Are you fascinated by antenna design and eager to learn new techniques? Look no further! Our latest video tutorial, Fast Modeling of a Monopole Supported by a Broadcast Tower, is here to take your skills to the next level. 🚀

🔗 In this video, we guide you through the step-by-step process of creating a detailed monopole antenna model, with the added support of a broadcast tower, using the powerful AN-SOF Antenna Simulator. From radial wires to ground plane connections, we’ve got you covered.

⚡️ Experience the efficiency of the Start – Direction – Length method that ensures accurate assembly and explore a range of tools at your disposal. AN-SOF’s versatility extends to changing length units, copying and pasting wire ends, and much more!

Whether you’re an antenna enthusiast, a student, or a professional seeking to enhance your design skills, this tutorial offers valuable insights. Don’t miss out on the opportunity to elevate your antenna design game.

🎥 Watch the video now:

Radiating towers or radio masts can be modeled in AN-SOF with a high degree of detail, as shown in this figure. Since we already know the omnidirectional shape of the radiation pattern, what interests us is to calculate electric field values at ground level for a given input power. Go to Setup tab > Near Field panel and set the desired coordinate system (Cartesian or Cylindrical: Z = 0, Spherical: theta = 90°). Go to the Excitation panel to set the input power (it is customary to set 1,000 W). To increase the conductivity of the soil and therefore the radiation efficiency, we can use a radial wire ground screen.

Regarding the feeding point, we can put a source at the position of the base insulator if the feedline will be connected there in the real life antenna. In this way, we will obtain the input impedance of the antenna, which we can then post-process (e.g. tuning house + transmission line coming from the transmitter).

To speed up the simulation, we could use a simplified model, which consists of a single vertical wire with a triangular cross section. The radiation pattern will be the same as before, but we must be careful at the feeding point.

The base of the tower in the detailed model forms a short transmission line to the source position at the tower center. In the simplified model, we can offset the source from the center a distance equal to the half width of the tower to simulate the short transmission line effect.

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