| 摘要 |
An improved radio frequency antenna may be manufactured and assembled in a cost-effective manner using a pair of conductive sections. A first conductive section has alternating trough and narrow portions, and an opposing second conductive section has alternating trough and narrow portions which are arranged opposite the narrow and trough portions, respectively, of the first conductive section. Each trough portion partially surrounds its opposing narrow portion. The first and second conductive sections are secured together with a gap formed therebetween such that the first and second conductive sections form an elongated unit having a first end and a second end. Each end of the unit may be terminated with a short, an open or a load between the first and second conductive sections, and a coaxial cable may be electrically coupled to the first and second conductive sections at a selected point along the length of the unit for coupling a radio frequency signal to the antenna. Alternatively, the unit may be terminated at only one end, and the other end of the unit may be used for interfacing to the coaxial cable. Further, a smaller diameter radome may be used to enclose the unit because of the compactness of the improved trough line antenna structure. <IMAGE> |
