Antenna near-field measurements using directive probes

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Antenna near-field measurements using directive probes

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© The Institution of Electrical Engineers
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A near-field/far-field transformation procedure is described which is based on cylindrical mode expansion techniques and provides the capability for dealing with probes of any directivity. The principle of the method is demonstrated by computer simulation and the approach is validated in practice by predicting the 2-dimensional far-field patterns of slotted waveguide arrays. The near-field data is acquired with directive probes of up to 9 wavelengths in size at ranges of 0.1 D2/λ The effects of probe position errors are also discussed.

Inspec keywords: electric field measurement; probes; antenna arrays; antenna radiation patterns; waveguide antennas; digital simulation

Other keywords: probe position errors; slotted waveguide arrays; 2D far-field patterns; computer simulation; directive probes; antenna near-field measurements; near-field/far-field transformation; cylindrical mode expansion

Subjects: Communications computing; Antenna arrays; Antenna theory; Voltage measurement

References

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