physical beams formed using these techniques, including unintentional distortions caused by pilot contamination.