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      �No one can expel us from the paradise created by Cantor.�

~ David Hilbert

For further reading:

1. "Fractal Stacked monopole antenna with very wide bandwidth", Electronics Letter Vol 35, No. 12, pp 945-946, 1999

2. "Serpinski monopole antenna with controlled band spacing and input impedance", Electronics Letter Vol 35, No.13, pp1036-1037, 1999

3. "Multi-circular loop monopole antenna ", Electronics Letter Vol 36, No.5, pp391-393, 2000

4. "Quasi-Log Periodic Circular Ring Monopole Antenna", AP2000 conference, Davos, Switzerlan, 2000.
Links to other fractal antenna sites

 

Koch curve dipoles

 

 

 

The Koch dipoles can be appreciated as a series of curves and bends, these fractal dipole antennas are no longer having the same impedance as a common dipole antenna. By transforming the input impedance to 95 ohms for the 3rd iteration Koch square curve, an extremely wideband match was achieved from 5GHz to 20GHz.

Many thanks to N.Cohen (Fractennna) for the discussion and suggestion

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Stacked Sierpinski carpet antenna

 

 

 

 

This is a parallel feed stacked fractal antenna using the square Sierpinski and diamond Sierpinski carpet. The design achieves a good input impedance match throughout the passband (1GHz to 20GHz). The patterns are however not invariant of its impedance bandwidth. Gain of these antennas are generally above 0dBi.

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Miniaturise wideband monopole

 

 

 

A novel monopole design achieving a bandwidth of over 50%. The overall height of the monopole is reduced to approximately 0.07lamda. The triangular monopole is designed with the characteristics of the Sierpinski gasket fractal iteration.

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