Antenna Design and Analysis
Antenna technology is constantly advancing to meet the growing demands of industry. Likewise, Remcom has been keeping pace in order to provide engineers with antenna analysis software that matches their processes and helps them meet their design requirements.
Our customers’ interests range from simple academic examples to the latest cellular devices containing multiple antennas and hundreds of components. Models can be analyzed in XFdtd for efficiencies, dissipated power, SAR, radiation patterns, reflection coefficients and more. Plus, XFdtd antenna simulation software supports parametric analysis and exploits the computational power of GPUs.
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. The antenna scans narrow beams from near broadside to near end fire as a function of frequency. The antenna performance in terms of S-parameters, gain patterns, and radiation efficiency are determined.
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 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.
A proposed smartphone design that includes a 4G antenna operating at 860 MHz and a 5G array at 28 GHz is analyzed in XFdtd to determine operating characteristics and any mutual coupling. A brief study of configurations is performed to find the best positioning for each antenna.
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 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.
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.
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.
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.
Remcom’s Circuit Element Optimizer for XFdtd is a unique tool for full wave matching circuit optimization. This webinar introduces the capability and provides an example of how it is used. A GPS/Bluetooth antenna and an LTE antenna are used for the demonstration.
In this video from Remcom's booth at IMS 2019, Jeff Barney introduces the CDF of EIRP metric for antenna phased array analysis in XFdtd. The example demonstrates a special diversity application using a smartphone, but this metric is also useful for dual polarized antennas, 2D MIMO systems, subsystem arrays, and more.
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.
This video tutorial series helps XFdtd users to create and analyze a broadband antenna. The series will guide you through XF's antenna design process, with each video highlighting key steps and features.