CN202178379U

CN202178379U - Broadband dual-polarization antenna radiation unit

Info

Publication number: CN202178379U
Application number: CN2011202047593U
Authority: CN
Inventors: 詹敏峰; 李俊; 邹光健; 陈韶明
Original assignee: GCI Science and Technology Co Ltd
Current assignee: GCI Science and Technology Co Ltd
Priority date: 2011-06-17
Filing date: 2011-06-17
Publication date: 2012-03-28
Anticipated expiration: 2021-06-17

Abstract

The utility model discloses a broadband dual-polarization antenna radiation unit which comprises a reflection plate, a radiation body and a feeder plate. The radiation body comprises four reversed-L shaped vibrator arms with identical shapes, wherein two of the four reversed-L shaped vibrator arms are symmetrically orthogonal; two opposite reversed-L shaped vibrator arms are combined into one group to form two dual-polarization vibrators with orthogonal polarization; a support arm is connected under each of the reversed-L shaped vibrator arms; the vibrator arms and the reversed-L shaped vibrator arms are integral structures; the radiation body is fixed on the reflection plate; two n-shaped feeder plates are positioned in the support arm and mutually appear in a crossed structure, and two n-shaped feeder plates and the radiation body are combined into a direct feeder structure or a coupling feeder structure. The radiation arms has a special L-shaped structure, so that the crossing polarization ratio is effectively improved; moreover, the broadband dual-polarization antenna radiation unit has the advantages of integrated design, simple structure, convenience in installation, wide frequency band and high gain.

Description

A kind of broadband dual polarized antenna radiating element

Technical field

The utility model relates to the antenna of mobile communication base station field, the radiating element of particularly a kind of broadband, high cross polarization ratio.

Background technology

In recent years, along with the development of mobile communication technology, increasing to the demand of Bipolarization antenna for base station.Market is increasing to the demand of the broadband antenna for base station that can contain a plurality of frequency ranges; Just can cover DCS (1710-1880MHz), PCS (1850-1990MHz), UMTS (1920-2170MHz), TD-SCDMA (1880-2690MHz) and frequency ranges such as WIMAX and WIFI such as a operating frequency at the antenna for base station of 1.7-2.7GHz; This just requires to have outside the broadband character, and is also increasingly high to the index request of cross polarization discrimination in addition.Radiating element has determined the performance of array antenna basically.At present, the technology that the dual polarization oscillator is adopted has two kinds: a kind of is two pairs of oscillators of coaxial quadrature, and another kind is the structure that four pairs of oscillators are formed a kind of parallelogram.Above oscillator adopts conventional half-wave dipole, dipole or folded dipole to form mostly; Owing to structural reason; All have common problem: cross-pole is better than not, can only reach the level of 8-9dB in the frequency range of broad, and the index that can't reach industry requirement is greater than 10dB.Therefore, it is necessary to design the radiating element of a kind of broadband, high cross polarization ratio.

The utility model content

The utility model has overcome above-mentioned technical disadvantages, a kind of broadband, high cross polarization ratio is provided, radiating element simple in structure, easily manufactured, stable.

For achieving the above object, the utility model adopts following technical scheme:

A kind of broadband dual polarized antenna radiating element comprises reflecting plate, radiant body, feed tab, and radiant body comprises four identical shaped " ┓ " type oscillator arms; Four symmetrical in twos quadratures of " ┓ " type oscillator arms, two relative oscillator arms are one group, form the dual polarization oscillator of two polarization orthogonal; Be connected with a support arm under each oscillator arms; The integrated mechanism of oscillator arms and support arm, on the radiant body fixation reflex plate, two feed tab that are " n " shape are arranged in support arm; Be decussate texture each other, form direct feed structure or coupling feed structure with radiant body.

" ┓ " type oscillator arms is linked together by the polygonal body of horizontal direction middle part hollow out and a vertical direction polygonal body and forms; Oscillator arms has certain clearance between any two; And have certain thickness, the polygon of the horizontal direction middle part hollow out in " ┓ " type oscillator arms is one of at least rounded, square, rhombus, triangle, octagon, ellipse and have in part radian square any one, the vertical direction polygonal body in " ┓ " type oscillator arms one of at least in semicircular in shape, square, triangle, " T " shape, " Π " shape, the half elliptic any one; Support arm is the cylinder of hollow; Perpendicular to oscillator arms, an end links to each other with oscillator arms and is " n " shape, and the other end fuses; Usually adopt aluminum alloy materials, form through die casting.

Compared with prior art; The beneficial effect that above scheme has is: this radiating element is through itself distinctive " ┓ " type oscillator structural design; Improve the relative bandwidth and the cross polarization ratio of oscillator; The cross polarization ratio greater than 12dB, guarantees to realize comparing index with the cross polarization of this array sky oscillator of being formed in broad frequency range.The radiating element main body adopts die cast metal one-shot forming result, has characteristics such as simple in structure, easily manufactured, reliable and stable.

Description of drawings

Fig. 1: the utility model radiating element is contained in the sketch map on the reflecting plate;

Fig. 2: utility model radiating element sketch map;

Fig. 3: feed tab sketch map;

Fig. 4: the utility model radiating element is contained in the schematic rear view on the reflecting plate;

Fig. 5: oblong arm sketch map;

Fig. 6: other example schematic 1;

Fig. 7: other example schematic 2;

Fig. 8: other example schematic 3;

Fig. 9: other example schematic 4;

Figure 10: other example schematic 5.

Embodiment

Below in conjunction with the accompanying drawing further explain: as shown in Figure 1, the utility model provides a kind of broadband dual polarized antenna radiating element, comprises reflecting plate 1, and the feed tab 4 of 2, four " ┓ " types of support arm oscillator arms 3 and two " n " shapes is formed.Radiant body comprises four identical shaped " ┓ " type oscillator arms; Four " ┓ " type oscillator arms 3 symmetrical in twos quadratures, two relative " ┓ " type oscillator arms 3 are one group, form the dual polarization oscillator of two polarization orthogonal; Be connected with a support arm 2 under each " ┓ " type oscillator arms; " ┓ " type oscillator arms 3 is integrated with support arm 2, and on the radiant body fixation reflex plate 1, two feed tab 4 that are " n " shape are arranged in support arm 2; Be decussate texture each other, form direct feed structure or coupling feed structure with radiant body.

As shown in Figure 2, oscillator arms 3 is made up of with oblong arm 32 the pentagon arm 31 of middle hollow out, and pentagon arm 31 is perpendicular with oblong arm 32, four oscillator arms pairwise orthogonals, and symmetry.Support arm 2 one ends link to each other with oscillator arms 3, and the two one-tenth 90 degree, are " Г " shape after the connection; Four support arm other ends are linked to be an integral body, and support arm is a hollow structure, and the cross section is an annular.

Feed tab 41 is as shown in Figure 3 with feed tab 42, is " n " shape, places two relative support arms respectively, and support arm facing each other forms " U " type Ba Lun balanced feeding, and feed tab plays incentive action.Its energisation mode has two kinds: a kind of is the coupling feed, guarantees to be spaced from each other between the two through spacer 43, and spacer is a working of plastics; Another kind is to connect feed, and terminal 431 positions of feed tab and support arm link together.

Support arm 2 and four oscillator arms 3 fuse, and have formed the radiating element radiant body of the utility model.Radiation arm facing each other is formed a kind of polarization, two pairs of mutually orthogonal formation dual polarizations of radiation arm, and radiating element can be formed vertical/horizontal polarization and ± 45 ° of dual-polarized array easily thus.

Fig. 4 is contained in the back view on the reflecting plate for the radiation radiant body; Radiant body is fastened on the reflecting plate by screw through screwed hole 7, and positions through two reference columns 6, and radiant body is encouraged by coaxial line; Coaxial outer conductor is soldered to pad 5, and coaxial inner conductor links to each other with feed tab 4.

Said oscillator arms is made up of pentagon arm of middle hollow out 31 and oblong arm 32, but shape do not limit to so, pentagon arm 31 can be respectively circle,, in square, the rhombus, triangle, hexagon, octagon, ellipse any one.Shown in Fig. 5-10, that oblong arm 32 can be respectively is semicircle,, square,, in the triangle, " T " shape, " Π " shape, half elliptic any one.

Claims

1. a broadband dual polarized antenna radiating element comprises reflecting plate, radiant body, feed tab, it is characterized in that:

Radiant body comprises four identical shaped " ┓ " type oscillator arms; Four symmetrical in twos quadratures of " ┓ " type oscillator arms, two relative " ┓ " type oscillator arms are one group, form the dual polarization oscillator of two polarization orthogonal; Be connected with a support arm under each " ┓ " type oscillator arms; " ┓ " type oscillator arms and support arm are integrated, and on the radiant body fixation reflex plate, two feed tab that are " n " shape are arranged in support arm; Be decussate texture each other, form direct feed structure or coupling feed structure with radiant body.

2. a kind of broadband dual polarized antenna radiating element according to claim 1 is characterized in that:

" ┓ " type oscillator arms is linked together by the polygonal body of horizontal direction middle part hollow out and a vertical direction polygonal body and forms.

3. a kind of broadband dual polarized antenna radiating element according to claim 2 is characterized in that:

The polygon of a horizontal direction in " ┓ " type oscillator arms middle part hollow out is one of at least rounded, square, rhombus, triangle, octagon, ellipse and have in part radian square any one.

4. a kind of broadband dual polarized antenna radiating element according to claim 2 is characterized in that:

Vertical direction polygonal body in " ┓ " type oscillator arms one of at least in semicircular in shape, square, triangle, " T " shape, " Π " shape, the half elliptic any one.

5. a kind of broadband dual polarized antenna radiating element according to claim 1 is characterized in that:

Described support arm is the cylinder of hollow, and perpendicular to oscillator arms, an end links to each other with oscillator arms and is " n " shape, and the other end fuses.