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Low-profile multi-frequency omnidirectional vertically polarized antenna

A vertically polarized antenna and low-profile technology, applied in the field of antennas, can solve the problem of inability to realize vertically polarized low-frequency antennas, and achieve the effect of good omnidirectional radiation performance and convenient connection and use.

Active Publication Date: 2021-11-09
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above scheme cannot realize vertically polarized, omnidirectional and low-profile low-frequency antennas

Method used

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  • Low-profile multi-frequency omnidirectional vertically polarized antenna
  • Low-profile multi-frequency omnidirectional vertically polarized antenna
  • Low-profile multi-frequency omnidirectional vertically polarized antenna

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Embodiment Construction

[0047] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0048] Such as figure 1 As described in Fig. 6, a low-profile multi-frequency omnidirectional vertically polarized antenna provided according to the present invention includes: a radiation structure, a radio frequency excitation switching connection T-shaped structure; the radiation structure includes a high-frequency radiation structure and a medium-low frequency Radiation structure, the high-frequency radiation structure is located on the top of the low-frequency radiation structure; the radiation str...

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Abstract

The invention provides a low-profile multi-frequency omnidirectional vertically polarized antenna, comprising: a radiation structure, a radio frequency excitation switching connection T-shaped structure; the radiation structure is divided into a high-frequency radiation structure and a medium-low frequency radiation structure, and The structure is located on the top of the middle and low frequency radiating structure; the two radiating structures have the same structure, including: circular metal patch, conical truncated cone, short-circuit column, central feeding cylinder and impedance matching structure; RF excitation conversion interface connected to the T-shaped structure RF excitation can be done with SMA connector feeder. The invention has good omnidirectionality, the profile height is 0.0185 times of the maximum wavelength, has certain working bandwidth in three working frequency bands, and the in-band gain is greater than -0.856dBi, up to 4.671dBi.

Description

technical field [0001] The invention relates to an antenna, in particular to a low profile multi-frequency omnidirectional vertically polarized antenna. Background technique [0002] The continuous progress of science and technology and the increasing demands of all aspects of society have promoted the rapid development of wireless communication technology. Antennas, as an important part of wireless communication systems, have gradually received more attention. On various carriers such as satellites, automobiles, and ships, communication equipment is also indispensable, and the requirements for antennas are becoming more and more stringent. On the basis of ensuring the performance of the antenna, the miniaturization and low profile of the antenna is an inevitable trend of development. [0003] The profile height of existing common vertically polarized omnidirectional antennas is generally 1 / 4 of the operating frequency wavelength, and the size is larger at low frequencies. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50H01Q5/28H01Q9/04H01Q15/24
CPCH01Q1/36H01Q1/38H01Q1/50H01Q9/0407H01Q15/24H01Q5/28
Inventor 耿军平韩家伟金荣洪梁仙灵任超凡王堃
Owner SHANGHAI JIAO TONG UNIV
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