A Small Broadband Antenna for Wibro/WLAN/Mobile WiMAX

Abstract

In this paper, we propose a small broadband antenna for mobile device. The proposed antenna consists of a printed rectangular monopole antenna and a parastic element connected to ground using narrow meander line and it is designed on a FR-4 substrate that has a thickness of 0.8 mm and a dielectric constant of 4.4. The FR-4 substrate's size is 50 mm×90 mm comparable to the real mobile device. The fabricated antenna's size is 12.5 mm×10.5 mm×0.8 mm and the measurement shows -10 dB return loss bandwidth of 2,200∼6,000 MHz and gains of 2.86∼4.01 dBi. Accordingly, the proposed antenna can support mobile device for WiBro(2,300∼2,380 MHz), WLAN(IEEE 802.11b/g/n: 2,400∼2,480 MHz, IEEE 802.11a: 5,150∼5,825 MHz), and mobile WiMAX(IEEE 802.16e : 2,500∼2,690 MHz, 3,400 ∼3,600 MHz) service bands.