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Journal Articles Open Journal of Antennas and Propagation Year : 2022

Comparative study of the performances of opaque and transparent patch antennas

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Abstract

The performances of two microstrip patch antennas with low visual impact are presented in this paper and compared to an opaque solution. These consist in a copper film deposited on a Borofloat 33 glass substrate through a thin titanium gripping layer. The mesh is obtained by wet chemical etching. Antennas differ by the dimensions in the ground plane mesh pattern. The opaque antenna only consists of a full copper deposit. The transparency work was mainly carried out on the ground plane as it is the largest area available. Specific attention is paid to optical transparency in the visible light spectrum, sheet resistance and electromagnetic performances in the [2.8; 3GHz] bandwidth. They are measured in each case, compared and discussed. Both simulations and measurement results show good performance, especially the antenna with the most transparent ground plane: A high level of optical transparency of almost 73%, coupled with a sheet resistance of less than 0.028 Ohms/sq and a gain of about 3.22dBi at 2.8GHz, slightly higher than the gain of the reference opaque antenna of about 2.66dBi at 2.99GHz. The opaque reference antenna has a bandwidth of 1.30 GHz while those of the transparent antennas are about 1.60 GHz and 2.10 GHz (S11< -10dB). This solution presents a real interest for low cost integrated and discrete antenna solutions in ISM band.

Dates and versions

hal-03652281 , version 1 (26-04-2022)

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Abdoulaye Sissoko, Anne Chousseaud, Tchanguiz Razban, Marc Brunet, S. Ginestar, et al.. Comparative study of the performances of opaque and transparent patch antennas. Open Journal of Antennas and Propagation, 2022, 10 (2), pp.17-28. ⟨10.4236/ojapr.2022.102002⟩. ⟨hal-03652281⟩
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