Multi-Feed Antennas for Wireless Communications

In this paper, two designs of multi-feed antennas are presented. These designs have each two ports, one port covering two bands, and the second port covers a third band with a good isolation above 15 dB over the bands and compact dimensions considering the integration constraints within the wireless devices. The three respective bands are those of Wi-Fi 6E technology i.e. (2.412-2.483 GHz), (5.15 -5.85 GHz), (5.9257.125 GHz) respectively. However, the same concept can be applied and extended to any wireless technology including LTE, 5G, etc. with possibility to share and split bands between technologies. The design concept and ports isolation performances are validated by experimental measurement outside and inside final host. The measurement challenges of this kind of multi-feed antennas are presented and illustrated.