Coupling between Open and Shielded Wire Lines over a Ground Plane

Convenient expressions are derived which permit accurate determination of induced interference in open (unshielded) wire and shielded wire (or coaxial) lines due to ac and transient currents. Curves and tables are presented for obtaining key parameters in the calculation of interference. The limitations of the derived expressions are set forth and an example interference problem is solved. Experimental verification of the analysis is presented.