4.2. Shorted coplanar patch antenna
Fig.7 shows simulated input impedance of the antenna in Fig.
4 which uses two shorted rectangular patches. The simulated
impedance bandwidth (return loss 5 -10 dB) is 20.2% from
1.78 to 2.18 GHz. so with marginal adjustment it can clearly
cover the UMTS spectrum from 1885 to 2200 MHz. There