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Broadband dual polarized antenna unit

A dual-polarized antenna and broadband technology, which is applied to antenna unit combinations, antennas, electrical components and other directions with different polarization directions, can solve the problems of difficult to meet relative bandwidth and limited antenna array bandwidth, and achieve good cross-polarization characteristics, High gain, good consistency effect

Active Publication Date: 2010-05-12
TONGYU COMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The relative frequency bandwidth of 1710-2400MHz exceeds 33%, and the relative frequency bandwidth of 1710-2700MHz is close to 45%. limit
In the existing design schemes of broadband oscillators, there are few relative bandwidths exceeding 45%. For example, the broadband oscillators described in patent No. ZL200820122837.3, CN 201174423Y, CN 101465475A, etc., have a relative bandwidth of only about 33%.

Method used

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  • Broadband dual polarized antenna unit

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, the broadband dual-polarized antenna of this embodiment includes a reflector 1 , a support body 2 , four radiation pieces 3 , a fixing block 4 and an excitation core wire 5 . The four radiation sheets 3 are symmetrical and perpendicular to each other, forming the radiation body of this embodiment.

[0029] The reflector 1 is a metal plate, which plays the role of reflecting electromagnetic waves and fixing it, and its thickness is negligible relative to the working wavelength.

[0030] The support body 2 is fixed on the reflection plate 1 to form a DC short circuit. The support body 2 is in the shape of a hollow cuboid with a wall thickness of 1 mm. The excitation core wire 5 is in an "n" shape. One end is disconnected to play a coupling role, and the other end passes through the reflector 1 downwards and is connected to the feed network on the back of the reflector 1 .

[0031] The support body 2 also forms a balanced balun, and the excita...

Embodiment 2

[0038] Such as Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the radiation sheet 3 in Embodiment 1 is a solid body, and this embodiment adopts a hollow structure.

Embodiment 3

[0040] Such as Figure 6 As shown, similar to Embodiment 2, the radiation sheet of this embodiment adopts another hollow structure.

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Abstract

The invention discloses a broadband dual polarized antenna unit, which comprises a radiator and a balanced feeding device, wherein the radiator consists of four radiation fins which are symmetric in pairs and are orthogonally distributed; the balanced feeding device consists of an excitation core wire and a balanced balun; the balanced balun is simultaneously formed into a support of each radiation fin; a symmetric radiation array is as long as a half of wavelength and is as wide as a quarter of the wavelength; each radiation fin further comprises a supporting area and a radiation area which are mutually adjacent; the two short sides and long sides of the radiation area and the two waists of the supporting area form a continuous curve; the ratio of the waist length of the supporting area to the length of the short side of the radiation area to the length of the long side of the radiation area is 1:1:2; and the two waists of each of the two adjacent radiation fins are arranged in parallel and are at an interval less than 0.1 wavelengths. The dual polarized antenna unit is a radiation oscillator which is relatively wider than the broadband and has good indexes, such as a standing-wave ratio and the like in a relatively wider bandwidth.

Description

[technical field] [0001] The invention relates to the field of mobile communication base station antennas, in particular to a broadband dual-polarized antenna. [technical background] [0002] Mobile communication is playing an increasingly important role in people's daily life. By the end of 2007, the number of mobile communication users in my country has exceeded 540 million, and more than 1 million base station antennas have been put into use. With the continuous increase of mobile communication services and types, the working frequency bands of various systems are also expanding. The working frequency of smart antenna in TD-SCDMA network is 1880-1920MHz, 2010-2025MHz, 2300-2400MHz. The communication frequency of DCS is 1710-1880MHz. The communication frequency of PCS is 1850-1990MHz. The communication frequency of UMTS is 1920-2170MHz. Part of the communication frequency band of WiMax (Worldwide Interoperability for Microwave Access) is 2300-2700MHz. Therefore, a mar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/24H01Q19/10
Inventor 陈宏亮成院波伍裕江张利华
Owner TONGYU COMM INC
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