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A fractal antenna is an antenna that uses a fractal, self-similar design to maximize the effective length, or increase the perimeter (on inside sections or the outer structure), of material that can receive or transmit electromagnetic radiation within a given total surface area or volume.
Who invented fractal antennas?
The Invention of Fractal Antennas Dr. Cohen built the first bona fide fractal element antenna in 1988. He is now one of the world’s most innovative antenna designers, now with 26 years of professional experience, and 53 years of practical experience, stemming from his ‘ham’ antenna work over many years.
How are fractals being used in cell phones?
Fractal antennas allow phones to process the transmission of a wider range of electromagnetic frequencies and reduce the total number of antennas required. The fractal used in cell phones today is called the sierpinski carpet, which is a plane fractal first described by Wacław Sierpiński in 1916.
What kind of fractal has been effectively used in telecommunication devices?
What kind of fractal has been effectively used in telecommunications devices? Telecommunications rely on the physical properties of radio waves, which like their name suggests travels in a wave-like way (think of a sine curve).
Why do we need fractal antenna?
Fractals have been used in antennas since 1988 and their advantages are good multiband performance, wide bandwidth, and small area and that reference showed that the gain with small size results from constructive interference with multiple current maxima, afforded by the electrically long structure in a small area.
What’s the highest dimension a fractal can have?
The pattern illustrates self similarity. The theoretical fractal dimension for this fractal is 5/3 ≈ 1.67; its empirical fractal dimension from box counting analysis is ±1% using fractal analysis software.
How does a helical antenna work?
Helical antenna or helix antenna is the antenna in which the conducting wire is wound in helical shape and connected to the ground plate with a feeder line. The radiation of helical antenna depends on the diameter of helix, the turn spacing and the pitch angle.
How do we use fractals in everyday life?
Fractal mathematics has many practical uses, too – for example, in producing stunning and realistic computer graphics, in computer file compression systems, in the architecture of the networks that make up the internet and even in diagnosing some diseases.
Who is the engineer who found out that antennas can be designed efficiently by using fractals?
Ever since the mathematician Benoit Mendelbrot discovered the unusual world of fractals many real world applications have been developed.
How are fractals used in technology?
Utilized in shows such as Star Trek and Star Wars, fractals are used to create landscapes that are otherwise impossible with conventional technology. On a related note, fractals are also used in creating some computer graphics. As such, fractals can be used to capture images of these complex structures.
What does it demonstrate when a fractal produces the same shape at smaller and smaller?
When a fractal produces the same shape at smaller and smaller scales, it demonstrates self similarity. The whole object has the same shape as one or more of the parts of itself is the self similarity.
What is fractal object?
Simply put, a fractal is a geometric object that is similar to itself on all scales. If you zoom in on a fractal object it will look similar or exactly like the original shape. This property is called self-similarity. The property of self-similarity or scaling is closely related to the notion of dimension.
Are fractals infinite?
A fractal is a never-ending pattern. Fractals are infinitely complex patterns that are self-similar across different scales. They are created by repeating a simple process over and over in an ongoing feedback loop. Driven by recursion, fractals are images of dynamic systems – the pictures of Chaos.
Can you make a homemade TV antenna?
A TV antenna is a great way to get a multitude of HD channels including, in many areas, ABC, CBS, FOX and NBC for free. While you can buy an antenna for under $50 at stores such as Walmart or Target, you can also build your own antenna with items you likely already have in your house.
What is the best material for antenna?
Copper is a best suited material for base antennas. The metal, while soft and malleable, is quite rigid. Stainless steel has a higher tensile strength, so thinner wire can be used.
What is wavelength in antenna?
A term related to frequency is wavelength. Radio waves travel at the speed of light. The term wavelength refers to how far the radio signal travels with each cycle. For example, because the speed of light is roughly 300,000,000 meters per second, the wavelength of a 1-Hz radio wave is about 300,000,000 meters.
How does a TV antenna work?
To simplify it, a TV antenna is a collection of specially arranged wires or metal elements designed to pick up broadcast signals from TV networks. HDTV antennas receive television broadcasts via electromagnetic signals and translate them into video and audio to display whatever programming you want to watch.
Where are patch antennas used?
The patch antenna is mainly practical at microwave frequencies, at which wavelengths are short enough that the patches are conveniently small. It is widely used in portable wireless devices because of the ease of fabricating it on printed circuit boards.
What is fractals in image processing?
Fractal compression is a lossy compression method for digital images, based on fractals. The method is best suited for textures and natural images, relying on the fact that parts of an image often resemble other parts of the same image.
What is the emblem of fractal geometry?
When Mandelbrot iterated his equation he got his own set of numbers. Graphed on a computer, it was a kind of roadmap of all the Julia sets and quickly became famous as the emblem of fractal geometry: the Mandelbrot set.
What is the hausdorff method?
The Hausdorff dimension measures the local size of a space taking into account the distance between points, the metric. Consider the number N(r) of balls of radius at most r required to cover X completely. When r is very small, N(r) grows polynomially with 1/r.
What fractal dimension tells us?
Fractal dimension is a measure of how “complicated” a self-similar figure is. In a rough sense, it measures “how many points” lie in a given set. A plane is “larger” than a line, while S sits somewhere in between these two sets.
Is a line a fractal?
A straight line, for instance, is self-similar but not fractal because it lacks detail, is easily described in Euclidean language, has the same Hausdorff dimension as topological dimension, and is fully defined without a need for recursion.
