A design of wide band small chip antenna using the branch structure for mobile phone

In this paper, we propose the antenna which has a wideband operation (GSM850, EGSM, DCS1800, USPCS, WCDMA). This antenna is designed by using a meander branch structure which has via and lines on FR-4(ɛr=4.4) PCB. The antenna was designed by the commercial software HFSS 3-D EM simulator. The designed antennas are manufactured by PCB processing, and measured by using the network analyzer and test chamber. The antennas with the dimension of 8mm width, 20mm height and 3.2mm thickness, are applied on the internal antenna for wideband cell phones. Its size was minimized so that it can be mounted inside of a cellphone.