Ultra wide band antenna based on fractal and fractal method thereof

An ultra-wideband antenna and fractal technology, applied to the antenna grounding device, the structural form of the radiation element, etc., can solve the problems that have not been reported publicly, and achieve the effects of good repeatability, good impedance matching, and light weight

Active Publication Date: 2013-10-23
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention relates to a fractal-based ultra-wideband antenna and its fractal method. After literature search, there is no public report identical to the present invention

Method used

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  • Ultra wide band antenna based on fractal and fractal method thereof
  • Ultra wide band antenna based on fractal and fractal method thereof
  • Ultra wide band antenna based on fractal and fractal method thereof

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Embodiment Construction

[0021] The specific embodiments of the present invention will be further described below in conjunction with the drawings.

[0022] A fractal-based ultra-wideband antenna of the present invention is composed of a dielectric plate 3, a radiating unit 2 and a feeding unit 4 printed on one side of the dielectric plate and directly connected, and a ground unit 6 printed on the other side of the dielectric plate ,among them:

[0023] a. The radiating unit 2 is a metal patch formed by three iterations of fractal and is a connected body, on which the gap 1 is etched;

[0024] b. The grounding unit 6 is a rectangular metal patch with a rectangular groove 5 etched thereon;

[0025] The fractal method of radiating element 2 in the said fractal-based ultra-wideband antenna is:

[0026] a. Cut the square radiator 2 into four isosceles right triangles, and the side length of the right side of the triangle is one-third of the square radiator 2, thus completing the first iteration of fractal;

[...

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Abstract

The invention discloses an ultra wide band antenna based on fractal and a fractal method thereof and belongs to the technical field of wireless communication. The antenna comprises a dielectric-slab (3), as well as radiating elements (2) and a feed unit (4) which are directly connected with each other, and an earthing unit (6) in which an open slot (5) is formed. The fractal method of the radiating elements (2) comprises the steps that a, four isosceles right triangles are cut off from a square radiating sheet 2, and the side length of the right-angle side of each triangle is one third that of the square radiating sheet 2; b, 5 squares are marked off in the middle of the surplus structure after first fractal, the area of each square is one ninth that of the whole square radiating sheet (2) before fractal, an isosceles triangle is cut off from each corner of each square, and the right-angle side of each triangle is one third the side length of the square; and c, third iteration is continuously carried out on the surplus structure after secondary fractal according to the operation in the b step. The ultra wide band antenna based on fractal and the fractal method thereof have the advantages that an ultra wide band is formed, multifrequency work is realized, the directivity is good, the standing-wave ratio is small, and excellent impedance matching can be realized.

Description

Technical field: [0001] The invention relates to a fractal-based ultra-wideband antenna and a fractal method thereof, and belongs to the technical field of wireless communication. Background technique: [0002] Since the US Federal Communications Commission divided the 3.1GHz-10.6 GHz frequency band into the UWB system frequency band, industry and academia have invested a lot of research and efforts in the field of UWB radio technology. As an important part of the UWB system, UWB antennas have attracted extensive research in broadband impedance matching, stable radiation pattern, miniaturization and low cost. [0003] Fractal is not only a wideband method, but also a miniaturization method. This concept is derived from the fractal pattern in geometry. When applied to an antenna, the fractal pattern is applied to the antenna's radiating sheet or ground plane. Fractal structure has two characteristics, one is space filling, the other is self-similarity. In the process of realizing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48
Inventor 申东娅王光韬朱纪超张秀普帅新芳
Owner YUNNAN UNIV
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