Artificially soft surfaces for broadband antennas decoupling

As a rule, an electronic system, comprising both receiver and transmitter, operates properly only when the signal arriving at the receiver´s input is appreciably suppressed, or the required level of receiver-to-transmit antenna isolation is assured. The authors find that a trapezoid groove corrugated structure widens the bandwidth substantially and acts as an artificially soft surface that can be used for increase of antenna isolation.