A Wire Passing by a Circular Aperture in an Infinite Ground Plane.

摘要

A procedure is given to calculate the elements of an equivalent circuit representation of an aperture in an infinite ground plane for a cable passing by the aperture and parallel to the ground plane. For an electrically small hole whose linear dimensions are much smaller than the shortest distance between the hole's center and the wire, explicit simple working formulas are obtained for all the elements (impedances and generators) in the equivalent circuit. When the restriction on the hole's size relative to the distance from the wire is removed, explicit but somewhat complicated expressions for the equivalent generators are derived. These expressions are plotted against various pertinent length parameters of the geometry of the problem. (Author)