| 摘要 |
An ultra wide band antenna using a parasitic loop is provided to be suitable for an ultra wide band communication by reducing a change of a pass property and a gain of a concern frequency domain. An ultra wide band antenna comprises a dielectric substrate(200), a radiation patch(201), a parasitic loop(204, 205), a CPW(Coplanar Waveguide) feeder(202), and a CPW ground surface(203). The radiation patch of a monopole structure is positioned in a center of the dielectric substrate. The parasitic loop is symmetrical around the radiation patch, and induces an ultra wide band property. The CPW feeder is connected to the radiation patch. The CPW ground surface is symmetrical around the CPW feeder. The parasitic loop is positioned on a front of a rear of the dielectric substrate, and one among an opened loop structure or a closed loop structure. |
