PHASED ARRAY ANTENNA WITH ACTIVE EDGE ELEMENT

PROBLEM TO BE SOLVED: To provide a phased array antenna equipped with an active or a beam forming array and an active edge element which is capable of transmitting and/or receiving radio signals. SOLUTION: A phased array antenna includes an active or a beam forming array and an active edge element capable of transmitting and/or receiving radio wave signals. The edge element has two functions; one is to serve as an active element used for transmitting and/or receiving radio wave signal, and the other is to offer uniform impedance to an edge element of the antenna array. The active edge element is capable of transmitting and/or receiving radio waves, operating at the same frequencies with the array antenna or the frequencies different from those of the array antenna. The active edge element can be set different in polarity from the array element.