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Usually, theory provides no finite answer to technical professionals. Validation is required. That is why Magnetic Shield Corporation has developed practical methods of evaluating performance. Evaluation begins with our Co-NETIC® Slide-Rule Calculator to determine alloy thickness required to attenuate unwanted fields. However, the slide-rule is based on mathematics derived for specific cylindrical shaped shields; therefore it is necessary to further evaluate using our "hands-on" developmental Lab Kits to provide real evidence of success.
To determining possible attenuation ratios (A), we have developed an automated, online calculator. Simply input the estimated shield size (diameter in inches) and measured source field strength (gauss value); then click on the calculate button. The online calculator will return possible attenuation ratio values for various shielding alloy thicknesses. Now you can see the thickness of material required, and its effectiveness (attenuation ratio).
Radio Frequency (RF) Shielding