Various designs of a dual-band antenna constructed from textile fabrics for use in a wearable application are evaluated using XFdtd.  The base antenna design of a rectangular patch with a tuning via are evaluated for antenna performance and Specific Absorption Rate (SAR) exposure.  The base design is made into various arrays for determining an optimal configuration for a MIMO application.  The antennas are also tested in bending situations which might arise in a body-worn application.

An antenna based on a transverse slotted rectangular waveguide design is realized in a substrate integrated waveguide structure and simulated in XFdtd EM Simulation Software.

A 60 GHz antenna array design is simulated in XFdtd to demonstrate suitability for use on wireless Virtual Reality headsets. The antenna array is comprised of elements each containing two patches and a parasitic element. The resulting array produces a fan beam which may be steered by varying the phasing between the elements resulting in broad coverage. The final design is simulated mounted on a section of a virtual reality visor.

This example uses XFdtd to simulate the performance of a low cost, chipless RFID system. The RFID tag is comprised of two ultrawide band monopole disk antennas mounted in a cross-polarized configuration combined with a microstrip line adjacent to six varying size spiral resonators which each represent a single bit in the RFID tag code. The system is validated using two cross-polarized log periodic dipole arrays as the send and receive devices.

This example is a more complete device for 28 GHz beamforming for 5G networks and includes an 8x8 patch antenna array, 1 to 8 power dividers and a Rotman lens initial stage. The design of the Rotman lens is performed using Remcom’s Rotman Lens Designer® (RLD) software, which produces a CAD version of the device for use in XFdtd®. In XFdtd, a set of eight 1 to 8 Wilkinson stripline power divider networks is designed to act as the connection between the Rotman lens and the antenna array. The performance of each stage is simulated and evaluated.

Steerable array antennas are of significant interest to help meet the goals of 5G mobile communication systems. In this invited paper from Microwave Journal, we use 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.

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

This webinar introduces XF’s collection of ESD simulation features and demonstrates how to minimize the chance of undetected damage prior to hardware testing.

The latest release of XFdtd introduces exciting new features for 5G antenna array design, including workflow enhancements for modeling complex devices at millimeter wave frequencies. This webinar demonstrates performance metrics for 5G beam steering applications via the new CDF of EIRP plot as well as XF’s enhanced matching network design integration with Optenni Lab™ matching circuit optimization software.

Fixed Wireless Access is a key application expected to benefit from 5G networks. This webinar will demonstrate how modeling and simulation can be used to assist system designers, first in the design of a complex antenna array for a base station, and then to assess its potential performance in the field.

The design of a matched antenna is a fairly involved process. This webinar shows how XFdtd simplifies this process by providing tools to parameterize the unmatched antenna, determine S11, synthesize a matching network topology with Optenni Lab, and determine the final component values using the Circuit Element Optimizer.

Learn how to use XF's features for ESD testing as we walk through the process of analyzing a multi-layer PCB and identifying potential locations of dielectric breakdown.

In this video Remcom introduces the CDF of EIRP metric for antenna phased array analysis in XFdtd. The example demonstrates a special diversity application using a smartphone.

In this short video from IMS 2018, Remcom's product marketing manager, Jeff Barney, describes the process of simulating the antenna element, modeling the channel propagation, and calculating the throughput modulation.

This video gives a demonstration of Full-Wave Antenna Matching Circuit Optimization using XFdtd's Circuit Element Optimizer (CEO). The antenna matching circuit design flow is discussed, including CEO's analysis of a given PCB layout. Predicted S-parameters and optimal component value results for two different frequency bands are also shown.