Continued from Performance of Kyocera's Antenna Does Not Lower Even on Metal Surface (3)

This time, however, Kyocera made improvements to the design of the new AMC including its shape so that it functions as an antenna element (a kind of dielectric antenna). As a result, the thickness was reduced by half from 3.8mm to 1.9mm.

The Amcenna, which was developed in this way, has properties equivalent to those of existing antennas on the surface of nonmetal. On the other hand, while the properties of existing antennas drastically lower on metal surface, those of the Amcenna hardly lower, the company said.

High-density placement realized by high selectivity for polarized waves

Two units of the Amcenna adjacent to each other (left) and two common rod antennas adjacent to each other (right) in a demonstration. The orientation of one of the two units of the Amcenna is 90° different from that of the other.

The advantage of the Amcenna is not only that it can be placed on metal surface, etc but also that,even when multiple antenna elements are placed adjacent to one another, they do not affect one another much. Therefore, when it is applied to MIMO devices, which use many antenna elements, area occupied by antennas can be reduce.

This is because the Amcenna has a high selectivity for specific linearly-polarized waves. As a result, when two units of the Amcenna are located adjacent to each other and the orientation of one of them is 90° different from that of the other, they hardly affect each other.

The antenna isolation in the same demonstration. The lower the isolation, the better.

In regard to the production cost of the Amcenna, Kyocera said, "It can be manufactured by using common substrate design technologies and processes, and, therefore, there is almost no factor that increases costs.

Original Japanese article