MIMO/DIVERSITY ANTENNA FOR IMPROVING THE ISOLATION OF A SPECIFIC FREQUENCY BAND

摘要

A MIMO/diversity antenna for improving the isolation of a specific frequency band according to the present invention includes: a ground surface formed on a printed circuit board; a plurality of planar inverted F antennas having the ground surface therebetween and disposed on the printed circuit board having no ground surface formed, each F antenna having an antenna pattern that includes a radiation unit, a power supply unit, and a ground unit; a plurality of power supply pads and ground pads formed on the printed circuit board having no ground surface formed corresponding to the power supply unit and the ground unit of the antenna pattern in the plurality of planar inverted F antennas; and a plurality of connection patterns connecting the ground surface with each ground pad in order to electrically connect the ground surface to each ground unit of the antenna pattern in the plurality of planar inverted F antennas. At least one of the plurality of connection patterns is formed with a strip line of a meandering shape, in order to minimize the mutually shared distribution of current components on the ground surface and prevent electromagnetic interference due to electromagnetic waves emitted from the plurality of planar inverted F antennas. Accordingly, the present invention relates to a MIMO/diversity antenna having improved isolation and antenna property to improve the isolation of a specific frequency band.