| 摘要 |
A tapered, inverted-L bow-tie antenna is disclosed which includes a bow-tie antenna component connected to a central feed and having top-loading elements connected to each bow-tie half opposite the central feed. According to the invention, a series inductance is introduced between the feed and the antenna tips, and preferably at the transition between the bow-tie halves and the top-loading elements. In a preferred embodiment, the inductive loading is introduced by a buttonhook or hairpin curve in the antenna region between the bow-tie portion and the tapered portion. The added inductance reduces the capacitive reactance. The low impedance partway on stem also increases current flow, and thus the antenna's performance. The input impedance is also increased, making it easier to match the antenna to a driving hardware. The antenna can be used by itself or in combination with a log periodic dipole array. |
