An Antenna Array for Improving Cross-polarization Discrimination of Tripole Antennas

A technology of pole antennas and antenna arrays, which is applied in the directions of antenna arrays, antenna arrays, antennas, etc. that are energized separately, can solve the problem of high cross polarization, achieve no waste of space, overcome low cross polarization discrimination, and cross polarization The effect of improved discrimination

Active Publication Date: 2019-08-30
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to achieve the above object, the present invention provides an antenna array that improves the cross-polarization discrimination of tripole antennas, which solves the problem of relatively high cross-polarization in the prior art when tripole antenna units are arrayed

Method used

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  • An Antenna Array for Improving Cross-polarization Discrimination of Tripole Antennas
  • An Antenna Array for Improving Cross-polarization Discrimination of Tripole Antennas
  • An Antenna Array for Improving Cross-polarization Discrimination of Tripole Antennas

Examples

Experimental program
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Embodiment 1

[0053] Figure 8 It is the H-plane pattern at 3.3, 3.45 and 3.6GHz of the sub-array placed in rotation and given the appropriate phase to the port. The pattern contains the main polarization and cross polarization ratio curves.

[0054] Such as Figure 10 As shown, the vector current distribution diagrams when the connection points 1a, 1b, 1c, and 1d are excited with the same amplitude, and the feed phases are 180°, 0°, 0°, and 180° respectively. Figure 10 The scale on the left represents the current density distribution, the lighter the color, the larger the current amplitude, on the contrary, the darker the color, the smaller the current amplitude, from Figure 10 It can be seen from the figure that when 1a, 1b, 1c, and 1d are excited with the same amplitude, and the feed phases are 180°, 0°, 0°, and 180° respectively, the energy is coupled to the three poles corresponding to the connection points 1a and 1c respectively One arm 112 of the first half-wave oscillator of the...

Embodiment 2

[0056] Figure 9 It is the H plane pattern at 3.3, 3.45 and 3.6GHz of the sub-array without adopting the array arrangement and feeding mode of the present invention, and the pattern includes the main polarization and cross polarization ratio curves.

[0057] Figure 11 It is a vector current distribution diagram at 3.45 GHz when the tripole antenna unit 1 involved in the present invention is arrayed in a conventional manner (connection points 1a, 1b, 1c, and 1d are excited with equal amplitude and phase). Figure 11 The scale on the left represents the current density distribution, the lighter the color, the larger the current amplitude, and the darker the color, the smaller the current amplitude. From Figure 11 It can be seen from the figure that when the connection points 1a, 1b, 1c, and 1d are excited with the same amplitude and phase, the transmitted energy is coupled to one arm 112 of the first half-wave oscillator and the other arm 132 of the first half-wave oscillato...

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Abstract

The invention discloses an antenna array for improving cross polarization discrimination of a tripole antenna, comprising four identical tripole antenna units, a feeding network and a reflector, wherein the four tripole antenna units are sequentially rotated with respect to a center point and are mounted on the reflector. The invention adopts rotating and placing tripole antenna unit and matchingthe corresponding port of each unit with proper phase; Compared with the prior art, the cross-polarization discrimination degree of the invention is improved; The invention has no space waste and overcomes the problem of low cross polarization discrimination in large-scale commercial use of the tripole antenna.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201810662823.9 filed with the China Patent Office on June 25, 2018, and the application title is "antenna array for improving tripole antenna cross-polarization discrimination", the entire content of which is incorporated by reference incorporated in this application. technical field [0002] The invention belongs to the technical field of mobile communication, and relates to an antenna array for improving the cross-polarization discrimination degree of a tripole antenna. Background technique [0003] Existing base station antennas usually use ±45° dual polarization to combat multipath effects. The application number is 201220661202.7, and the title of the invention is "ultra-broadband dual-polarization base station antenna radiation unit". The application number is 201310628350.8, the title of the invention is "antenna and array antenna", and the publication date is Ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q19/10H01Q21/00H01Q21/20
Inventor 黄河李小平刘彦明
Owner XIDIAN UNIV
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