Experimental test of epoxy resin as a radome for patch antennas

J.G. Vera-Dimas, M. Tecpoyotl-Torres, J.A. García-Limón, C. A. Ochoa Ortiz Zezzatti
Procedia Engineering, Volume 35, 2012


In this paper, experimental tests are realized in order to probe the feasibility of the epoxy resin use as patch antenna radome. The interest in this material is due to its low cost and availability, two desirable characteristics for the prototypes fabrication.

At first, the effect of three pieces of epoxy resin of different colors as interference objects between a receiver and a transmitter antenna is analyzed, that means, their effect on the electromagnetic wave propagation. After, a manufacturing repeatability test was performed, in order to obtain the standard deviation and variance of the measurements with different antennas. Finally, the measurements of S21 parameter were realized considering patch antennas with and without radome made of epoxy resin, in order to analyze its effect on the antenna performance. Radomes were manufactured with two different depths to observe the corresponding changes.

The obtained results allow us to confirm the feasibility of this material to cover the patch antenna, in order to protect them especially from the oxidation produced by the environment. Additionally, the use of colorant hides the antenna geometry to the user, which is recommendable for commercial purposes.

In conclusions, the radome influence is identified mainly in three characteristics of the antenna performance.

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