| 摘要 |
<p>The antenna apparatus may include a planar, electrically conductive, slot antenna element having a geometrically shaped opening therein defining an inner perimeter, and a pair of spaced apart signal feedpoints along the inner perimeter separated by a distance of one quarter of the inner perimeter to impart a traveling wave current distribution. The inner perimeter of the planar, electrically conductive, slot antenna element may be equal to about one operating wavelength thereof. The antenna apparatus may provide at least one of linear, circular, dual linear and dual circular polarizations, and it may provide an in situ or conformal antenna for vehicles or aircraft.</p> |
