Enabling smaller antenna designs

Murata’s new parasitic element coupling device is designed to improve antenna efficiency by magnetically coupling the parasitic element with the antenna. It is claimed to be the world’s first solution designed for Wi-Fi 6E and Wi-Fi 7 products. For designers of smartphones, tablets, network routers, game consoles and other compact electronics, it lets them build more efficient antennas required for modern space-constrained devices.

The device connects the feeding antenna to its parasitic elements more effectively than through free space. It acts as a tiny coupling device whose compact size enables strong coupling performance without magnetic materials, which would be inappropriate
at the targeted operating frequencies.

One side of the coupling device is connected, at very low insertion loss, between a device’s RF circuitry and its main antenna. The other side is connected between the ground and parasitic element. The resultant, more direct coupling enables resonance characteristics of the parasitic element to be added to those of the feeding antenna.