Please, anyone, have papers or papers titles about the spiral antenna array design with the feed network (spiral antenna array, I mean the elements arranged on the spiral path a not spiral element)?
Dear Dr. Falih thanks for your answer, but this is not the answer that I want. The design in the mentioned paper (your paper), is about spiral elements used as an element in a 2x2 antenna array. I need a paper about the antenna array that arranged its elements along spiral paths. The element that is used in this array can be any element shape like circular, rectangular, or any shape.