PRINTED RADIATING ELEMENT WITH 2 HIGHLY DECOUPLED INPUT PORTS

The Letter presents a very efficient technique based on the symmetry o f the feeds to strongly reduce the port-to-port-coupling of dual-polar isation printed antennas. This technique was applied to a slot-coupled microstrip stacked structure fed by stripline, a breadboard was made, and a decoupling of-35dB or better was achieved over a large bandwidt h.