Circular polarization antenna structure with a dual-layer ceramic and method for manufacturing the same

A method for manufacturing a circular polarization antenna structure with a dual-layer ceramic, comprising:

• respectively forming a first metal layer and a grounding layer on a top surface and a bottom surface of a first hard dielectric body;
• calculating an installed position for an antenna feed pin by a simulation software in order to obtain a highest zenith gain;
• forming a through hole passing through the first hard dielectric body according to the installed position, wherein the antenna feed pin passes through the through hole of the first hard dielectric body, and the antenna feed pin has a top side fixed above the first hard dielectric body and a bottom side extended outwards from the bottom surface of the first hard dielectric body;
• providing a second hard dielectric body and forming a second metal layer on a top surface of the second hard dielectric body, wherein the second hard dielectric body is disposed above the first hard dielectric body;
• adhering the first hard dielectric body and the second hard dielectric body to each other by an adhesive element that is disposed between the first metal layer and the second hard dielectric body;
• and
• adjusting the bandwidth of the circular polarization antenna structure according to different usage requirements.