Planar near-field antenna measurements

Planar near-field antenna measurements

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This chapter discusses the so-called planar near-field antenna test range. This implies that the planar near-field range is only a useful tool if it is used for highly directive antennas where it can be assumed that by far the vast majority of the radiated power is incident on the plane over which the data is sampled.

Chapter Contents:

  • 5.1 Introduction
  • 5.2 Near-field measurement facility
  • 5.2.1 RF sub-system
  • 5.2.2 Robotics positioner system
  • 5.2.3 Near-field probe
  • 5.3 Limitations in the accuracy of the near-field measurement data
  • 5.3.1 Mechanically based limitations
  • 5.3.2 RF system limitations
  • 5.4 Solution of Maxwell's equations in Cartesian coordinates
  • 5.4.1 Plane wave spectrum
  • 5.5 Probe pattern compensation
  • 5.5.1 Effect of the probe pattern on far-field data
  • 5.5.2 Scanning probe characteristics
  • 5.6 Plane-polar near-field antenna measurements
  • 5.6.1 Application of spectral methods to plane-polar antenna measurements
  • 5.6.2 Conventional and alternate plane acquisition types
  • 5.6.3 Plane-polar alignment
  • 5.7 Summary
  • References

Inspec keywords: antenna testing; directive antennas

Other keywords: radiated power; planar near-field antenna test range; directive antennas; planar near-field antenna measurements

Subjects: Production facilities and engineering; Single antennas

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