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

Schade, N.F.; Obara, M.; Dixon, David S.

doi:10.1109/isemc.1990.252779

Cited by 3 publications

(2 citation statements)

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“…The intended application is marine vessels, and these cables have a thicker outer dielectric than conventional cables. The iris ring gland is considered as a basic solution [50], and is assumed to create a long-term, high performance, electrical connection between a cable (or conduit) and the connector. The iris ring is a coil spring bent into a circle with the ends joined.…”

Section: Test Resultsmentioning

confidence: 99%

“…Different glands, or cable screen adapters, are needed for every possible combination of cable and stuffing tube size. Therefore shipyards and system integrators may have to stock a huge number of these glands and adapters, which is increasing costs [50]. Equipment placed in below deck regions are not exposed to a high-intensity salt and humid climate, and commercial off the shelf (COTS) connectors could be sufficient.…”

Section: Commercial Off the Shelf Connectorsmentioning

confidence: 99%

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Effect of gland quality on the screening effectiveness of cable-connector assemblies

Deschenes

Bijman

Leferink

2015

2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)

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An extensive number of standards provide various transfer impedance requirements and test methods for individual cables, but just a few are related to connectors. Only two standards describe how to test cable-gland-connector-receptacle assemblies. The cable-gland-connector-receptacle assembly has significant effects on the total considered impedance chain. In general the supplier for cable, gland and connector is different. For the introduction of commercial off the shelf connectors tests were performed on connectors and cable-connector sets, and inconsistent results were observed, showing extremely high transfer impedance, thus poor screening effectiveness. It is shown that the transfer impedance of such glands is greatly dependent on its shape, and how glands are mounted.

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Section: Test Resultsmentioning

confidence: 99%

Section: Commercial Off the Shelf Connectorsmentioning

confidence: 99%

Effect of gland quality on the screening effectiveness of cable-connector assemblies

Deschenes

Bijman

Leferink

2015

2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)

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Total cable EM environmental protection using an internally protected universal ground adapter (IPUGA)

Dixon

Proceedings of IEEE Symposium on Electromagnetic Compatibility

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Today's ''noisy" commercial electromagnetic environment (EME) sometimes approaches the higher level and potentially hostile environments traditionally encountered by some military equipment. The need to operate either commercial or military electronic equipment's in the vicinity of these high level environments provides an incentive to develop an internally protected universal ground adapter that will provide electromagnetic inteqerence (EMI) protection for both c -all of its internal conductors. To ensure adequate system performance in this environment, the electromagnetic compatibility (EMC) engineer is often required to isolate noisy EM environmental areas from susceptible equipment or their cables. This isolation is often accomplished by establishing an effective "Faraday shield, metallic boundary" around sensitive electronics equipments and systems. Sucha metallic boundary occursat environmental inteqaces, such as those that occur with portable enclosures or vans, vehicles, buildings, ships, as well as externally mounted electriclelectronic cabinets and junction boxes. To practically implement this Faraday shieldit is necessary to "treat" all cables andconductors thatpenetrate this Faraday shield. An improved technique to accomplish this could use a recently patented ' grounding device, the universal ground adapter (UGA). This UGA shunts all excessive EM energy being conducted on either cable shields or conduits into the groundplane or Faraday shield. The UGA however provides EM protection to only the outer (shield) portions of the cable or conduit. To completely protect sensitive components or circuits within this Faraday shield it will be necessary to add internal breakdown protection on all conductorspassing through this device. This will minimize or eliminate all higher level undesirable signals, (unwanted conducted energy) from transiting the Faraday shield.To support this internal conductor grounding requirement, an "internally protected" universal ground adapter (IPUGA)' was developed that offers protection to both ground lines (i.e., shields, braids, armors and conduits, etc.) and signal, control andlor power lines (i.e., any and all internal metallicconductors) thatpenetrate thelPUGA. Thisprotection to all signal conductors is achieved without efsecting the design peqormance of any electrical or electronic system to which the cable is connected. Under normal conditions the proper high impedance between all conductors is maintained. During exposure to high level energy this high impedance, dielectric material temporarily becomes a short to the IPUGA body, thereby shunting all energy on internal conductors harmlessly into the ground plane. The IPUGA concept will be explained by this paper. BacksoundAs shown in Figure 1, a metallic boundary is typically established by EMI and EMP personnel to protect electronic equipment from both high level electromagnetic (EM) fields as well as ground plane currents. These EM fields can be created in peacetime by lightning and nearby communication transmitters or in ...

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The Effect of Corrosion on the Shipboard Performance of EMI/EMP Ground Adapters: Original and Improved Design Concepts

Dixon¹

1992

CORROSION

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

Cited by 3 publications

References 1 publication

Effect of gland quality on the screening effectiveness of cable-connector assemblies

Effect of gland quality on the screening effectiveness of cable-connector assemblies

Total cable EM environmental protection using an internally protected universal ground adapter (IPUGA)

The Effect of Corrosion on the Shipboard Performance of EMI/EMP Ground Adapters: Original and Improved Design Concepts

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