An Ultralow Profile Magneto Electric Dipole for 5G Applications

In this paper, a Ka-band low-profile Magneto Electric (ME) dipole is presented. The proposed design exploits a balanced microstrip line feed to excite a rectangular slot in the aim of flattering the gain frequency response. Simulated results show that the proposed ME dipole achieves an impedance bandwidth of 24% (S11 ≤ -10dB) from 25.7 to 32.6 GHz. Unlike other ME dipole geometries, this design is obtained using an ultrathin dielectric multi-layer structure as the overall antenna thickness is equal to 0.086 λ0 (λ0 is the free-space wavelength at 29GHz). Bandwidth is improved by adding capacitive loads between the arms of the electric dipole. Radiation patterns with low back-radiation levels and low cross-polarization and a stable antenna gain higher than 8 dBi are reached across the entire operating bandwidth. The radiator shows good performances and it is well suited for 5G mobile telecommunication systems.