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The use of wireless or wireless communication technology is currently growing rapidly. To establish a wireless communication device, an antenna is needed to send and receive electromagnetic waves or signals during the data transmission process. In this research we undertook simulation, fabrication, parameter and distance testing for data communication at 2.4 GHz frequency. To achieve the above objective, first we made an antenna.TThe antenna dimensions were designed based on antenna formulas and then simulating with the CST Studio Suite. Second, we fabricated Microstrip antennas senders that could work well in the 2.4 GHz frequency with return loss = -12.06 dB, VSWR = 1.692, impedance = 38.35Ω ohms. While the 4x1 fabricated microstrip array antenna was designed to operate at 2.4 GHz frequency with return loss = -19.41 dB, VSWR = 1.235, impedance = 54.77 ohms. That is, the two microstrip antennas are suitable for use at 2.4 GHz frequency and in accordance with the expected specifications. The test using module Xbee PRO S2C and Xbee S2C . Result showed that communication runs smoothly that is able to send and received data properly.. Keywords—antenna; return loss; impedance, distance

Design Of Modified Microstrip Antenna And 4x1 Microstrip Array For Data Communication At 2.4 GHz Frequency