Fractal is a design of the complex geometry of which is composed of the geometry of the same size just in a different scale different, this is usually referred to as the 'self-similar' or 'self-symetric'. In addition to the form of geometry, the design could also form patterns that are always repeated, this is usually called the 'initiator' or 'generator'.










There are many mathematical structures that is a form of fractal are Sierpienski's gasket, Cantor's comb, von Korch's snowflake, the Mandelbrot set, the Lorentz attractor, and others. Fractal also described the objects in nature is like a cloud, mountain, coastal beaches and others, where they are not identical with the form of a simple wake geometry.

Can be defined so that the fractal is an antenna that utilizes principles of geometry or the repetition of patterns in a particular the size of the scale is different, so can a radiation electro magnetic energy to the air or vice versa can also catch the electro magnetic energy in the air.

Fractal antenna can work multiband, where the key factor is the ability of because the pattern is repeated several times with a different size scales - different. Because of this reason, the fractal antenna is very concise and suitable for the purpose multiband or wideband and very useful in microwave communications and mobile phone.