Multi-frequency band novel Koch fractal antenna for mobile terminal

A mobile terminal, fractal antenna technology, applied to antennas, antenna grounding devices, devices that make antennas work in different bands at the same time, etc. The effect of good isolation and good bandwidth characteristics

Inactive Publication Date: 2016-10-26
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although, with the continuous development of antenna technology, microstrip antennas have appeared, which have low profile, light weight, low cost, can conform to various carriers, are suitable for mass production of printed circuit board technology, and are easy to achieve circular polarization and dual polarization. , dual-band work and other advantages, but its fatal shortcoming is narrow-band, which limits its wide application

Method used

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  • Multi-frequency band novel Koch fractal antenna for mobile terminal
  • Multi-frequency band novel Koch fractal antenna for mobile terminal
  • Multi-frequency band novel Koch fractal antenna for mobile terminal

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] The fractal antenna of the present invention, according to the Cauchy (Koch) fractal structure, carries out the internal hollowing out and the induction ring structure on the back of the medium layer, through the optimized control of the hollowing out shape of the antenna radiation body and the ringing mechanism, to change the current flow direction of the metal surface of the antenna , so as to realize the radiation of various wireless frequency band modes.

[0028] The fractal antenna of the present invention includes a radiator 1, a ground plate 2, a dielectric substrate 3, a feeder 4 and an induction loop 5, such as figure 1 , figure 2 As shown: the radiator 1, the ground plate 2, and the feeder 4 are all covered on the front of the dielectric substrate 3, the feeder 4 is connected to the radiator 1, and the ground plate 2 adopts a copper ground ...

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Abstract

The invention discloses a multi-frequency band novel Koch fractal antenna for a mobile terminal. The fractal antenna includes a radiator, a ground plate, a medium substrate, and a feed line. The radiator, the feed line, and the ground plate cover the right side of the medium substrate. The back side of the medium substrate is also designed with an inductance loop. The radiator adopts a Koch fractal structure with a central position hollowed, and the hollowed structure is of a Koch fractal structure which is arranged in the same orientation as the radiator. According to the invention, the fractal antenna conducts optimal control on the hollowed structure of the radiator main body of the antenna and an added loop mechanism to change the direction of the current on a metal surface of the antenna, so that the radiation of multi-frequency band mode is achieved.

Description

technical field [0001] The invention relates to a fractal antenna, in particular to a novel multi-band Koch fractal antenna for mobile terminals. Background technique [0002] Fractal antenna is an antenna with fractal characteristics in geometric properties, and it is one of many applications of fractal electrodynamics. Substantial progress has been made in the research of fractal antenna units and fractal antenna arrays abroad, but domestic research in this area is still very little. Fractal antennas are the fusion of fractal theory and antenna technology, showing many advantages compared with traditional antennas. It is a research hotspot in the field of antennas in recent years. The research and application of fractal antennas have great potential in both military and civilian applications, especially in wireless, satellite and mobile communication systems, and have a very broad market prospect. [0003] Traditional microstrip antennas usually need to use multiple radi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q5/10H01Q5/28
CPCH01Q1/38H01Q1/48H01Q5/10H01Q5/28
Inventor 余建国于臻汪钬柱王鹏培赵伦陈雷
Owner BEIJING UNIV OF POSTS & TELECOMM
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