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Branch loading and parasitic structure-based base station antenna

A technology of parasitic structures and base station antennas, applied in antennas, resonant antennas, loop antennas, etc., can solve the problems of antenna impedance matching and radiation characteristics, high processing costs, low radiation gain, etc., to achieve mass production and antenna radiation The effect of high gain and stable radiation performance

Active Publication Date: 2019-09-13
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems caused by this method are: 1. Large dielectric loss; 2. Low radiation gain; 3. High processing cost
Although the invention reduces the size of the main radiation structure by using short metal pillars, the impedance matching and radiation characteristics of the antenna are affected by the limitation of the short metal pillar structure

Method used

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  • Branch loading and parasitic structure-based base station antenna
  • Branch loading and parasitic structure-based base station antenna
  • Branch loading and parasitic structure-based base station antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] refer to figure 1 , figure 2 , image 3 , Figure 4 and Figure 5

[0032] A base station antenna based on stub loading and parasitic structure loading, including a radiating structure 1, a reflector 2 and a feeding floor 3, the radiating structure 1 is composed of crossed dipoles 1.1, four identical angular metal posts 1.2, parasitic A metal ring 1.3, a microstrip feeder 1.4, a coaxial line 1.5, two identical short-circuit metal columns 1.6, a first dielectric plate 1.7, a second dielectric plate 1.8 and a third dielectric plate 1.9; the first dielectric plate 1.7 , the second dielectric plate 1.8 and the third dielectric plate 1.9 are located directly above the reflection plate; the crossed dipoles 1.1 and the feeding floor 3 are printed on the lower surfaces of the first dielectric plate 1.7 and the third dielectric plate 1.9 respectively ; The two identical short-circuit metal columns 1.6 are connected to the feeder floor 3;

[0033] The four identical angula...

Embodiment 2

[0042] The first dielectric plate 1.7, the second dielectric plate 1.8 and the third dielectric plate 1.9 are parallel to each other, and the distance between the first dielectric plate and the second dielectric plate is expressed as H1, wherein H1 is 5-20mm. H1 is 5mm.

[0043] The four identical angular metal pillars 1.2 are located at both ends of the diagonal line of the first dielectric plate 1.7, and are perpendicular to the first dielectric plate 1.7.

[0044] The length of each angular metal pillar 1.2 is expressed as L2, the height is expressed as H2, and the thickness is expressed as T1, wherein, L2 is 0.5-5mm, H2 is 5-20mm, and T1 is 0.5-3mm. L2 is 0.5mm, H2 is 5mm, and T1 is 0.5mm.

[0045] The parasitic metal ring 1.3 has a square ring structure, and the distance from the edge of the second dielectric plate is L3, wherein L3 is 0.5-5 mm. L3 is 0.5mm.

[0046] The line width of the parasitic metal ring (1.3) is expressed as W1, the width of each rectangular ring...

Embodiment 3

[0049] The first dielectric plate 1.7, the second dielectric plate 1.8 and the third dielectric plate 1.9 are parallel to each other, and the distance between the first dielectric plate and the second dielectric plate is expressed as H1, wherein H1 is 5-20 mm. H1 is 20mm.

[0050] The four identical angular metal pillars 1.2 are located at both ends of the diagonal line of the first dielectric plate 1.7, and are perpendicular to the first dielectric plate 1.7.

[0051] The length of each angular metal post (1.2) is expressed as L2, the height is expressed as H2, and the thickness is expressed as T1, wherein L2 is 0.5-5mm, H2 is 5-20mm, and T1 is 0.5-3mm. L2 is 5mm, H2 is 20mm, and T1 is 3mm.

[0052] The parasitic metal ring 1.3 has a square ring structure, and the distance from the edge of the second dielectric plate is L3, wherein L3 is 0.5-5 mm. L3 is 5mm.

[0053] The line width of the parasitic metal ring (1.3) is expressed as W1, the width of each rectangular ring is ...

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Abstract

The invention discloses a branch loading and parasitic structure loading-based small-size base station antenna unit. The branch loading and parasitic structure loading-based small-size base station antenna unit comprises a radiation patch, angular metal structures, a parasitic ring structure, a microstrip feeder, a coaxial feeder, short-circuit metal, a reflection plate, three different dielectricplates and a feeding floor, wherein the four angular metal structures are respectively arranged at tail ends of four dipole arms, the parasitic ring structure is arranged right below the radiation patch, and the reflection plate comprises a horizontal structure and metal baffle plates around the horizontal structure. By loading the angular metal posts at the tail ends of the dipole arms and loading the metal ring structure below the radiation patch, the size of the radiation patch is reduced by 25%, the impedance matching is good, and the radiation performance is stable; and with a structurethat the feeding floor and the reflection plate are separated, the antenna is flexible to assemble, and the antenna is suitable for mass production. The antenna can be applied to a base station antenna array under a limited space size condition.

Description

technical field [0001] The invention belongs to the field of communication technology, and further relates to a base station antenna based on branch loading and parasitic structure in the field of electromagnetic field and microwave technology, which can be applied to antenna arrays and multi-frequency antenna arrays under small column spacing. Background technique [0002] With the development of wireless communication technology, modern mobile communication base station antennas are developing in the direction of broadband, miniaturization, multi-standard system coexistence and low cost. As a crucial part of information transmission and reception in mobile communication systems, research on miniaturized, broadband base station antennas, and multi-mode coexistence base station antennas has attracted much attention. Under the conditions of bandwidth, stable pattern, and low cross-polarization, the miniaturization of the antenna structure is conducive to realizing broadband a...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/48H01Q1/50H01Q7/00H01Q9/26H01Q19/02H01Q19/10
CPCH01Q1/36H01Q1/38H01Q1/48H01Q1/50H01Q7/00H01Q9/265H01Q19/02H01Q19/104
Inventor 刘英黄盈黄铭初杨旭
Owner XIDIAN UNIV
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