I Agree - Nearfield Systems Inc.
I Agree - Nearfield Systems Inc. I Agree - Nearfield Systems Inc.
PNF Probe to AUT separation distanceAmplitude of the backprojected data fordifferent probe to AUTseparation distances.Dip should be at60mm.0.0-2.5-5.0Hologram amplitude of Array04_003.dat0 Lmbd 1 Lmbd 2 Lmbd 3 Lmbd 5 LmbdAmplitude (dB)-7.5-10.0-12.5-15.0-0.075 -0.050 -0.025 0.000 0.025 0.050 0.075X (meters)July 2007 22
PNF Probe to AUT separation distance IIPhase of the backprojected data fordifferent probe to AUTseparation distances.Dip should be at20mm.0-10-20-30-40Hologram phase of Array04_003.dat0 Lmbd 1 Lmbd 2 Lmbd 3 Lmbd 5 LmbdPhase (deg)-50-60-70-80-90-100-0.05 -0.04 -0.03 -0.02 -0.01 0.00 0.01 0.02 0.03 0.04 0.05Y (meters)July 2007 23
- Page 2 and 3: Overview• Prior work• Simulatio
- Page 4 and 5: Planar Near-field ScanJuly 2007 4
- Page 6 and 7: Back Projection( )( , , ) ( , )iγ
- Page 8 and 9: Far-field Expressionst ( k , k )A x
- Page 11 and 12: Simulated array radiators.13 Elemen
- Page 13 and 14: Orthogonal near-field pattern cutsN
- Page 15 and 16: Single element with reversed phase1
- Page 17 and 18: SNF Radial Distance Sensitivity I
- Page 19 and 20: SNF Angular Span Sensitivity• < H
- Page 21: SNF Angular Span Sensitivity - cont
- Page 25 and 26: PNF Amplitude sensitivity IHologram
- Page 27 and 28: PNF Amplitude sensitivity IIHologra
- Page 29 and 30: Conclusions I• SNF back projectio
- Page 31: Limitations• The data presented h
PNF Probe to AUT separation distanceAmplitude of the backprojected data fordifferent probe to AUTseparation distances.Dip should be at60mm.0.0-2.5-5.0Hologram amplitude of Array04_003.dat0 Lmbd 1 Lmbd 2 Lmbd 3 Lmbd 5 LmbdAmplitude (dB)-7.5-10.0-12.5-15.0-0.075 -0.050 -0.025 0.000 0.025 0.050 0.075X (meters)July 2007 22
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