The design of proposed antenna is aimed for the WiMAX
application which includes frequency band of 2.3 GHz (2.3 –
2.4 GHz) and 3.3 GHz (3.3 – 3.4 GHz). Figure 6 shows that
between 2.3 GHz and 3.4 GHz, the antenna return loss is
below -10 dB, and even lower than -15 dB. Therefore, this
antenna can be implemented in WiMAX application in
Indonesia which utilizes frequency band of 2.3 GHz and 3.3
GHz. This antenna has greater than 2000 MHz bandwidth.
This is because at 4 GHz, the antenna return loss value is still
below -20 dB, as illustrated in Figure 6.