Compact folded monopole antenna with LC-loadings

An LC-loaded folded monopole antenna including two meander-line inductors and an interdigitated capacitor was designed for a miniaturization of antenna. The operating frequency of the antenna was essentially determined by the resonant characteristics of the uniquely arranged distributed inductors and capacitor, not by the length of the radiator, so that the size of the antenna can be designed to be very small. The radiator length of the designed antenna is 0.077 ¿₀. It was also found that the effect of the size of the ground plane on the antenna performance such as resonant frequency and bandwidth is minimal.