Cable and Connector Shielding Attenuation and Transfer Impedance Measurements Using Quadraxial and Quintaxial Test Methods

Madle, P. J.

doi:10.1109/isemc.1975.7567847

Cited by 5 publications

(2 citation statements)

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“…Other elements incorporate seam construction, including chassis lap-joint or gasketed seams, threaded or keyed connectors, and bolted waveguide flanges. The latter elements exhibit joint shielding effectiveness in the range of 50 to 70 dB, when properly constructed [6,7]. The FC shielding varies significantly from program to program, but normally ranges from 20 dB to 60 dB for low noise systems.…”

Section: Radiated Indirect Emissions From Spurious Transmittersmentioning

confidence: 99%

“…For a transmit power of 50dBm (inside the waveguide), shielding of 50dB for each of the transmit and receive waveguide joints [6,7], and a path loss of 10 wavelengths (approximately 20 dB), the spurious inband receive power would be Prcv_jt = 50 dBm -20*log(4π) -50 dB -50 dB = -72 dBm (6) For a minimum threshold level of -100 dBm, this leakage would be too high and require filtering.…”

Section: Radiated Indirect Emissions From Spurious Transmittersmentioning

confidence: 99%

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Design Philosophy for a Satellite with Extremely Low Radiated Emissions Requirements

Elkman

Tettemer

Hungate

2007

2007 IEEE International Symposium on Electromagnetic Compatibility

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Trends in RF performance requirements for contemporary spacecraft are driving vehicle design to achieve extremely low RF emissions levels due to unintentional sources. This paper describes an approach to achieving very low spurious RF emissions in spacecraft by identifying, predicting and controlling emissions sources during architecture development. The approach incorporates detailed, tailored analysis and test methods used to verify performance compliance. Specific test results are discussed in the context of showing the effectiveness of this design approach in meeting tailored MIL-STD-461E radiated emissions limits.

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Section: Radiated Indirect Emissions From Spurious Transmittersmentioning

confidence: 99%