A New Compact Size Dual-Bands Patch Antenna Array For 5G Network Bands 3.5 GHz and 28 GHz

This paper presents a new compact size 5G patch antenna array covering both 3.5 GHz and 28 GHz bands. It is designed on a Teflon glass substrate with a size of 15 x 30 mm
²
, which makes it well suited for IoT applications. The main idea of array design is to couple a dipole antenna with several elementary wire antennas superposed on the two arms of the dipole. The proposed antenna is adapted to the [3 - 4] GHz and [26.5 - 29.5] GHz bands with resonance frequencies of 3.5 GHz and 27.65 GHz respectively. The simulated return loss is of -35 dB and -44 dB for the two resonance frequencies respectively. The antenna is pseudo omnidirectional for the [3 - 4] GHz band with a gain of 3 dBi, and directive for the [26.5 - 29.5] GHz band with a gain of 6.5 dBi.