There is infinite freedom in the shapes of the
Self-Complementary Antennas
that have constant input impedance
independent of the source frequency.

One can easily think out various other self-complementary shapes.

Z≒188.4[Ω], (Balanced type)
Z≒188.4[Ω], (Unbalanced type)
The above figure shows the shape of the second type of self-complementary antenna originated by Y. Mushiake in 1948.
Axially symmetric SCA.

Z≒133.2[Ω], each.

Z≒188.4[Ω], each.
Z188.4[Ω], each.

Z≒188.4[Ω], each.



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