Electrical Parameter Screens for Air Force Weapon Systems Hardness Assurance.
AIR FORCE WEAPONS LAB KIRTLAND AFB N MEX
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The objective of this program was to verify that the angle of the S21 scattering parameter could be used as a neutron hardness assurance screen at the wafer stage of integrated circuit fabrication. The objective was accomplished by interfacing commercially available test equipment, making the necessary measurements, and comparing the actual with the predicted post-radiation DC common emitter forward current gain, denoted beta. The predicted beta values were based on calculations involving the measured angles of S21. S21 is the scattering parameter or forward transmission insertion gain with the output part terminated in a matched load. If the angles of S21 are measured over the proper frequency range, it is reasonable to expect the standard deviation of percent error in beta prediction to be less than 5. Author
- Electrical and Electronic Equipment
- Nuclear Radiation Shielding, Protection and Safety