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A Rectangular Beamforming Antenna with Half Power Angular Outer Lobe Falling Fast

A half-power angle and beamforming technology, which is applied to antenna unit combinations, antennas, electrical components and other directions with different polarization directions, to reduce adjacent cell interference, good rectangular beamforming effect, and reduce production costs and maintenance costs Effect

Active Publication Date: 2020-11-06
BEIJING INST OF SPACECRAFT SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the conventional rectangular array implements rectangular beamforming through the method of amplitude and phase weighting, but the antenna has deficiencies in the rectangular forming effect, lobe drop, and the number of array elements, so it is necessary to study and optimize a new rectangular beamforming antenna. It is of great significance to improve the frequency reuse of the communication system and reduce the cost by reducing the number of array elements and improving the drop-off ability of the outer lobe of the rectangular beam half-power angle.

Method used

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  • A Rectangular Beamforming Antenna with Half Power Angular Outer Lobe Falling Fast
  • A Rectangular Beamforming Antenna with Half Power Angular Outer Lobe Falling Fast
  • A Rectangular Beamforming Antenna with Half Power Angular Outer Lobe Falling Fast

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example 1

[0022] A rectangular beamforming antenna with a working frequency of 2.3GHz to 2.7GHz uses a total of 16 array elements for sparse distribution, such as figure 1 As shown, the array element adopts ±45° polarized dipole antenna, and the coordinates of each array element center in the xoy coordinate system are A1(31,-31), A2(31,31), A3(-31,31) , A4(-31,-31), B1(93,-31), B2(93,31), B3(31,93), B4(-31,93), B5(-93,31), B6( -93,-31), B7(-31,-93), B8(31,93), C1(155,0), C2(0,155), C3(-155,0), C4(0,-155) , where the unit is mm.

[0023] figure 2 The amplitude and phase distributions are given when the beam width is 48°~56°, in which the unit excitation amplitude in group A is the largest and consistent (set the unit excitation amplitude in group A as 0dB), and the unit excitation amplitude in group B is - 16.5dB, the unit excitation amplitude of group C is -11.5dB. The excitation phases of the units in group A and group B in the array are the same, while the excitation phases in gr...

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Abstract

The invention provides a rectangular beam forming antenna with half-power angle outer lobe rapid fall. The rectangular beam forming antenna comprises three groups of subarrays. The arrangement mode of the three groups of subarrays is that an N*N subarray A group is taken as a center; N array elements are increased at the upper side, lower side, left side and right side of the A group of subarray to form a B group of subarrays; not more than N array elements are expanded at the upper side, lower side, left side and right side of the B group of subarrays to form a C group of subarrays; the N is greater than or equal to 1; the excitation amplitudes of the array elements in the same group of subarrays are the same; the excitation amplitude of the array elements in the A group of subarrays is the maximum; the phases of the array elements in the A and B groups of subarrays are the same; and the difference between the phase of the array elements in the C group of subarrays and the phases of the array elements in the other groups of subarrays is 180 degrees. According to the beam forming antenna, the relatively low number of array elements is used, and the rectangular beam half-power angle outer lobe rapid fall is realized.

Description

technical field [0001] The invention relates to a rectangular beam-forming antenna with rapidly falling half-power angular outer lobes, belonging to the technical field of antennas and wireless communications. [0002] technical background [0003] When some important events are held in large-scale venues, the number of communications increases sharply, and the available frequency resources are limited. Therefore, frequency reuse technology is required to increase the communication capacity. However, the shape of the radiation pattern of the antenna has a great influence on the quality of cellular communication. In order to meet the communication coverage requirements of the stadium, the lobes of the antenna need to tend to be rectangular in the cross-sectional direction, and at the same time, the lobes outside the half-power angle of the antenna are required to drop rapidly. Since the conventional rectangular array implements rectangular beamforming through the method of am...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/24H01Q3/28H01Q3/30
CPCH01Q3/28H01Q3/30H01Q21/24
Inventor 徐明明国爱燕韩运忠高文军张涛马炳蔺祥宇吕争
Owner BEIJING INST OF SPACECRAFT SYST ENG
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