CST and Optenni demonstrate MIMO antenna optimization tools

CST and Optenni demonstrate MIMO antenna optimization tools

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By eeNews Europe

Multiple input, multiple output (MIMO) antennas are a fundamental part of many next-generation communication standards, promising high data rates and good reliability in multipath environments. Miniaturization and antenna diversity mean that designing efficient MIMO antenna systems can be difficult. For this reason, CST and Optenni are working to improve the design flow for MIMO systems and make it easier for engineers to optimize their MIMO designs.

Matching circuits are a useful tool for improving the efficiency of antennas. The best MIMO matching circuit is not simply the one that provides the best impedance match, but which balances this against losses in the circuit and parasitic coupling between the MIMO antennas. The latest release of Optenni Lab, the matching circuit synthesis tool from Optenni, provides a straightforward design flow for multiport antenna design.

The engineer need only enter the operation frequency ranges of the antennas and the desired number of matching components on each of the matching circuits. Optenni Lab then proposes multiple optimized matching circuit combinations suitable for the system at hand.

The electromagnetic simulation tools in CST STUDIO SUITE® can be used alongside Optenni Lab to design and characterize MIMO antenna systems. Antennas can be modeled not only in isolation but also in a realistic environment, with full farfield properties calculated. This is especially useful for antennas in close proximity to the body. Built-in post-processing methods allow MIMO-relevant quantities such as envelope correlation, diversity gain and multiplexing efficiency to be calculated automatically.

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