Table 1 Electrically Small Antenna Comparisons.

²

0.645

2.03⁺

71.6⁺

directional

³

0.498

0.53⁺

75⁺

nearly isotropic

⁴

0.497

3.69*

81.88*

directional

⁵

0.46

1.77*

90.86*

nearly omni-directional

⁶

0.45

1.99*

96.8*

omni-directional

⁷

0.467

1.063*

66.5*

omni-directional

⁸

0.996

1.87*

–

omni-directional

⁹

0.629

1.33*

92.3*

directional

this work

0.415

1.43*

93*

omni-directional