It looks similar because of the way I constructed it, but it's a loop. Ideally the loop would be a circle. I'm loosing a lot of it's performance with the top part being angular, but getting a perfect circle (or even close) is more than I've got the time or supplies for right now. Loops are substantially smaller than quads. About ⅓ of a wavelength in circumference. The theory behilnd loops, well, I haven't read up about that yet. I tried one because I've read that they get low noise recpetion at near dipole sensitivity wihout the need for a ground. What you give up is bandwidth. A loop pertty much has to have a tuner attached, or you'd be stuck with a very narrow operating range.