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

Table 1

Measured gain of the patch alone and of the woodpile-covered patch, in the 8–12 GHz range (ℎ/2=45 mm).

f (GHz)	𝐺𝑝 (dB)	𝐺pw (dB)
8	−3.88	−5.96
8.5	0.09	−9.49
9	1.47	−4.11
9.5	1.85	−0.29
10	4.61	7.02
10.3	6.18	16.39
10.5	5.43	5.42
11	1.52	4.39
11.5	1.68	−16.72
12	1.24	−4.63

Results for the resonance frequency of the antenna, that is, 10.3 GHz, are reported in bold.