Table 2 Comparison of the \(\gamma\) required to regain the far-field condition throughout different ripple level and error tolerance criteria.

From: Null-filling effects over measurement distances on circular Taylor patterns with optimal transition integer \(\overline{n}\) and with reduced inner sidelobes

Ripple level

Minimum \(\gamma\) over 0.5 dB

Maximal \(\gamma\) over 0.5 dB

Minimum \(\gamma\) over 1.0 dB

Maximal \(\gamma\) over 1.0 dB

± 0.50 dB

0.8

7.1

0.6

3.8

± 1.00 dB

0.9

7.2

0.7

3.8

± 1.75 dB

1.0

7.0

0.8

3.7

± 2.00 dB

1.2

6.5

0.9

3.4

± 2.50 dB

1.2

5.8

0.9

3.2

± 4.25 dB

1.4

4.9

1.1

2.7

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