Design of wideband microstrip antenna with parasitic element for 4G/LTE application

Abstract

This paper discuses the design of wideband microstrip antenna which is for mobile communication especially for 4G/LTE application. The 4G/LTE applications use frequency bands 850 MHz, 900 MHz, 1800 MHz, and 2300 MHz. Therefore, an alternative to support all these bands in one antenna is to design a wideband antenna. To achieve the antenna specification that has the characteristics of wideband, one of the methods that can be used is to add parasitic elements in a rectangular microstrip patch antenna. The antenna design uses FR4 substrate with a dielectric constant of 4.6 and substrate thickness 1.6mm. Ground plane, feed line, patch and parasitic elements using copper material with a thickness of 0.035mm. By using this technique, frequency band is obtained at 793.66 MHz up to 2501.34 MHz and have a bandwidth of 1707.64MHz. Approaching omnidirectional radiation pattern is obtained at the frequency of 850–900 MHz and significant changes in the 1800–2300 MHz frequency. Gain increases with increasing operating frequency. The highest gain in the range of 1800–2000 MHz is 4.47 dB. With the characteristics of this antenna, the result of the antenna design can be used for 4G/LTE application.