High Gain Compact Strip and Slot UWB Sinuous Antennas

<table>Maximum gain as a function of frequency for the slot-sinuous with 200 <i>μ</i>m substrate compared with the maximum gains attained by the strip sinuous with conical ground, and the strip sinuous with concentric cylinders of varying permittivities in the backing cavity.</table>

International Journal of Antennas and Propagation

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Figure 11

Figure 11: High Gain Compact Strip and Slot UWB Sinuous Antennas 