A Quad-Band MIMO Patch Antenna

In this work a novel quad-band MIMO microstrip patch antenna is proposed. The antenna consists of four rectangular patches operating at their dominant mode with edge-to-edge spacing of 0.0025λ
o
. The four patches operate at 750 MHz, 1.35 GHz, 1.42 GHz, and 2.07 GHz. It is shown that by appropriately positioning the patches in relation to each other, an isolation greater than 10 dB is achieved. The proposed antenna is low profile, compact, simple to design and fabricate, and it is well suited for MIMO base station applications.