Absorption Efficiency and Physical Bounds on
Antennas

<table>The reflection coefficient of the idealized dipole antenna (<a href="https://static.hindawi.com/articles/ijap/volume-2010/946746/figures/#EEq4">4</a>) for <svg height="16.450001" id="M65" style="vertical-align:-3.3907pt" version="1.1" viewbox="0 0 66.349998 16.450001" width="66.349998" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> as function of the normalized wavelength <svg height="16.450001" id="M70" style="vertical-align:-3.3907pt" version="1.1" viewbox="0 0 114.1875 16.450001" width="114.1875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>.</table>

International Journal of Antennas and Propagation

Absorption Efficiency and Physical Bounds on Antennas

Figure 1