Improving Performance and Size Reduction of Truncated Microstrip Antenna Using U Slot for LTE Application

This paper proposed new design of truncated microstrip antenna with U slot for LTE application at work frequency of 2300 MHz. The addition of slot with U shape aims to reduce return loss and VSWR from antenna, beside that giving U slot also can reduce the dimension of antenna to be more compact. The proposed antenna have been design. The proposed antenna, designed and realized using a FR4 Epoxy substrate with a dielectric constant (εr) of 4.3, a thickness (h) of 1.6 mm and a loss tan (tan α) of 0.0265 . From the measurement result obtained return loss of -22.95 dB and VSWR of 1.1.5 at working frequency of 2300 MHz with bandwidth of 250 MHz (2100 -2350 MHz). The addition of U slot has been successfully improved the value of return loss until 43 % and VSWR until 15 % compared with truncated microstrip antenna without U slot. Beside that, the dimension of microstrip antenna have been reduced until 17.87 % after using U slot.