A multiband hook shaped flexible microstrip array antenna with DGS for 5G communication applications

In the present emerging trends of 5G communication, long-distance communication cannot be accomplished with a single antenna. To enhance the gain and efficiency, a multi-band double hook shaped micro strip array antenna with defected ground structure has been designed and analyzed in this work for 5G communication applications. A quarter-wave transformer with a good impedance matching network is employed to provide the antenna's radiating components, and the designed antenna is prototyped on a 0.2 mm thick polyimide substrate with a dielectric constant of 2.9. Antenna resonating in the quad band with 10 GHz bandwidth at first resonant band and 1 GHz bandwidth at other three resonant bands. Gain of 8.8 dB at 22 GHz, 11 dB at 28 GHz, 13 dB at 32 GHz and 14.2 dB at 38 GHz is attained from radiation characteristics. The antenna is flexible and conformal with respect to the host surface, providing excellent correlation in simulation and protype real time measurement.