Enhancement Bandwidth of Parasitic Microstrip Antenna Using Multiple Feed Line

This paper proposes design of parasitic microstrip antenna with multiple feed line for mobile communication applications at working frequency of 1800 MHz. The purpose of adding multiple feed line is to enhanced the bandwidth of the proposed antenna. The multiple feed line used has an impedance of 100 Ohm and is placed on the edge of the patch parasitic microstrip antenna. The optimal bandwidth of the microstrip antenna is obtained by adjusting the dimensions and position of the multiple feed line. From the simulation results obtained return loss of -15.95 dB, VSWR of 1.379 at work of frequency 1800 MHz and bandwidth of 328 MHz with a frequency range 1735 - 2053 MHz or increased 262.13% compared to parasitic microstrip antenna. From the results obtained it can be concluded that the use of multiple feed line succeeded in increasing the performance and bandwidth of the microstrip antenna.