Estimate electromagnetic waves from a distance using two different methods and compare the results! The shape was modeled in full.
The Yagi-Uda antenna is a directional antenna composed of a waveguide made up of multiple short elements, a long element reflector, and a feed mechanism positioned between them. The electromagnetic waves radiated from the feed mechanism are analyzed using the finite element method, and based on the results, far-field plane waves are estimated. The feed mechanism radiates electromagnetic waves polarized in the Z-axis direction, and the behavior of the electromagnetic waves in the air region surrounding the entire antenna is analyzed using the finite element method. Next, based on those results, the electromagnetic waves in the far field are estimated using two different methods, and the results are compared. The shape is modeled as a full model. [Software Used] ■ PHOTO-WAVEjω *For more details, please refer to the related links or feel free to contact us.
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【Analysis Conditions】 ■Analysis Model - An antenna is installed in the air layer. - An "impedance boundary" is set at the outer perimeter of the air layer, creating a "perfectly matched layer" condition. - A model with "5 elements" is also included in the analysis for comparison of results. ■Radiated Electromagnetic Waves - Magnitude: 1[V/m] in the Z-axis direction - Frequency: 1G[Hz] wavelength λ = 3.0×10^-1[m] ■Observation Points for Estimating Electromagnetic Waves in the Far Field: A circle with a radius of 1.0[m] ■Method for Estimating the Far Field: Method using external field calculations and multipole expansion *For more details, please refer to the related links or feel free to contact us.
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At Photon, we are developing "electromagnetic field analysis software" that models and simulates products and components utilizing electromagnetic phenomena on computers. In traditional design and development environments, the process has primarily revolved around trial and error through prototypes based on the experience of engineers and experiments with those prototypes. However, conducting experiments with actual prototypes and analyzing the results requires significant time and cost. Moving forward, transitioning from an experimental and prototype-based approach to an analysis-based design is a critical issue for improving productivity, and establishing simulation technology as the core of analysis-based design techniques is a challenge. In this context, Photon is developing and providing "analysis software" focusing on electromagnetic fields, as well as heat, vibration, and sound fields. By utilizing Photon’s software, efficient development and design of various industrial products can be achieved. In this way, Photon aims to reduce the number of prototypes and development costs, shorten development periods in the manufacturing sites of our users, and ultimately support the enhancement of our users' competitiveness.
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