A Dual-Band Dual-Polarised Stacked Patch Antenna for 28 GHz and 39 GHz 5G Millimetre-Wave Communication

Rapid developments in wireless communications demand an antenna that can operate at dual frequency bands in a compact size. In this work, a dual-band dual-polarised antenna is proposed for future 5G wireless communications that can operate at 28 GHz and 39 GHz 5G frequency bands. The proposed antenna is a stacked capacitive coupled patch antenna with bend parasitic elements having a dual-polarisation capability. The design principles and the antenna performance are discussed in detail. The antenna covers 25.75-30.25 GHz and 36.5-41.5 GHz and has a broad bandwidth in both the frequency bands. The proposed antenna element has a peak gain of 7.14 dBi in the lower band and 6.44 dBi in the higher band. The antenna element has a compact size of 3.8 mm × 3.8 mm × 1 mm making it suitable for implementation of antenna arrays in mobile devices.