Subminiature ultra-wide-band helical antenna

A helical antenna and ultra-wideband technology, which is applied in the field of communication, can solve the problems that the size and performance of the antenna cannot be balanced, and achieve the effects of improving low-frequency standing waves and pattern, reducing volume, and improving the effect of standing waves

Inactive Publication Date: 2014-01-01
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem that the antenna size and performance cannot be balanced in the existing non-frequency-variable ant

Method used

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  • Subminiature ultra-wide-band helical antenna
  • Subminiature ultra-wide-band helical antenna
  • Subminiature ultra-wide-band helical antenna

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] figure 1 Shown is a three-dimensional structural schematic diagram of the ultra-small ultra-wideband helical antenna in this embodiment, figure 2 for with figure 1 Corresponding front sectional view, it can be seen from the figure that the ultra-small ultra-wideband helical antenna in this embodiment includes a radiator 1, a metal cavity 2, a feeding balun 3, a feeding connector 4 and a wave-absorbing material 5, wherein the radiator 1 includes a plane helix 11, a longitudinal helix 12 and a medium support 13, the medium support 13 is a hollow cylinder with one end closed, the plane helix...

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Abstract

The invention discloses a subminiature ultra-wide-band helical antenna which is applied to the technical field of communication. The subminiature ultra-wide-band helical antenna mainly comprises a radiator, a metal cavity, a feed Balun, a feed connector and wave absorbing materials. The radiator comprises plane helical lines, longitudinal helical lines and a medium support. The subminiature ultra-wide-band helical antenna enables the plane helical lines and the longitudinal helical lines to be combined together through the medium support which is sealed at one end and is the shape of a hollow cylinder, so that the band width of the antenna is increased, and meanwhile miniaturization of the antenna is realized. The longitudinal helical lines are connected with the antenna metal cavity through a resistor at the head ends of the longitudinal helical lines and a resistor at the tail ends of the longitudinal helical lines, so that low-frequency standing waves of the antenna and a directional diagram of the antenna are improved; the wave absorbing materials are arranged inside the metal cavity in a filling mode, so that the directional diagram, within the frequency band of the antenna and the circular polarization performance, within the frequency band, of the antenna are improved; due to the fact that an antenna cover is added, the use stability of the antenna is improved, and the service life of the antenna is prolonged. The subminiature ultra-wide-band helical antenna has the advantages of being ultra-wide in band, circularly polarized, wide in lobe, miniaturized and the like, and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a novel ultra-small ultra-wideband helical antenna. Background technique [0002] With the development of communication technology, various electronic devices have used most of the frequency band of the electromagnetic field; with the emergence of broadband systems, antennas are required to have broadband or even ultra-wideband characteristics. At the same time, with ultra-wideband communications, radar , imaging and other fields, it is necessary to design a new type of miniaturized or even ultra-miniature ultra-wideband antenna. [0003] At present, the types of antennas with ultra-wideband performance mainly include horn antennas, parabolic antennas, Vivaldi antennas, logarithmic periodic antennas, and fractal antennas. Compared with these UWB antennas, non-frequency-variable antennas exhibit their own unique properties, such as stable input impedance, miniat...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q17/00
Inventor 杨仕文顾爱军何小峰苟俨山李潇刘传石星宇
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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