Enhanced-bandwidth printed inverted-F antennas for multimedia sensor networks operating in the 2-3 GHz range

Abstract

We designed low-cost, wideband, printed inverted-F antennas at 2–3 GHz according to the size and bandwidth constraints of multimedia sensor networks. We used a slotted structure to excite two frequency-adjacent modes; herein we present the performance comparison of three such slotted antennas. A suitable scalar quantity is used for the comparison of overall performance. Antenna performance depends heavily on electrical size, which depends on the size of the ground plane. Our results show that Euclidean and fractal slot topologies can reduce size and augment bandwidth, but at different scales, and large ground planes do not warrant for better performance.