| 摘要 |
A log-periodic dipole antenna ( 10 ) includes a boom ( 12 ) which through insulator blocks ( 15 ) carries a plurality of elements ( 13 ) consisting of element halves ( 13 A, 13 B) which extend in opposite directions from the boom ( 12 ). Spaced transmission wires ( 38 A, 38 B) extend along the boom ( 12 ) without crossing each other and yet communicate with alternatingly opposite element halves ( 13 A, 13 B) of adjacent elements ( 13 ) in view of their connection with brackets ( 30 A, 30 B) attached to element halves ( 13 A, 13 B). The transmission wires ( 38 A, 38 B) are spaced at the point of communication with each element ( 13 ) a distance proportional to the impedance of that particular element ( 13 ) by virtue of their being attached at different locations along the brackets ( 30 A, 30 B).
|
