In order to maximize automotive connectivity, Rohde & Schwarz and wireless communications engineering specialists IMST GmbH have created a patented antenna digital twin solution that successfully addresses a number of issues and offers significant benefits to automakers and their suppliers.
The method optimizes the design and placement of the antennas to provide, for example, ideal WiFi coverage within the car by combining measurements of the antenna attributes with electromagnetic wave propagation simulation.
While adding antennas outside or inside their vehicles, vehicle manufacturers must overcome a number of obstacles. It takes a lot of effort and time to do antenna simulations, and the outcomes must be validated through physical measurements.
The closed vehicle environment makes accurate measurements within the vehicle impossible. To obtain the optimal antenna position and, thus, the highest connectivity performance for the user within the vehicle, a combination of measurements and modeling is required.
In collaboration with IMST, Rohde & Schwarz has created a three-step procedure. Using test tools made by Rohde & Schwarz, such as an anechoic chamber, an R&S ZNA vector network analyzer, and R&S AMS32 software, physical antennas are characterized in the first step.
There are several advantages to the antenna digital twin solution from IMST and Rohde & Schwarz. Notably, by front-loading antenna validation by combining measurements and simulations, it results in a significant decrease in cost and time for antenna suppliers and vehicle manufacturers. It makes sure that physical antennas are accurately and consistently characterized by using vector network analyzers and anechoic chambers in combination with R&S AMS32 automation software.
Furthermore, because EM-TWIN simulation, data are available in hours rather than days, the solution drastically cuts down on development time. When production tolerances and vehicle body reflections are taken into account, the antenna’s performance can be improved. The EM-TWIN digital antenna twin source technique, which is patented, offers remarkably high modeling accuracy.
This solution saves costly and time-consuming development cycles by enabling the ideal location of the antenna to be determined before the physical vehicle is available. Finding the best spot for the antenna and confirming in-vehicle wireless coverage are major benefits, especially since traditional measurements are very challenging and inaccurate inside the physical confines of the car.
To put it briefly, before prototypes and chassis are ready, the patented antenna digital twin solution from Rohde & Schwarz and IMST improves coverage and performance by speeding up design cycles and optimizing antenna placement on vehicles.
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