Beam-width Agile antenna for 5G MMW Applications

In this communication, a beam width reconfigurable antenna with the parasitic elements is presented for 5G applications. The proposed antenna consists of an inset fed circular patch (driven element). To enhance the impedance matching a -35° rotated slot is inserted in the circular patch. Four parasitic arcs are placed in the close proximity of the driven element. In first case three pin-diodes are loaded among the arcs to tune the mutual coupling between arcs and driven element. In the second case pin-diodes are replaced with GeTe material based strips for reconfiguration purposes. This design can operate between 27.2-32 GHz with a peak realized gain of 9.1 dBi. In the first case, beamwidth can be enlarged from 58° to 121.3o. In the second case, beamwidth can be vary from 75° to 128.7°. In both cases beam is also steered.

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