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Microwave NDE Test Fixture Examples. Craig E. Nelson – Consultant Engineer. When I got interested in microwave non-destructive and more-or-less non-contacting testing of porous silicon, I began to make up a variety of suitable test fixtures.

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microwave nde test fixture examples
Microwave NDE Test Fixture Examples

Craig E. Nelson – Consultant Engineer

slide2

When I got interested in microwave non-destructive and more-or-less non-contacting testing of porous silicon, I began to make up a variety of suitable test fixtures.

These devices were assembled from bits and pieces of microwave hardware that were obtained piecemeal over time. Despite the home-brew nature of these devices, they worked fairly well.

slide3

3 Port Circulator

Tuned Diode Detector

“E” Bend

Slide Screw Tuner

Waveguide Transition

Aperture Table for Test Sample

X Band (8-12 GHz) Test Fixture for Planar DUT Samples

slide4

Waveguide Transition

Aperture Table for Test Sample

10 dB Bidirectional Coupler

“H” Bend

X Band (8-12 GHz) Test Fixture for Planar DUT Samples

slide5

Sensing Aperture

Cavity Base Assembly

Cavity Top Plate

Small Cavity Excitation loop

Cylindrical Cavity Wall

Demountable 1 GHz Cavity Resonator with Sub-Wavelength Sensing Aperture

slide6

Aperture Table

Milled Aperture

Milled Aperture

Collection of Broadband, Small Aperture Coaxial “Hard-line” Microwave Sensors

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Summary and Conclusions

An interesting variety of practical microwave NDE Microwave Test Fixtures have been presented