A Multiple Resonant Frequencies Circular Reconfigurable Antenna Investigated with Wireless Powering in a Concrete Block

<div>Relative permittivity of concrete for 12% moisture content [<a href="/journals/ijap/2015/413642/#B1">1</a>, <a href="/journals/ijap/2015/413642/#B12">5</a>].</div>

International Journal of Antennas and Propagation

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Figure 4

Figure 4: A Multiple Resonant Frequencies Circular Reconfigurable Antenna Investigated with Wireless Powering in a Concrete Block 