We propose a new shape for microwave planar circuits using the self-similar
ity of the fractal geometry. This new shape allows the generation of numero
us resonant frequencies for this microwave planar resonator due to the surf
ace's encasing. The resonant frequency assessment can be useful for the con
cept of filters or wide frequency band matching loads as examples, without
consuming circuit surface. (C) 1999 John Wiley & Sons, Inc.