A Wideband Rectangular Microstrip Patch Antenna with Partial Ground Plane for 5G Applications

A directional wideband microstrip line fed rectangular patch antenna has been proposed for the 28 GHz 5G applications. Initially, a conventional rectangular microstrip patch antenna has been designed thereafter to enhance the performances as well as to tune in the desired operating frequency range (24 GHz-30 GHz) a cutting edge with partial ground plane technique is used. At the intermediate stage, a star-shaped parasitic element has been used for the gain enhancement of the antenna. However, the high gain of the antenna is retained by optimizing the dimensions and position of the cutting edge as well as the ground plane without introducing any parasitic element on the patch which is the simplicity of the proposed antenna. The proposed antenna operates at the 28.201 GHz band ranging from 26.984 GHz to 29.551 GHz. It has an average radiation efficiency of 84.5%. As the proposed antenna possesses a smaller size (
$\mathbf{20}\times \mathbf{17}\times \mathbf{1.575}\ \mathbf{mm}^{\mathbf{3}}$
) and wide bandwidth of 2.567 GHz with a high gain and directivity over the entire operating band, it can be considered as a potential candidate for the 28 GHz millimetre wave (mm-wave) applications.