Measurement Devices

 

Coax Electromagnetic Sample Holders

  • Designed to eliminate or minimize two major sources of measurement error:
    • Sample fit (gaps between the inner and outer conductors)
    • Sample Position (accurately knowing the distances to the sample faces)
  • The design still defines the state-of-the-art (SOA)

[MORE INFO]

7mm Coax Sample Holder (< 18 GHz)

1 5/8" Coax Sample Holder (< 3 GHz)

3 1/8" Coax Sample Holder (< 1.5 GHz)

 

  • GAPs has a next generation concept that will also easily allow coaxial discontinuity measurements to be made eliminating the need for the center conductor (simplifying sample preparation)

 

 

Dielectric/Magnetic NDT Probe

  • Enhancing the existing open-ended waveguide dielectric probe to allow it to be used with magnetic materials as well
  • Allows nondestructive broadband interrogation of the magnetic character of materials by measuring the response with and without an externally applied magnetic field
  • The frequency response (signature) is influenced by
    1. material electromagnetic properties (e, m)
    2. structure
    3. physical defects
  • Unique conformal tip allows the probe to be used with uneven/curved surfaces  

 Modified 1990's Presentation (pdf)

 

Various Size Dielectric/Magnetic Probes

Conformal Tip Using Spring Loaded Test Pins

 

Stripline Resonant Cavities

  • Novel dimensionally stable design hanging from a movable frame (in collaboration with mechanical engineer Ron Huer)
  • Unique design for heating/cooling only the sample region with negligible effect on the cavity dimensions (i.e., geometric resonance frequency)

75 MHz Variable Temperature Stripline Resonant Cavity

    

Parallel Plate Dielectric Sample Holder (GR1690A)

 

  • Devised a new approach to correct for parasitics allowing more accurate measurements over a wider frequency region

 

General Radio 1690A Dielectric Sample Holder


 
 
 


© 2005 General Applied Physics Solutions. All Rights Reserved.
  HOME · COMPANY · CONTACT