CN202749508U

CN202749508U - +/- 45-degree dual-polarized base station antenna

Info

Publication number: CN202749508U
Application number: CN 201220354170
Authority: CN
Inventors: 丁一军
Original assignee: Jiangsu Huacan Telecommunications Co Ltd
Current assignee: Jiangsu Huacan Telecommunications Group Co Ltd
Priority date: 2012-07-20
Filing date: 2012-07-20
Publication date: 2013-02-20
Anticipated expiration: 2022-07-20

Abstract

The utility model relates to a +/-45-degree dual-polarized base station antenna which is innovatively characterized by comprising a reflecting plate, wherein a plurality of radiating units are arranged on the reflecting surface of the reflecting plate, and a feeder network which is electrically connected with the radiating units is arranged on the back surface of the reflecting plate; each radiating unit is composed of four vibrators arranged in a diamond shape, each vibrator is integrally stamped to be T-shaped by a strip-shaped aluminum material, and the long axis of each vibrator forms a 45-degree included angle with the extension direction of the reflecting plate; and arms of the vibrators are connected with feeders of the feeder network via feed sheets, the feeders which are symmetrically arranged at a 45-degree angle are polarized at the 45-degree angle, and the feeders which are symmetrically arranged at a -45-degree angle are polarized at the -45-degree angle. Via the polarization orthogonality of the +45-degree angle and the minus 45-degree angle in the dual-polarized antenna with the structure aforementioned, the isolation degree between a +45-degree antenna and the -45-degree antenna can meet the requirement of interchange on the isolation degree among the antennas, a space interval is small, and a space volume is reduced; and the vibrator is integrally stamped to be T-shaped by the strip-shaped aluminium material, so that the dual-polarized antenna is simple in structure and low in manufacturing cost.

Description

A kind of positive and negative 45 ° of Bipolarization antenna for base station

Technical field

The utility model relates to a kind of antenna for base station, particularly a kind of positive and negative 45 ° of Bipolarization antenna for base station.

Background technology

In cell mobile communication systems, antenna is communicating equipment circuit signal and the electromagnetic transducer of space radiation, be the bridgehead of spacing wireless communication, so antenna for base station is the important component part of mobile communication system, its characteristic directly affects the overall performance of whole wireless network.In the mobile radio communication engineering design, should reasonably select antenna for base station according to the actual conditions such as covering requirement, telephone traffic distribution, anti-interference requirement and network service quality of network.

The directional base station (three sectors) of at present traditional GSM digital mobile communication network will use 9 antennas, 3 antennas of each fan-shaped use (space diversity, one two receipts), and antenna amount is many, and the space interval between the adjacent antenna is large, and weight is large, and installation requirement is high.

Dual polarized antenna is a kind of new antenna technology, made up+the mutually orthogonal antenna of 45 ° and-45 ° of two consequent pole direction and being operated in simultaneously under the transmission duplex pattern, so its most outstanding advantage is to save the antenna amount of single directional base station; And because dual polarized antenna is not high to setting up installation requirement, do not need expropriation of land to build tower, the iron prop that only needs a diameter 20cm of frame, dual polarized antenna is fixed on the iron prop by corresponding coverage direction gets final product, thereby saving capital expenditure, make simultaneously station layout more reasonable, the selected of site, base station is more prone to.But still have certain defective: present dual-polarized antenna structure is complicated, single, and manufacturing cost is high, can't be satisfied with the use of various varying environments.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of positive and negative 45 ° of Bipolarization antenna for base station of simple in structure, low cost of manufacture.

For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of positive and negative 45 ° of Bipolarization antenna for base station, its innovative point is: comprise reflecting plate, the reflecting surface of reflecting plate arranges some radiating elements, and the feeder network that is electrically connected with radiating element is established at the back side of reflecting plate; Radiating element is assumed diamond in shape by four oscillators and rearranges, and oscillator is stamped into T shape by a strip aluminium integral body, and each oscillator major axis and reflecting plate bearing of trend are 45 ° of angles; The oscillator arms of oscillator is connected with the feed line of feeding network by feed tab, and 45 ° of symmetrically arranged feed lines are aimed at 45 ° of polarization ,-45 ° of polarization of-45 ° of symmetrically arranged feed lines alignings.

The utility model has the advantage of: the dual polarized antenna of said structure, ± 45 ° polarization orthogonal can guarantee+and isolation between 45 ° and-45 ° of two slave antennas satisfies intermodulation to the requirement of isolation between antennas, and space interval is little, reduces spatial volume; Oscillator is stamped into T shape, simple in structure, low cost of manufacture by a strip aluminium integral body.

Description of drawings

Fig. 1 is the positive and negative 45 ° of Bipolarization antenna for base station vertical views of the utility model.

Fig. 2 is the utility model oscillator structure schematic diagram.

Embodiment

As shown in Figure 1, 2, comprise reflecting plate 1, radiating element 2, oscillator 21, feed tab 22, feed line 23.

The reflecting surface of said reflection plate 1 arranges some radiating elements 2, and the feeder network that is electrically connected with radiating element 2 is established at the back side of reflecting plate 1.

Radiating element 2 is assumed diamond in shape by four oscillators 21 and rearranges, and oscillator 21 is stamped into T shape by a strip aluminium integral body, and each oscillator major axis and reflecting plate 1 bearing of trend are 45 ° of angles; The oscillator arms of oscillator 21 is connected with the feed line 23 of feeding network by feed tab 22, and 45 ° of symmetrically arranged feed lines 23 are aimed at 45 ° of polarization ,-45 ° of polarization of-45 ° of symmetrically arranged feed lines 23 alignings.

Claims

1. positive and negative 45 ° of Bipolarization antenna for base station, it is characterized in that: comprise reflecting plate, the reflecting surface of reflecting plate arranges some radiating elements, and the feeder network that is electrically connected with radiating element is established at the back side of reflecting plate; Radiating element is assumed diamond in shape by four oscillators and rearranges, and oscillator is stamped into T shape by a strip aluminium integral body, and each oscillator major axis and reflecting plate bearing of trend are 45 ° of angles; The oscillator arms of oscillator is connected with the feed line of feeding network by feed tab, and 45 ° of symmetrically arranged feed lines are aimed at 45 ° of polarization ,-45 ° of polarization of-45 ° of symmetrically arranged feed lines alignings.