The 3-axis polarization antenna using Disk-Loaded Monopole stacked with Patch antenna in PCB

This paper presents a design method for the Disk-Loaded Monopole stacked with Patch antenna (DLMP) using the print circuit board (PCB). The DLMP has three driven ports, each of which can create independent radiation patterns with orthogonally polarized characteristics. In this antenna, a disk-loaded monopole antenna for Z axis is stacked on a patch antenna for X axis and Y axis radiation. And both antenna elements are embedded in a multilayer PCB. This structure is easy to design for any commercial terminals, but the antenna performance might be degraded by the dielectric loss of the PCB and the mutual coupling loss among each antennas. In this paper, it is shown that the DLMP using the PCB have independent radiation patterns with orthogonally polarized characteristics. And it is realizable by low loss as 1dB or less compared with the ideal antenna without dielectric. This feature can be applied to MIMO antenna solutions which need a polarization-control.