I Agree - Nearfield Systems Inc.

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Far-field Expressionst ( k , k )A x y=Ε( k , k )A x yCos( θ )t ( k , k ) =E x yΕ( k , k )E x yCos( θ )July 2007 8
Far-field Expressions – Arbitrary Planert,( θφ)=rΕ,( θ φ )cosΘ( )cos( )Θ =rkrkv• em⎡sin( θ)cos( φ)⎤ ⎡sin( θm)cos( φm)⎤=⎢sin( θ)sin( φ) ⎥ ⎢sin( θm)sin( φm)⎥⎢ ⎥• ⎢ ⎥⎢⎣ cos( θ ) ⎥⎦ ⎢⎣ cos( θm)⎥⎦( m) ( m)( m) ( m)( θ ) θ= sin θ cos φ sin( θ)cos( φ)+ sin θ sin φ sin( θ)sin( φ)− cos cos( )mJuly 2007 9
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 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 and 22: SNF Angular Span Sensitivity - cont
Page 23 and 24: PNF Probe to AUT separation distanc
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

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