Nelson Research, Inc. 2142 – N. 88 th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com...
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Transcript of Nelson Research, Inc. 2142 – N. 88 th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com...
Nelson Research, Inc. 2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
Microwave NDE Test Fixture Examples
Craig E. Nelson – Consultant Engineer
Nelson Research, Inc. 2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
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.
Nelson Research, Inc. 2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
X Band (8-12 GHz) Test Fixture for Planar DUT Samples
Waveguide Transition
Slide Screw Tuner
3 Port Circulator Tuned Diode
Detector
Aperture Table for Test Sample
“E” Bend
Nelson Research, Inc. 2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
X Band (8-12 GHz) Test Fixture for Planar DUT Samples
Waveguide Transition
Aperture Table for Test Sample
10 dB Bidirectional
Coupler“H” Bend
Nelson Research, Inc. 2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
Demountable 1 GHz Cavity Resonator with Sub-Wavelength Sensing Aperture
Cylindrical Cavity Wall
Sensing Aperture
Small Cavity
Excitation loop
Cavity Base
Assembly Cavity Top Plate
Nelson Research, Inc. 2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
Collection of Broadband, Small Aperture Coaxial “Hard-line” Microwave Sensors
Milled Aperture
Milled Aperture
Aperture Table
Nelson Research, Inc. 2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
Summary and Conclusions
An interesting variety of practical microwave NDE Microwave Test Fixtures have been presented