Brandon Heavey and John Paden

1
Slotline Measurements

• Brandon Heavey and John Paden
• Nov. 04, 2002

2
Slotline

• Sketch setup on chalkboard
• Adapters and slotline
• Slotline is 17.35 cm long
• Using nylon/wax to keep sand from getting into
  air-dielectric coax feeds to slotline.

3
Adapters
4
Slotline with Air
5
Slotline with Sand
6
Slotline with Sand
7
Results

• Length of slotline
• Using S21 0.2585 m
• Using ruler 0.2535 m
• Dielectric
• 2.4 using reflections in S21
• 2.36 using phase (time-gated and not time-gated)

8
Future Work

• Implement recursive least squares algorithm
  described in Carl Leuschens IGARSS 1999 paper to
  determine ? and ?.