Dielectric constant distribution
Wikipedia link: Horn antenna
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Dielectric constant distribution
| A horn antenna is commonly used as the feed for a dish antenna, and simply consists of a flaring at the end of a waveguide that results in a reasonably confined beam. Wikipedia link: Horn antenna |
Electric field animation | Time-averaged Poynting vector |
| This is an animation of the component of the electric field out of the plane of the page. | The direction in which energy is travelling at any instant is proportional to the cross product of the electric and magnetic fields, known as the Poynting vector. The arrows show the direction of the Poynting vector averaged over the simulation, while the colours show its strength. |