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An Electrically Small Size Fractal Monopole Antenna

A monopole antenna, small size technology, applied in resonant antenna, antenna grounding device, antenna grounding switch structure connection and other directions, can solve the problems of reduced input resistance, reduced resonant frequency of fractal antenna, etc., to achieve high gain and efficiency , The effect of good impedance matching and clear thinking

Active Publication Date: 2017-11-03
佛山市盛夫通信设备有限公司
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  • Summary
  • 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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  • An Electrically Small Size Fractal Monopole Antenna
  • An Electrically Small Size Fractal Monopole Antenna
  • An Electrically Small Size 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 electrically small-sized fractal monopole antenna (length-0.049·λc, width-0.041·λc, height-0.068·λc; λc is the resonant frequency), which is characterized in that it includes a circular metal floor, Antenna radiator, the antenna radiator includes radiators constructed of circular-arc Gessip Peano fractal curve conductors, two inverted L-shaped conductor segments that are respectively connected to the two fractal curve radiators, and two inverted L-shaped conductor segments that are connected to the left Vertical cylindrical spiral one in the horizontal middle section of the inverted L-shaped conductor, vertical cylindrical spiral two connected to the horizontal middle section of the right inverted L-shaped conductor, and a horizontal ring connected to the bottom ends of the two vertical cylindrical spirals. The Siep Piano fractal curve radiator is directly short-circuited to the metal floor, and the other arc Gesip Piano fractal curve radiator is connected to the coaxial feeder. The invention realizes the ideal impedance matching, higher gain and good efficiency of the electrically small monopole antenna, and has the advantages of novel thinking, clear principle, universal method, easy processing 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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Patent Type & Authority Patents(China)
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