Antenna Placement

Introduction to FDTD Electromagnetic Simulation for Automotive Radar

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

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.

Finite-Difference Time-Domain Modeling of Ultra-High Frequency Antennas On and Inside the Carbon Fiber Body of a Solar-Powered Electric Vehicle

Finite-Difference Time-Domain Modeling of Ultra-High Frequency Antennas On and Inside the Carbon Fiber Body of a Solar-Powered Electric Vehicle

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.

Comparison of Indoor Propagation Modeling of WiFi Coverage Using Wireless InSite and Measurements

Comparison of Indoor Propagation Modeling of WiFi Coverage Using Wireless InSite and Measurements

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.

High Fidelity Modeling of Spatio-Temporally Dense Multi-Radio Scenarios

High Fidelity Modeling of Spatio-Temporally Dense Multi-Radio Scenarios

Heterogeneous, mobile wireless networks are becoming increasingly difficult to validate for operational use.  Presented is an approach to reduce the run-time of these high fidelity simulations by constructing precise results based on adjacent ray-paths from a lower resolution simulation. Speed and accuracy trade-offs are presented for this approach in typical urban scenarios, demonstrating its effectiveness in meeting the growing needs of wireless channel emulation.

Complex 3D Modeling of Sea to Land Scenario

Complex 3D Modeling of Sea to Land Scenario

This paper presents results from sea to land propagation using Wireless InSite. The effort explores the effects of various elements in the scene and how they impact the results. The various elements in the scene include the ships out at sea, the ships docked, the docks themselves, the buildings around the dock area, and the material properties of each.

Indoor Channel Measurement and Prediction for 802.11n System

Indoor Channel Measurement and Prediction for 802.11n System

Significant improvements in the quality and reliability of indoor WLAN communications are claimed for devices with MIMO technology applying 802.11n standards, which allow users to achieve a theoretical data rate up to 300-600 Mbps on a single transmission. This paper presents an analysis of a commercial 802.11n MIMO 2×3 dual band (2.4 and 5 GHz) system focusing on the operational throughput performance over an indoor environment for Line of Sight (LOS) and Non Line of Sight (NLOS) scenarios.

Using Simulation to Optimize Safety, Performance, and Cost Savings When Integrating an Antenna Onto a Platform

Using Simulation to Optimize Safety, Performance, and Cost Savings When Integrating an Antenna Onto a Platform

Successful integration of an antenna onto a vehicle platform poses many challenges.  This paper provides a variety of examples of how modeling and simulation can be used to analyze antenna performance, identify problems, and evaluate potential solutions.

Directional Reconfigurable Antennas on Laptop Computers: Simulation, Measurement and Evaluation of Candidate Integration Positions

Directional Reconfigurable Antennas on Laptop Computers: Simulation, Measurement and Evaluation of Candidate Integration Positions

This study reports on the integration of a novel reconfigurable microstrip antenna capable of reconfiguring both its radiation pattern and frequency response onto a generic laptop computer structure. The purpose of such an exercise is to provide the relevant information necessary to integrate high performance antennas onto structures that can be used in ad hoc communication scenarios as well as other demanding applications.