Editing Fractal antenna (section)

==Log-periodic antennas==
[[Log-periodic antenna]]s are arrays invented in 1952 and commonly seen as TV antennas. This was long before [[Benoit Mandelbrot|Mandelbrot]] coined the word ''fractal'' in 1975.<ref>{{cite book |title=Mathematical people: profiles and interviews |last1=Albers |first1=Donald J. |last2=Alexanderson |first2=Gerald L. |publisher=AK Peters |year=2008 |isbn=978-1-56881-340-0 |location=Wellesley, MA |page=214 |chapter=Benoît Mandelbrot: In his own words |author2-link=Gerald L. Alexanderson}}</ref>  Some authors (for instance Cohen)<ref>Nathan Cohen, "Fractal antenna and fractal resonator primer", p. 218, ch.8 in, Michael Frame, Nathan Cohen (eds), ''Benoit Mandelbrot: A Life In Many Dimensions'', World Scientific, 2015 {{ISBN|9814635537}}.</ref> consider log-periodic antennas to be an early form of fractal antenna due to their infinite self similarity at all scales. However, they have a finite length even in the theoretical limit with an infinite number of elements and therefore do not have a [[fractal dimension]] that exceeds their [[topological dimension]] – which is one way of defining fractals. More typically, (for instance Pandey)<ref>Anil Pandey, ''Practical Microstrip and Printed Antenna Design'', p. 5, Artech House, 2019 {{ISBN|1630816701}}.</ref> authors treat them as a separate but related class of antenna.