Patent
Fractal antenna ground counterpoise, ground planes, and loading elements and microstrip patch antennas with fractal structure
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TLDR
Fractalized ground counterpoise elements and/or microstrip patch antenna systems may be fabricated on a flexible printed circuit substrate, and placed within the support mount of a cellular telephone car antenna as mentioned in this paper.Abstract:
An antenna system includes a fractalized element that may be a ground counterpoise, a top-hat located load assembly, or a microstrip patch antenna having at least one element whose physical shape is at least partially defined as a first or higher iteration deterministic fractal. The resultant fractal element may rely upon an opening angle for performance, and is more compact than non-Euclidean ground counterpoise elements or the like. A vertical antenna system includes a vertical element that may also be a fractal, and a vertical antenna can include vertically spaced-apart fractal conductive and passive elements, and at least one fractal ground element. Various antenna configurations may be fabricated on opposite surfaces of a substrate, including a flexible substrate, and may be tuned by rotating elements relative to each other, and/or by varying the spaced-apart distance therebetween. Fractalized ground counterpoise elements and/or microstrip patch antenna systems may be fabricated on a flexible printed circuit substrate, and/or placed within the support mount of a cellular telephone car antenna.read more
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References
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Journal ArticleDOI
The fractal random array
Y. Kim,Dwight L. Jaggard +1 more
TL;DR: A novel method of random array synthesis that relies on the application of the underlying self-similarity inherent in random fractals to the problem of antenna array theory to produce robust, low sidelobe arrays is presented.
Patent
Microstrip patch antenna with fractal structure
TL;DR: In this paper, a microstrip patch antenna having reduced size is implemented by providing a substrate having on one surface a conductive fractal pattern, and having on the other surface another conductive pattern that may (but need not) also be a fractal patterns.
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Multioctave microstrip antenna
TL;DR: In this paper, a multioctave microstrip antenna for mounting to one side of a ground plane and including a metal foil spiral-mode antenna element and a dielectric substrate was proposed.
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Tuning fractal antennas and fractal resonators
TL;DR: In this paper, the first fractal antenna of iteration N≧2 in free space exhibits characteristics including at least one resonant frequency and bandwidth, and a region of ground plane may be formed adjacent the antenna system, to form a sandwich-like system that is readily tuned.
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Planar serpentine antennas
TL;DR: In this paper, the authors describe a series of change of direction points characterized by a succession of right angle turns and back folds to obtain substantially the greatest length in the smallest surface area.