This paper investigates the accuracy of the finite-difference time-domain (FDTD) method for separately estimating coil conductor and radiative loss contributions.
Transient EM/Circuit Co-Simulation in XFdtd: A Closer Look at TVS Diodes for ESD Protection
XFdtd Analyzes Complex Beam Steering with Antenna Array Simulation
Computation of Fields and SAR for MRI with FDTD Simulation
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.
Using CDF to Assess 5G Antenna Directionality
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.
Time Domain Simulation of Electrostatic Discharge Testing
ESD Testing Simulation with XFdtd
Using EM Simulation for 5G Design E-Book
Wireless Charging Applications using XFdtd® EM Simulation Software
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.
Time Domain Electromagnetic / Circuit Co-Simulation
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.
Simulating Throughput as a Device Design Metric
Electrostatic Discharge (ESD) Simulation and Prediction for RF Devices
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.
Full Wave Matching Circuit Optimization Shortens Design Iterations
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.
A Time-Domain Method for Analyzing Arbitrarily Shaped Thin Resistive Sheets
Area Source Design for Exciting a Microstrip Line in an FDTD Simulation
Overview of XFdtd's Circuit Element Optimizer
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.
3D Electromagnetic Simulation vs. Planar MoM
Introduction to FDTD Electromagnetic Simulation for Automotive Radar
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.
Benefits of Time-Domain Electromagnetic Simulation for Automotive Radar
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.
Antenna Analysis Using FDTD and Equivalent Circuits
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.