Radiation-Enhancement Properties of an X-Band Woodpile EBG and Its Application to a Planar Antenna

<table>Return loss of the patch antenna with a cover constituted by two woodpile layers, resonating at 13.24 GHz, compared with the return loss of the patch alone; the distance between patch and woodpile is <svg height="15" id="M192" style="vertical-align:-2.22495pt" version="1.1" viewbox="0 0 59.799999 15" width="59.799999" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> mm.</table>

International Journal of Antennas and Propagation

fig25

Figure 25

Figure 25: Radiation-Enhancement Properties of an X-Band Woodpile EBG and Its Application to a Planar Antenna 