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Electric small-sized fractal monopole antenna

A technology of monopole antenna and electrically small size, which is applied in the direction of resonant antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of fractal antenna resonant frequency reduction, input resistance reduction, etc., and achieve high gain and efficiency , convenient processing, and the effect of expanding the application field

Active Publication Date: 2015-06-10
佛山市盛夫通信设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like conventional geometric bends, the input resistance of the fractal antenna will be greatly reduced while achieving a significant reduction in the resonant frequency

Method used

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  • Electric small-sized fractal monopole antenna
  • Electric small-sized fractal monopole antenna
  • Electric small-sized fractal monopole antenna

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Embodiment Construction

[0046] The invention is an electrically small-sized fractal monopole antenna (length -0.049·λ) working in the UHF frequency band c , width -0.041·λ c , high -0.068·λ c ; lambda c is the resonant frequency), it includes a circular metal floor 3 provided with a coaxial feed hole 1 and a coaxial cable 2, and an antenna body 4 standing upright on the metal floor 3. The antenna body 4 includes two The radiator 4-1 of the periodic arc Gesip Peano fractal curve conductor structure, the two inverted L-shaped conductor segments 4-2, 4-3, The vertical cylinder spiral one 4-4 that is connected to the horizontal midsection of the inverted L-shaped conductor on the left side, the vertical cylinder spiral two 4-5 that is connected to the horizontal midsection of the right inverted L-shaped conductor, and the bottom end that is connected to the two vertical cylinder spirals Horizontal rings 4-6, one of the Gesip Piano fractal curve radiators is short-circuited to the metal floor 3, and th...

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Abstract

The invention discloses an electric small-sized fractal monopole antenna (length-0.049. lamda c, width-0.041.lamda c, height-0.068.lamda c, and lamda c represents resonant frequency). The electric small-sized fractal monopole antenna is characterized by comprising a round metal floor and an aerial radiation body, wherein the aerial radiation body comprises radiation bodies respectively composed of circular-arc Gussie.Piano fractal curve conductors, a left inverted-L-shaped conductor section, a right inverted-L-shaped conductor section, a vertical cylindrical helix I connected to the horizontal middle section of the left inverted-L-shaped conductor section, a vertical cylindrical helix I connected to the horizontal middle section of the right inverted-L-shaped conductor section and horizontal circular rings connected to the two vertical cylindrical helixes. The left inverted-L-shaped conductor section and the right inverted-L-shaped conductor section are respectively connected with two fractal curve radiation bodies and are mutually symmetric, one circular-arc Gussie.Piano fractal curve radiation body is directly short-circuited to the metal floor, and the other circular-arc Gussie.Piano fractal curve radiation body is connected with a coaxial feeder. Ideal impedance matching, higher gain and good efficiency of the electric small-sized fractal monopole antenna are achieved, and the electric small-sized fractal monopole antenna has the advantages of being novel in concept, clear in principle, pervasive in method, easy to process and the like.

Description

technical field [0001] The invention relates to the technical field of communication antenna equipment, in particular to an electrically small-sized fractal monopole antenna. Background technique [0002] Antennas are one of the most important components in a wireless communication system. Since the antenna has a size comparable to the working wavelength, its size is often large when the frequency is very low, such as shore submarine very low frequency (VLF) communication antenna, tank ultra high frequency (UHF) communication single whip antenna, etc. Miniaturization and light weight are the goals that modern wireless communication devices are always pursuing, and antennas have become one of the keys and bottlenecks to achieve this goal. When the antenna size is designed to be much smaller than the working wavelength, such as less than 0.1·λ or even smaller (electrically small antenna) in order to adapt to the installation space, such as the built-in electric small loop ant...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/48H01Q1/50H01Q9/42
Inventor 李道铁
Owner 佛山市盛夫通信设备有限公司
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