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What materials are most suitable for constructing non-printed log-periodic dipole array (LPDA) antennas?

In non-printed LPDA designs, material selection directly affects conductivity, mechanical stability, bandwidth, and long-term durability. I want to understand which materials are typically preferred for elements, booms, and supports, and how these choices influence real-world antenna performance rather than just theoretical behavior.

 

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By Diksha Kumari Answered 1 year ago


From my experience building and evaluating non-printed LPDA antennas, I have seen aluminum emerge as the most practical choice for radiating elements due to its good conductivity, low weight, and corrosion resistance. Copper performs slightly better electrically but is heavier and less economical for large arrays. I would recommend aluminum or brass booms combined with fiberglass or UV-stable plastic spacers to maintain precise geometry without disturbing the fields. In real deployments, mechanical rigidity and environmental durability often matter more than marginal conductivity gains, especially for wideband, outdoor LPDA installations.
 
 
 

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