A fractal expanded antenna with the configuration of a triangular microstri
p patch antenna is presented. In the fundamental and higher mode of the TFA
(triangular fractal antenna), resonant frequencies are controlled by chang
ing the scaling factor. The expansion and concentration phenomena of resona
nt frequencies are observed with the variation of the scaling factor: The r
esonant frequency in each fractal patch element is observed log-periodicall
y. (C) 2000 John Wiley & Sons, Inc.