CPW Fed Wideband Corner Bent Antenna for 5G Mobile Terminals

A co-planar waveguide fed slot antenna element with 34% impedance bandwidth and 2-3 dBi broadside gain is proposed. The corner bent topology of the element is investigated for reduced physical footprint and easier integration with the mobile terminals operating in the 28-GHz band. The front-to-back ratio of the corner bent antenna is 1 dB in the xy plane, which indicates a high specific absorption rate. A compact wideband reflector is proposed which has transmission of less than -25 dB and a linear phase ±90° in the 27-33-GHz bandwidth. The wideband reflector is integrated with the corner bent antenna at 0.135λ offset from the radiating aperture. The corner bent antenna integrated with the reflector operates in the 27-33-GHz band, with a front-to-back ratio of more than 14 dB across the band and a forward gain of 6-7.2 dBi. The radiation patterns are stable for 20% bandwidth. The simulated and measured results are presented.