Creating a Braided Cable Shield Layer (Kley)

Create a single layer, braided (Kley) cable shield. The relevant braid parameters, weave metal and braid-fixing materials (optional) are specified and the Solver determines the frequency-dependent impedance (Zs + Zt) and admittance (Yt) matrix using the Kley formulation.

The Kley formulation models the coupling mechanism accurately due to the field penetration through the shield apertures.
  1. On the Cables tab, in the Definitions group, click the  Cable Shield icon.
  2. Under Shield layer(s), click Single to create a single-layered shield.
  3. On the Inner layer tab, on the Impedance definition tab, from the Definition method drop-down list, select Braided (Kley).
    Figure 1. The Create Cable Shield dialog.


  4. Under Weave, specify the following:
    1. From the Definition method , select Weave angle to create a braided layer using the weave angle definition:
      • In the Weave angle (degrees) field, enter a value in degrees for the nominal weave angle.
      • In the Deviation (+/-) (degrees) field, enter a value for the deviation of the weave angle from the nominal weave angle in degrees.
    2. From the Definition method , select Optical coverage to create a braided layer using the optical coverage definition:
      • In the Minimum optical coverage (%) field, enter a percentage for the minimum optical coverage for the braided layer.
    3. In the Number of carriers (m) field, specify the number of carriers in the braided layer.
  5. Under Filaments, specify the following:
    1. In the Number of filaments (n) field, enter a value for the number of filaments in a single carrier.
    2. In the Diameter (d) field, enter a value for the filament diameter.
    3. In the Filament metal , select one of the following:
      • To create a filament consisting of PEC, select Perfect electric conductor.
      • To create a filament consisting of a predefined metal, select the metal.
      • To create a filament consisting of a metal, which is not yet defined in the model, select the icon to define a metal or add a metal from the media library.
Note: The Thickness of a Kley shield layer is 2.5 times the filament diameter (d).
  1. On the Inner layer tab, on the Admittance definition tab, from the Definition method drop-down list, select Same as impedance definition to use the Kley formulation for the admittance matrix.
    Figure 2. The Create Cable Shield dialog.


  2. Under Braid-fixing materials, select one of the following:
    • To apply an inside and outside braid-fixing material, select the Apply braid-fixing material check box.
      • To add an inside and outside braid-fixing material consisting of a predefined dielectric, select the dielectric.
      • To add an inside and outside braid-fixing material consisting of a dielectric, which is not yet defined in the model, click the icon to define a dielectric or add a dielectric from the media library.
    • To remove the braid-fixing material, clear the Apply braid-fixing material check box.
    Figure 3. A 3D representation of a cable containing a braid (on the left) and a cross-section of the cable showing the inside braid-fixing material and the outside braid-fixing material (on the right).


  3. In the Label field, add a unique label for the cable shield.
  4. Click Create to create the cable shield and close the dialog.