waveguide shim

waveguide shim

[′wāv‚gīd ‚shim]
(electromagnetism)
Thin resilient metal sheet inserted between waveguide components to ensure electrical contact.
References in periodicals archive ?
A desired power split at the output ports was obtained by use of an appropriately sized apertured waveguide shim at one of the output ports.
With the low impedance test samples, stainless steel waveguide shims were necessary to maintain a good impedance match, which did not effect the threshold measurement in any way.