Application of CST Microwave Studio in Wireless Communications Application of CST Microwave Studio in Wireless Communications In wireless communications, the design and application of antennas require high-performance simulation technology. These antennas are usually complex in structure and have a large electrical length. In addition, the simulation of radiation in free space requires considerable accuracy. CST Microwave Studio (CST MICROWAVE STUDIO) can be used for the simulation and design of various types of antennas and antenna systems. It includes microstrip, waveguide and helical antennas. The program provides results including three-dimensional or two-dimensional (rectangular coordinates and polar coordinates) near field diagrams, far field patterns, gain and radiation absorption rate. The following are calculation examples of various antennas: introducing the calculation method of antenna arrays, coaxial input, dielectric loaded horn antennas, octagonal arrays excited by microstrip feed networks, circular patch antenna arrays, medicine bottle antennas and six-element Yagi antennas. It can be seen that the application range of CST Microwave Studio is quite wide. Array antennas CST is not just an array: CST Microwave Studio provides a variety of possibilities for calculating antenna arrays. The most accurate method is to directly calculate the entire antenna structure or as large a part of it as possible, because it takes into account the influence of all adjacent antenna elements. This method usually increases the computational effort. However, it is still possible to calculate it for the time domain method used by CST Microwave Studio. If the influence of adjacent elements is small, the calculation of the far-field radiation pattern of the array can be completed in the postprocessor. In addition, Microwave Studio has periodic boundary conditions. Helical antenna array Shaped-mouth radiating array Dipole array Horn antenna cst This is a coaxially fed horn antenna loaded with a dielectric cone. With a single time domain calculation, the user can obtain the near-field electromagnetic distribution and far-field radiation pattern at all frequencies in a broadband. Three-dimensional far-field radiation pattern Distribution of the y component of the electric field at the horn mouth Octagonal antenna cst This is an octagonal antenna consisting of eight patch antennas. It is fed from the coaxial line through a microstrip distribution network. The patch antennas and the microstrip feeding network are on a dielectric substrate with a dielectric constant of 3.5. Current distribution at 10.5 GHz Directivity pattern at 14 GHz Patch antenna array cst interferometry: The far-field directivity pattern of this type of antenna array can be obtained very effectively through the post-processor of Microwave Studio. …
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