A wideband dual-polarized base station antenna for imt-advanced systems

A base station antenna and dual-polarization technology, which is applied in the field of broadband dual-polarization base station antennas and microstrip patch antennas, can solve the problems of complex antenna feeding structure and increased antenna array

Inactive Publication Date: 2011-12-28
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The feeding structure of this antenna is complex, since the two feeding ports are on the same plane, an air bridge must be used
Shi-Chang Gao et al. introduced a slot-coupled broadband dual Polarized antenna, this antenna also uses a double

Method used

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  • A wideband dual-polarized base station antenna for imt-advanced systems
  • A wideband dual-polarized base station antenna for imt-advanced systems
  • A wideband dual-polarized base station antenna for imt-advanced systems

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Embodiment Construction

[0022] specific implementation plan

[0023] figure 1 and figure 2 An exemplary design device for a broadband dual-polarized base station antenna for an IMT-Advanced system is described. According to the illustration, the device mainly includes a metal reflector, a feed layer, two radiation layers and nylon isolation columns. The metal reflector 1 adopts a 1mm thick aluminum plate, and four round holes with a diameter of 3mm are drilled on the reflector, and its function is to facilitate fixing the reflector and the isolation column with plastic screws. There are two vertical sides on both sides of the reflector, which are used to control the half-power lobe width of the antenna, and the height of the sides is 15mm. The feed layer 2 is composed of two dielectric boards, the microstrip line 21 on the dielectric board 22 is port 1, the microstrip line 25 on the dielectric board 24 is port 2, and 23 is a slotted floor. shape seen in image 3 . The two feed ports of the feed...

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Abstract

The invention discloses a base station antenna that is applied to an international mobile telecommunication-advanced (IMT-Advanced) system of a fourth generation wireless mobile communication system. The antenna unit employs a mode of multi-layer microstrip paster antenna and a basic structure of the antenna comprises a metal reflecting plate, a microstrip feeding layer, two radiating layers and a plurality of nylon insulating columns. The greatest innovation of the invention lies in an ultrabroad band characteristic of the antenna; a novel arrowhead coupling feeding groove and a double-layer radiation patch are employed; and a bandwidth can reach 49.5% on the condition that a standing-wave ratio is less than 1.5. On the basis of a reasonable design of a reflecting plate, a half-power lobe width of the antenna is a value caused by adding 6 degrees to 65 degrees or by subtracting 6 degrees from 65 degrees in a whole working frequency band range; and a convergence degree of a wave beam of the antenna has a good performance. According to the invention, a corner feeding mode is employed to carry out feeding and a dual polarization with plus/minus 45 degrees is realized on the condition that it is avoided that a radiation patch is rotated by 45 degrees, so that it is beneficial to reduce a whole length of an antenna array after arrangement of the array. On the basis of the basic structure that is based on the technical scheme of the invention, other concrete embodiments of the invention can be constructed only by reasonably changing a size of a radiation patch, a shape of a slotted floor and spaces between all layers.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, and relates to a microstrip patch antenna, in particular to a broadband dual-polarization base station antenna for the fourth-generation wireless mobile communication system IMT-Advanced. Background technique [0002] ITU (International Telecom Union) issued a circular letter to countries in February 2008 to solicit IMT-Advanced technical proposals from countries and standardization organizations. In October 2009, IMT-Advanced, the air interface standard for the new generation communication system, was completed. (International Mobile Telecommunication-Advanced) solicitation. IMT-Advanced is launched by ITU to meet the needs of global mobile communications in the next 10 to 15 years. It is defined as a mobile system with new capabilities beyond IMT-2000. This system can provide a wide range of telecommunication services: mobile and fixed The network supports an increasing number of a...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q5/01H01Q13/08H01Q19/10H01Q1/12H01Q21/24H01Q5/10
Inventor 杨仕文罗伟龚雪熊伟聂在平
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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