Using the MIL-C-38999 test fixture and an S-parameter test set tomeasure the transfer impedance of a new universal ground adapter

摘要

In the course of developing a shield ground adapter (SGA), twodeficiencies were found: existing technology ground adapters requireshipyards to stock large numbers of ground adapters of different sizesand style, and the frequency range of the test fixture is limited. NUSChas developed a ground adapter that works equally well with differentcables, conduits, and stuffing tubes in a wide range of different sizecombinations. In conjunction with this development the modifiedMIL-C-3899 triaxial test fixture has been combined with a networkanalyzer S-parameter test set to extend the usable frequency range andsensitivity of the test method to one GHz. An added benefit of the UGA(universal ground adapter) is the ability to connect various sizes ofconduits from various vendors to ground using a minimum number ofstocked parts. The new transfer impedance test method developed alongwith the UGA effort will be used to verify the EMP (electromagneticpulse) performance of Navy shipboard conduits and fittings