Compact antenna for multiple input multiple output communications including isolated antenna elements

摘要

An antenna for MIMO communications includes a ground plane having a planar surface, a first feeding patch spaced apart from and parallel to the ground plane, and a first parasitic patch spaced apart from and parallel to the first feeding patch. The antenna further includes a second feeding patch spaced apart from and parallel to the ground plane and disposed adjacent the first feeding patch, and a second parasitic patch spaced apart from and parallel to the second feeding patch. The first parasitic patch may be capacitively coupled to the first feeding patch, and the second parasitic patch may be capacitively coupled to the second feeding patch. The ground plane may include an isolation notch therein arranged between the first and second feeding patches.

主权项

1. An antenna, comprising:
a ground plane; a first feeding patch spaced apart from the ground plane; a first parasitic patch spaced apart from and adjacent to the first feeding patch and capacitively coupled to the first feeding patch, wherein the first feeding patch is between the ground plane and the first parasitic patch, and wherein the first parasitic patch is coupled to the ground plane by a first ground pin; a second feeding patch spaced apart from the ground plane and disposed adjacent the first feeding patch; and a second parasitic patch spaced apart from and parallel to the second feeding patch and capacitively coupled to the second feeding patch, wherein the second feeding patch is between the ground plane and the second parasitic patch, and wherein the second parasitic patch is coupled to the ground plane by a second ground pin; wherein the ground plane comprises a notch therein arranged between the first and second feeding patches and configured to increase electrical isolation between patch antennas formed by the first and second feeding patches; and wherein the notch has an H-shape including a center portion that extends in a longitudinal direction between the first and second feeding patches and respective first and second transverse end portions at respective ends of the center portion and that are perpendicular to the center portion, wherein the center portion is longer than lengths of the first and second feeding patches along which the center portion extends, wherein the first transverse end portion is shorter than the second transverse end portion, and wherein the first and second feeding patches are offset in the longitudinal direction towards the first transverse end portion.