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.
XFdtd Analyzes Complex Beam Steering with Antenna Array Simulation
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.
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.
Direction of Arrival Estimation for Retrodirective Rotman Lens Antenna Array
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
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.
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.
Path Gain and SAR Analysis of On-Body Antenna Optimized for Hearing Instrument Applications
This presentation describes the simulation of a hearing instrument (HI) device. The design was simulated in the presence of a homogeneous SAM phantom and an anatomically correct, heterogeneous head model. The simulation results illustrate the differences between the head models and highlight the more acceptable results for improved device safety.
Optimized Antenna Design Using GPU Acceleration and Particle Swarm Optimization
This study considers the example of designing a broadband antenna for an unattended ground sensor using XFdtd. To address the challenge of attaining acceptable performance over both dry and wet ground conditions, we use Particle Swarm Optimization (PSO). XStream GPU Acceleration and MPI + GPU technology make this type of sophisticated simulation strategy possible, completing multiple optimizations with hundreds of generations to converge on the best values.
Conformal Antenna Array Design on a Missile Platform - Microwave Journal
This application note from the January 2013 issue of Microwave Journal demonstrates the process of adding an electrically steerable, conformal antenna array to the body of a high speed missile. By leveraging XF’s XStream GPU Acceleration, a complex 3D simulation including multiple array elements with curved surfaces that could take several hours was completed within a few minutes.
Rotman Lens Design for Millimeter-Wave Sensor Application
This paper demonstrates the design of Rotman lens for ESM sensor application in operation band 32-38 GHz. The initial design is created in Remcom’s Rotman Lens Designer and then verified against experimental measurements. Parameters of the realized prototype are presented and methods of increasing its performance are outlined.
Conformal Antenna Array Design Using XFdtd Simulation Software
Array modeling is a multistep process that often includes several revisions until the design goal is met. The Mobile Base Station Designer in XF’s XTend Script Library helps to speed up this design process. XStreamGPU Acceleration rapidly simulates the array using the actual antenna model to ensure the final design meets the design criteria. This presentation demonstrates how to design a conformal antenna array on a curved surface.
