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Double polarization dual-band radiating device

A technology of radiation device and radiation element, applied in the field of radiation elements, can solve the problems of difficulty in obtaining dual-band radiation elements, difficulty in dual-polarization directional network, etc.

Inactive Publication Date: 2009-12-16
ARIALCOM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It is thus still difficult to obtain an easily manufacturable dual-band radiating element with two linearly polarized orthogonal paths greatly separated over a large frequency band
It is even more difficult to realize a dual-polarization directional network comprising a plurality of such radiating elements and providing a good purity of polarization

Method used

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  • Double polarization dual-band radiating device

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Embodiment Construction

[0023] These figures mainly contain certain characteristic elements, so they are not only used to better explain the invention, but also to define the invention where necessary.

[0024] exist figure 1 , figure 2 and image 3 Similar elements in the devices shown are designated by the same reference numerals, and these figures show four dipoles forming a square, referenced 1 to 4, cut in a metal plate 5 having a central through hole 6 The open end of a radiation cavity 7 leads to the central through hole. The length of the side of the square formed by each dipole is usually equal to half the wavelength of the wave of frequency F1 radiated by the dipole, so that the half-power opening of the beam approaches 65° in the horizontal plane.

[0025] It should however be noted that the distance (d) between the two parallel dipoles of the radiating panel 5 and thus the side length of the square formed by the four dipoles 1 to 4 largely determines The directivity of the radiation ...

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Abstract

The invention concerns a device comprising a first radiating element operating in a first frequency band F1, consisting of four dipoles (1, 2, 3, 4) in square arrangement and a second radiating element (23) operating in a second frequency band F2 consisting of at least one dipole arranged in the center of the square of dipoles (1, 2, 3, 4) forming the first radiating element, each dipole being center-fed by a balun. The set of radiating elements is arranged above a reflector (24). The dipoles (1, 2, 3, 4) forming the first radiating element and the baluns (8, 9, 10, 11) associated therewith are produced in a common metal plate (5), each balun of a dipole consisting of a close-circuit slotted line cut out in the metal plate (5) along a direction perpendicular to the dipole axis. The second radiating element (23) consists of at least one dipole arranged inside a metal cavity (7) located in the center of the metal plate (5). The invention is applicable to cellular radio communication networks.

Description

technical field [0001] The invention relates to antennas and their radiating elements, in particular for use in base stations of cellular radio communication networks of the GSM or UMTS type. Background technique [0002] A dual polarized radiating element can be made as a dual dipole radiating antenna, with each dipole consisting of two collinear lengths of conductor. The length of each segment is substantially equal to a quarter of the operating wavelength. The dipoles are mounted on a structure of the energy supply and their position is above a reflector (overall view). Through the backward radiation reflection of the dipoles, the directivity of the diagram derayonnement of the assembly thus formed can be fine-tuned. [0003] It is known to realize an orthogonally polarized radiation device operating in two frequency bands in which a first radiation element is arranged around a second radiation element, said first radiation element being driven by a frequency at a first...

Claims

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Application Information

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IPC IPC(8): H01Q21/24H01Q21/30H01Q19/10H01Q1/52H01Q25/00H01Q1/24
CPCH01Q1/246H01Q5/0075H01Q25/001H01Q19/108H01Q1/521H01Q21/30H01Q21/24H01Q5/42
Inventor 穆斯塔法·贾卢勒
Owner ARIALCOM