Flexible Hilbert-Curve Loop Antenna Having a Triple-Band and Omnidirectional Pattern for WLAN/WiMAX Applications

Figure 12

Variation of the antenna factor 𝐾 at ϕ = 0° (xz-plane) for the proposed flexible Hilbert-curve loop antenna and rectangular loop antenna. (a) 2.45 GHz, (b) 3.35 GHz, and (c) 5.5 GHz.

(a)

(b)

(c)