Effect of the Size and Shape of the Ground Plane in Small Antennas Efficiency

An analysis of the radiation efficiency depending on the position of a small antenna and the size and shape of the ground plane is presented. For the analysis a LTCC based chip antenna has been used placing it on FR4 square, circular and triangular PCBs. The study is an insight of the key points for obtaining proper radiation efficiency in designs for the new licensed 5G IoT bands (600 MHz-USA, 700 MHz-Europe) and the ISM bands (868 MHz-Europe, 915 MHz-USA).