摘要

In this paper, a broadband compact folded monopole antenna is proposed for mobile applications. The antenna is a simple structure of a folded rectangular patch with a slit, which occupies only a small space of 7 x 12 x 4 mm(3) (0.054 lambda(L) x 0.092 lambda(L) x 0.031 lambda(L) at lower frequency edge of 2.3 GHz) on the top of no-ground portion of the substrate. The proposed antenna achieves a 10-dB impedance bandwidth of 49.2% ranging from 2.3 GHz to 3.8 GHz, which can cover the 2.4 GHz WLAN (2.4-2.4835 GHz) and WiMAX (2.3-2.4/2.495-2.69/3.4-3.6 GHz) operational bands. The low profile structure and broadband operation make the antenna a promising candidate for applications in mobile phones.