Patent ID: 9209517
Filing Date: 2015-12-08
Classification: H01Q

Abstract:
1. A MIMO (Multi-Input Multi-Output)/diversity antenna for improving isolation of a specific frequency band, comprising: a ground surface formed on a printed circuit board (PCB); a plurality of planar inverted-F antennas disposed on portions of the PCB where the ground surface is not formed, with the ground surface being interposed therebetween, and configured to have antenna patterns each including a radiation portion, a feeding portion, and a ground portion; a plurality of feeding pads and ground pads formed on portions of the PCB where the ground surface is not formed, so as to correspond to the feeding and ground portions of the antenna patterns provided in the plurality of planar inverted-F antennas; and a plurality of connection patterns configured to connect the ground surface with the ground pads in order to electrically connect the ground surface to the ground portions provided in the antenna patterns of the plurality of planar inverted-F antennas; wherein at least one of the plurality of connection patterns is formed of a meander line-shaped stripline, thereby minimizing distribution of current components shared on the ground surface by the plurality of planar inverted-F antennas, and also preventing electromagnetic interference attributable to electromagnetic waves radiated from the plurality of planar inverted-F antennas.