Explore our library of published papers, journal articles, and white papers referencing our software.
Steerable array antennas are of significant interest to help meet the goals of 5G mobile communication systems. This article uses a simple example 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 participants at 14 technology leaders in the wireless industry, including carriers, operators, device manufacturers, and providers of wireless simulation tools, the International Wireless Industry Consortium (IWPC) created a comprehensive report that identifies the key features, obstacles, and potential solutions for deployment of mmWave for 5G.
This article from the July 2019 issue of Microwave Journal introduces ESD simulation features in Remcom’s full wave electromagnetic simulation software package, XFdtd.
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. This presentation summarizes XFdtd's collection of 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.
A question we’re often asked is, “How is Wireless InSite® different from our planning tools?” While every tool is a little different, the most important differences between Wireless InSite and planning tools emerge when users need to simulate 5G mmWave and MIMO systems.
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 new 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.
To keep up with rising demand and new technologies, the wireless industry is researching a wide array of solutions for 5G, including Massive MIMO. Remcom’s Wireless InSite provides an efficient method to predict channel characteristics for large-array MIMO antennas in complex multipath environments.
Full wave matching circuit optimization (FW-MCO) is a new technology that combines full wave, 3D EM simulation with circuit optimization into a novel approach for solving an age-old RF problem: determining which component values provide the desired match for a given matching network layout. This article describes the design process using the design of a matching circuit for a GPS-Bluetooth antenna.
This paper, featured in the July 2015 issue of Microwave Journal, provides a technical comparison of 3D planar EM simulation with fully arbitrary 3D EM simulation and informs users as to which EM approach/formulation may work best for a given application.
XF’s Circuit Element Optimizer utilizes full wave analysis to select the component values for a given printed circuit board (PCB) layout. The tool allows design engineers to optimize matching circuit lumped element values directly in the EM layout where the coupling from multiple antennas and the ground return current paths are taken into account. This whitepaper gives an overview of how the Circuit Element Optimizer works and the benefits it provides.
Electromagnetic simulation has been used by RF engineers for many years to aid the design of automotive radar sensors, but the increasing demands of advanced driver assistance systems (ADAS) are changing the methods used. This paper introduces FDTD’s advantages for automotive radar circuit and systems level designers, including simulation of very large problems, more efficient memory requirements, and the ability to reveal sources of coupling.
This whitepaper demonstrates how XFdtd's time-domain approach enables rapid development by allowing engineers to determine the performance of a fully detailed sensor model installed behind a piece of fascia without needing to build prototypes and run tests in an anechoic chamber. The analysis of a 25 GHz sensor frames the discussion.
To simulate RF devices characterized by the measured S-parameters, the passivity enforcement method is first applied to extracting the rational models. The equivalent circuits can then be generated from the rational models. The RF devices are finally simulated using the FDTD and equivalent circuit co-simulation method. The numerical results of several examples have shown the efficacy and accuracy of the presented approach. The approach can be applied to simulating the broadband features of antennas which includes RF devices, complex geometries and materials in a single run.
A surface impedance method with synchronization in time and its application to the FDTD simulation of multilayer-coated metals and rough surface metals are presented. The numerical results showed that the presented method is accurate and efficient.
Advances in computing resources have made it possible to quickly and accurately model the anti-reflective properties of 3-dimensional sub-wavelength structures. In this paper, the FDTD method was used to model anti-reflective properties of a variety of sub-wavelength structures for 300 to 1300 nm input light.
In this paper, FDTD simulations are performed on a 900 MHz band antenna inside and outside the carbon fiber body of a solar-powered electric vehicle. Data are analyzed to determine the optimal antenna placement for transmission to a receiving antenna located toward the rear of the solar vehicle.
This presentation demonstrates how the 3D ray tracing code in Wireless InSite can accurately predict received power coverage even in a multi-room environment containing many walls and different materials types. In order to verify the accuracy of the code, the floor plan of Remcom’s business offices was modeled in the software with a WiFi antenna and a third party tool was used to create a coverage plot of the received power throughout several of the suites.
Remcom's XFdtd software is well-suited for any microwave device design or analysis task. Our Waveguide Examples booklet showcases a collection of five different waveguide applications with downloadable project files.
This paper outlines the advantages of FDTD EM simulation for analyzing antenna-in-system designs that include both the antenna package and the automobile body features surrounding the device. An XFdtd simulation of a radar mounted in the rear bumper of a sedan provides the framework for the discussion.
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