A dual-band dipole with shorting pins and slots

A simple compact dual-band dipole (48 mm × 12 mm × 0.8 mm) with shorting pins and slots is presented in this paper. The shorting pins helps to realize a compact dipole. The slots are composed of H-shape slots and comb-shape slots. The former is of help to expansion of the impedance band, and the latter to further compactness of the dipole. Its operating bandwidth is 600 MHz in the lower band and 270 MHz in the upper band, ranging from 2.17 to 2.77 GHz and from 5.63 to 5.9 GHz respectively. So it is able to be used in a 2.4/5.8 GHz WLAM system. One great advantage of the presented dual-band dipole is its good omnidirectional performance in the two bands, with roundness of ±0.18 dB at 2.4 GHz and ± 1.2 dB at 5.8 GHz.