Ultra-Wideband Full Duplex Antenna for 5G Applications

This paper presents an ultra-wideband full-duplex antenna for 5G applications. The proposed antenna comprises a pair of microstrip patch antennas as transmitter and receiver parasitically loaded with the third patch to enhance isolation. Loading stubs obtain the ultra-wideband response in the microstrip patch antennas, which introduce additional resonances. Two shorting pins are incorporated in order to improve the impedance matching. The proposed antenna operates in a frequency band ranging from 25-40 GHz with resonances at 28 GHz, and 38 GHz and offers isolation ranging from 17 to 34 dB within this frequency range.