E-Band Slotted Microstrip Patch Antenna for 5G Mobile Backhaul Applications

The need for high data rates, and high spectral efficiencies has grown with the tremendous advances in wireless applications, services and technologies. However, the design of miniature antennas with low cost, wider bandwidth and narrow radiation pattern is required in order to meet that increased demands as well as to support the new 5G mm-Wave spectrum. This paper proposes a single band rectangular microstrip patch antenna with square slots loaded on the radiating patch and line feeding structure. Rogers RT/Duroid 5880 substrate material with a dielectric constant of 2.2, loss tangent of 0.0009 and height of 0.55 mm is used. The proposed design operates at the mm-Wave (E-band) suitable for 5G mobile backhaul applications. The antenna operates in the band ranging from 64.20 GHz to 77.45 GHz with the center frequency at 73.7793 GHz. This operating frequency band covers the majority portion of the E-band. The impedance bandwidth of the operating band is 13.25 GHz (17.95 % from the center frequency) with a realized return loss of 39.9187 dB and a maximum gain of 6.0865 dB at the center frequency. Compared with other studies, the proposed antenna has a compact structure of $5.8 \times 7.3 \times 0.55$ mm3. An important feature of the proposed antenna is that it has a low production cost, since it is printed on a cheap Rogers RT/Duroid 5880 substrate material. Therefore, the proposed antenna has the potential to meet all the necessary requirements to be used for E-band mobile backhaul applications.