Miniaturized folded-slot: an approach to increase the bandwidth and efficiency of miniaturized slot antennas

A new miniaturized folded slot antenna is presented as an improved design for miniaturized slot antennas. It demonstrates wider bandwidth and higher radiation efficiency than our previous design (see Sarabandi, K. and Azadegan, R., Antennas and Propagation Society, 2001 IEEE Int. Symp., vol.4, p.446-9, 2001). By fixing the size of the new design to 0.06λ₀×0.06λ₀, which is almost the same as dimensions as the previous design, the bandwidth of the antenna is increased by 100% with a slight increase in the gain of the antenna.