Abstract
A compact monopole-slot antenna with polarization diversity is proposed for wireless local area network (WLAN) applications. Dual polarization is provided by a ground-folded monopole and a slot cut from the folded ground. The total volume of the proposed antenna is only 50 × 16 × 16 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> (0.4 λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> × 0.128 λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> ×0.128 λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> ). However, low mutual coupling is achieved due to the orthogonal modes of current distribution on the ground. A prototype of the proposed antenna is built and tested. The obtained results include the S parameters, radiation patterns and radiation gain. The results from our presentation match with the simulation and demonstrate an isolation better than -36 dB in the required band.
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