What are the reason for embossed edges in Antennas?

Hello Experts.

What are the reason for embossed edges in Antennas?

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The only thing I can guess about is lowering the wind load by redirecting the wind, instead of facing it.

According to chatGPT, ehe embossed edges, also known as serrations or corrugations, serve to alter the radiation pattern of the antenna. By strategically shaping the edges, the antenna can focus or steer the electromagnetic waves in specific directions. This helps in minimizing interference from unwanted signals and optimizing the antenna’s efficiency in communicating with targeted devices or base stations. Essentially, the design of these edges influences the antenna’s ability to transmit and receive signals more effectively in the intended directions.

Check this (and download paper):

Wind load tests - Optimized antenna design results in lowered wind load

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So our conclusions were:

  1. The embossed edges on the antenna panel are there to reduce windload.
  2. ⁠ChatGPT cannot be trusted as a reliable source of information (its full of sh*t).
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