Field Probes

MI-6480 Family of Field Probes

MI-6481

In making precision antenna measurements, it is desirable to determine the nature of the incident field over the test aperture. This is necessary to evaluate field variations caused by extraneous signals arriving at the test aperture. The MI-6481 Phase/Amplitude Field Probes are designed to mount to a positioner for use in evaluating the field. These Phase/Amplitude Probes offer excellent linearity to evaluate the quality of the incident phase for even the most demanding applications.

  • Designed to evaluate the quality of your antenna or RCS test zone
  • Excellent linearity for accurate phase measurements
  • Standard lengths from 4 to 14 ft (1.2 to 4.3 m)

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Each model in the family includes:

  • Phase/Amplitude Field Probe with a rack and pinion linear axis
  • Standard roll axis
  • Absorber to cover the probe (combination of 3 and 6 inch)
  • RF cable included (18 GHz, precision-N connectors)
  • Probe to Positioner interface

The MI Technologies MI-6481 Phase/Amplitude Field Probes can be mounted on MI Technologies as well as many third-party positioners. Some mounting applications may require additional adapters.

Specifications

Parameter Units MI-6481-4 MI-6481-6 MI-6481-8 MI-6481-10 MI-6481-12 MI-6481-14
Length ft
m
4
1.2
6
1.83
6
1.83
10
3
12
3.66
14
4.27
Linearity P-P in
mm
±0.003
±0.1
±0.004
±0.1
±0.004
±0.1
±0.004
±0.1
±0.004
±0.1
±0.004
±0.1
Position
Resolution
in
mm
±0.01
±0.25
±0.01
±0.25
±0.01
±0.25
±0.01
±0.25
±0.01
±0.25
±0.01
±0.25
Position
Accuracy
in
mm
±0.05
±1.27
±0.05
±1.27
±0.05
±1.27
±0.05
±1.27
±0.05
±1.27
±0.05
±1.27
Linear Speed in/s
mm/s
2
50.8
2
50.8
2
50.8
2
50.8
2
50.8
2
50.8
Roll Speed deg/s 30 30 30 30 30 30
Maximum Load
on Pol Axis
lbs
N
50
222
50
222
50
222
50
222
50
222
50
222
Maximum Load
on Pol Axis
ft-lbs
Nm
50
68
50
68
50
68
50
68
50
68
50
68