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HF Skeleton Slot Antenna
Updated
The Skeleton Slot can be considered as an array of two tightly coupled loops. The image shows the top and bottom loops and the bi-directional pattern that is obtained. Both loops are linked to share a single feed point.
This antenna is often said to be broadband, but only the radiation pattern does not change substantially with frequency. It can operate in the 14 to 28 MHz bands with the appropriate impedance matching, but it will only be self-resonant when the perimeter of each loop is around one wavelength. In this example, each loop is 3 m x 4.5 m and the resonant frequency is 19.8 MHz.
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