The patterns in both directions have a single broad lobe. 26.2.1.3 Radiation patterns. The radiation pattern is defined as a mathematical function or a graphical representation of the far field (ie, for r 2 D2 / , with D being the largest dimension of the antenna) radiation properties of the antenna, as a function of the direction of departure of the electromagnetic (EM) wave.Currently, STK does not include a built-in antenna model for the turnstile or the Yagi-Uda antenna. These types of antennas are commonly used by universities and amateur radio enthusiasts as they are relatively inexpensive and operate well in amateur radio frequency bands such as UHF and VHF. How do you model a turnstile, Yagi-Uda, monopole, patch, or other custom antenna in STK? The answer: MATLAB Antenna Toolbox. The MATLAB Antenna Toolbox is a powerful tool that lets you create any model from a simple monopole antenna, to a complex reflector-backed equiangular spiral antenna.
The article models a basic turnstile antenna, a single Yagi-Uda antenna, and a cross-polarized Yagi-Uda antenna. These types of antennas are commonly used by small organizations and universities on small satellite missions due to their low cost and relatively strong effectiveness. These concepts can be used to model any number of different types of antennas for use in STK and create a better communication operations scenario.Radiation for the antennas of Fig.
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Potential applications of this reconfigurability and directions for future work are discussed. Measured results of the three antenna configurations are provided.
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