Broadband CPW-Fed Planar Koch Fractal Loop Antenna

A broadband Koch fractal loop antenna configuration with a novel Coplanar Waveguide (CPW) feed is presented. Impedance matching is achieved by a radial stub loaded CPW feed, which acts as a lumped matching circuit. Experimental results show that the antenna has 2:1 VSWR bandwidth of about 19% operating in the frequency range of 1.26 GHz-1.52 GHz and 3:1 VSWR bandwidth of 57% has been measured in the frequency range of 1.21 GHz-1.99 GHz. The antenna exhibits well-defined radiation patterns over the band.

[1]  N. Lenin,et al.  Broadband printed square slot loop antenna , 2005, 2005 IEEE Antennas and Propagation Society International Symposium.

[2]  Jordi Romeu,et al.  Small but long Koch fractal monopole , 1998 .

[3]  Jordi Romeu,et al.  On the behavior of the Sierpinski multiband fractal antenna , 1998 .

[4]  D. Werner,et al.  The theory and design of fractal antenna arrays , 1999 .