CN202495565U

CN202495565U - Connecting structure in antenna and antenna

Info

Publication number: CN202495565U
Application number: CN2012201007752U
Authority: CN
Inventors: 郭朝阳; 段德钦; 刘明生; 王政东
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-03-16
Filing date: 2012-03-16
Publication date: 2012-10-17
Anticipated expiration: 2022-03-16

Abstract

The utility model provides a connecting structure in an antenna and an antenna comprising the structure. The connecting structure of the antenna comprises at least two metal layers and metal connecting pieces used for connecting the at least two metal layers. Each metal connecting piece comprises a boss blocked on one side of the at least two metal layers, and a connecting part penetrating through the at least two metal layers, wherein the outer surface of the connecting part is provided with an insulating layer. The antenna comprises the connecting structure. The insulting layer can effectively realize insulation in connecting two metal layers or multiple metal layers by using the metal connecting pieces, thereby significantly reducing a PIM value of the antenna.

Description

Syndeton in the antenna and antenna

Technical field

The utility model relates to antenna technology, relates in particular to syndeton and antenna in a kind of antenna.

Background technology

In high-power, multichannel emission system, the nonlinear characteristic of various passive devices can produce the more high order harmonic component with respect to operating frequency, and these harmonic waves mix with operating frequency can produce one group of new frequency, and influence is communication normally.

Along with the development of communication network, increasingly high to the performance requirement of antenna for base station.(Passive Inter-Modulation abbreviates as: PIM) value is one of important indicator of weighing antenna quality to the passive intermodulation of antenna product.In antenna product, the connection between bilayer even multiple layer metal comprises multiple modes such as screw connection, the connection of plastic cement screw.Various connected modes all might cause the increase of PIM value.For example, under the screw connecting mode, unreliable contact can take place with the metal that is connected in the periphery of screw, increases the PIM value; Plastic cement screw intensity is low, tangible creep properties is arranged, and As time goes on screw deformation meeting increases, and causes the contact pressure of metalwork to diminish, and causes PIM to increase.How reducing the PIM value of antenna product, is that those skilled in the art have technical problem to be solved.

The utility model content

The utility model provides a kind of syndeton that is used for lowering the antenna of PIM value, comprising two metal layers at least and the metal connecting piece that is used to connect said two metal layers at least; It is characterized in that said metal connecting piece comprises:

Backstop is at the boss of said one side of two metal layers at least and pass the connecting portion of said two metal layers at least, and the outer surface of said connecting portion is provided with insulating barrier.

Syndeton in the aforesaid antenna; Said metal connecting piece also comprises: backstop is at the fixture of the said opposite side of two metal layers at least; Said fixture and said connector connect, so that said two metal layers at least is folded between said fixture and the said boss.

Syndeton in the aforesaid antenna also is arranged with bullet pad and/or plain cushion on the said connecting portion, said bullet pad, said plain cushion all are arranged at said boss and said at least between the two metal layers.

Syndeton in the aforesaid antenna, said insulating barrier is positioned at the contact position of said connecting portion and said two metal layers at least.

Syndeton in the aforesaid antenna, said insulating barrier is for being formed at the insulating medium layer of said connecting portion outer surface through injection moulding or coating method, and perhaps, said insulating barrier is the insulating element that is sheathed on said connecting portion outer surface.

Syndeton in the aforesaid antenna, said insulating element are insulating sleeve.

Syndeton in the aforesaid antenna, the said non-metallic layer that also is provided with between the two metal layers at least.

Syndeton in the aforesaid antenna, said non-metallic layer be following one or more: radome, insulation spacer, end cap, plastic parts.

Syndeton in the aforesaid antenna, said metal connecting piece are screw; Perhaps, said boss is a nut, and said connecting portion is the bolt that is used with said nut; Said fixture is a clamp nut.

Syndeton in the aforesaid antenna, said two metal layers at least be following one or more groups: support arm and inner support; Reflecting plate and inner support; DIN head and reflecting plate; Oscillator and reflecting plate; Metal spacing block and reflecting plate.

The utility model also provides a kind of antenna, comprises aforesaid syndeton.

The technique effect of the utility model is: each other insulation when insulating barrier can effectively be realized between bilayer even multiple layer metal connecting through metal connecting piece, significantly reduce the PIM value of antenna thus.

Description of drawings

The antenna structure view that Fig. 1 provides for the utility model embodiment one;

Fig. 2 is the partial enlarged drawing of the syndeton in the circled antenna among Fig. 1;

Fig. 3 is the part sectioned view of Fig. 2;

Fig. 4 is the part sectioned view of Fig. 2 of another form.

Embodiment

The antenna structure view that Fig. 1 provides for the utility model embodiment one, Fig. 2 are the partial enlarged drawing of the syndeton in the circled antenna among Fig. 1, and Fig. 3 is the part sectioned view of Fig. 2.To content shown in Figure 3, the antenna that the utility model provides can comprise a place or many places syndeton as shown in Figure 2 in conjunction with Fig. 1.Wherein, comprise two

metal layers

4 and 6 at least in the syndeton in the antenna, selectable, can also be provided with non-metallic layer 5 between the metal level 4 and 6.Syndeton in this antenna also comprises the metal connecting piece 1 that is used to connect two metal layers 4 at least and 6.This metal connecting piece 1 comprises: backstop is at the boss 1A of two metal layers one side at least and pass two metal layers 4 at least and 6 connecting portion 1B.Outer surface at connecting portion 1B is provided with insulating barrier 7.Each other insulation when this insulating barrier 7 can effectively be realized between bilayer even multiple layer metal connecting through metal connecting piece significantly reduces the PIM value of antenna thus.

Here need to prove that under a kind of execution mode,

metal level

4 and 6 can be the support arm and the inner support of antenna, non-metallic layer 5 can be the radome in the antenna; Under also a kind of execution mode,

metal level

4 and 6 can be reflecting plate and inner support, and non-metallic layer 5 can be an insulation spacer; Under another execution mode,

metal level

4 and 6 can be AN connector (DIN head) and the reflecting plate that the DIN chemistry can be formulated, and non-metallic layer 5 can be the end cap in the antenna; Under another execution mode,

metal level

4 and 6 can be oscillator and reflecting plate, and non-metallic layer 5 can be a plastic parts; Under the another kind of execution mode,

metal level

4 and 6 can be metal spacing block and reflecting plate, and non-metallic layer 5 can be an insulation spacer.And and the like, do not do here and give unnecessary details.

Here need to prove that the boss 1A and the connecting portion 1B that form metal connecting piece 1 can be integrated, also can be that branch is body formed.Integrated like screw, dividing body formed is nut like boss 1A, and connecting portion 1B is bolt of being used with nut or the like.Though what in Fig. 3, provide is the structure of integrated metal connecting piece 1, not in order to limit the protection range of the utility model.

On the basis of above-mentioned execution mode; In order further two

metal layers

4 and 6 at least to be fixed; This metal connecting piece 1 can further include: backstop is at the fixture 1C of two

metal layers

4 and 6 opposite sides at least; This fixture 1C and connector 1B connect, so that two

metal layers

4 and 6 is folded between fixture 1C and the boss 1A at least.Wherein, as shown in Figure 3, being connected of being set up between fixture 1C and the connector 1B can be that fixture 1C is set in the mode on the connector 1B.Fixture 1C is preferably clamp nut.

On the basis of above-mentioned execution mode, in order further to reduce the PIM value of antenna, can also be arranged with bullet pad 2 and/or plain cushion 3 on the connecting portion 1B, bullet pad 2, plain cushion 3 all can be arranged on boss 1A and at least between the two metal layers 4 and 6.Effectively like this avoid contacting between boss 1A and the metal level, the contact of rigidity has been become a kind of flexible contact, effectively reduced the PIM value.Wherein, when comprising bullet pad 2 with plain cushion 3 simultaneously, preferred bullet pad 2 contacts with boss 1A, and plain cushion 3 contacts with two metal layers at least.Need to prove,,, also can not contact in order to practice thrift cost with bullet pad 2 and/or plain cushion 3 so insulating barrier 7 can contact with bullet pad 2 and/or plain cushion 3 because bullet pad 2 is not a metal material with plain cushion 3.

Fig. 4 is the part sectioned view of Fig. 2 of another form, and is as shown in Figure 4, in order to save the material of insulating barrier 7, reduces cost, and this insulating barrier 7 can only be positioned at the contact position of connecting portion 1B and double layer of metal 4 at least and 6.That is to say that insulating barrier 7 can be covered with the outer surface of whole connecting portion 1B, also can be coated in and bullet pad 2, plain cushion 3,

metal level

4,6 contacted positions, perhaps only be positioned at and

metal level

4,6 contacted positions.

The implementation of above-mentioned insulating barrier 7 has multiple; As be formed at the insulating medium layer of connecting portion 1B outer surface through the injection moulding mode; Perhaps be formed at the insulating medium layer of connecting portion 1B outer surface through coating method (like nonconducting sealing processing etc.); Or be set in the insulating element of connecting portion 1B outer surface, preferred, insulating element can be an insulating sleeve.Like what provide among Fig. 3 is that insulating barrier 7 is the situation of insulating medium layer, and what provide among Fig. 4 is that insulating barrier 7 is for to be set in the insulating element on the connecting portion 1B, like the situation of insulating sleeve.

Syndeton in the antenna that the utility model embodiment provides, if there is not insulating barrier, the unreliable contact can take place with connector in metal level, can produce harmonic circuit when electric current flows through this zone, thereby causes the rising of antenna PIM value.Each other insulation when insulating barrier can effectively be realized between bilayer even multiple layer metal connecting through metal connecting piece significantly reduces the PIM value of antenna thus.

In order to describe the beneficial effect of the utility model more intuitively, be exemplified below: when having non-metallic layer 5, be that radome,

metal level

4 and 6 are respectively that the support arm and the inner support of antenna is that example describes with non-metallic layer 5.Radome has been isolated in the outside of antenna with bullet pad, plain cushion and support arm, and inner support and the inner radiant body of antenna have been wrapped in the inside of radome together, is through the radome insulation between the interior support arm, but through the metal connecting piece common ground that is connected.Electromagnetic wave can be penetrated into the inside of support arm connected system in this and anchor ring, support arm lower surface, inner support contact with radome in the face of cylinder of the connecting portion of metal connecting piece, bullet pad and plain cushion inner cylinder face, support arm surface produces periodically induced current through radome; If the face of cylinder of connecting portion bumped with support and just can change original faradic periodicity with playing plain cushion this moment, thereby produce harmonic wave and cause bad phenomenon such as having no chance deterioration of intermodulation value or instability.And the scheme that the utility model provides through separating with dielectric with the periphery of metal connecting piece collision, just can guarantee that faradic periodicity is stable, can avoid the generation of high order harmonic component, thereby can evade intermodulation problem for no reason at all.

What should explain at last is: above each embodiment is only in order to the technical scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of each embodiment technical scheme of essence disengaging the utility model of relevant art scheme.

Claims

1. A connection structure in an antenna, comprising at least two metal layers and metal connectors for connecting the at least two metal layers; it is characterized in that the metal connectors include:

The boss is stopped at one side of the at least two metal layers, and the connection part passing through the at least two metal layers, the outer surface of the connection part is provided with an insulating layer.

2. The connecting structure in the antenna according to claim 1, characterized in that, the metal connecting piece further comprises: a fixing piece that stops on the other side of the at least two metal layers, and the fixing piece is connected to the other side of the at least two metal layers. The connection is established with the connecting piece, so that the at least two metal layers are sandwiched between the fixing piece and the boss.

3. The connection structure in the antenna according to claim 1, characterized in that, the connecting part is also sleeved with spring pads and/or flat pads, and the spring pads and the flat pads are both arranged on the between the boss and the at least two metal layers.

4 . The connecting structure in the antenna according to claim 1 , wherein the insulating layer is located at a contact position between the connecting portion and the at least two metal layers.

5. The connecting structure in the antenna according to claim 1, wherein the insulating layer is an insulating medium layer formed on the outer surface of the connecting part by injection molding or coating, or the insulating layer is The insulating part is sheathed on the outer surface of the connecting part.

6. The connection structure in the antenna according to claim 5, wherein the insulating component is an insulating sleeve.

7 . The connection structure in the antenna according to claim 1 , wherein a non-metal layer is further arranged between the at least two metal layers.

8. The connecting structure in the antenna according to claim 2, wherein the metal connecting piece is a screw; or, the boss is a nut, and the connecting part is a bolt used in conjunction with the nut; The fixing part is a compression nut.

9. The connecting structure in the antenna according to any one of claims 1 to 8, characterized in that, the at least two metal layers are one or more of the following groups: an outer bracket and an inner bracket; a reflector and Inner bracket; standard connector DIN head and reflector made by German Institute for Standardization; vibrator and reflector; metal spacer and reflector.

10. An antenna, characterized by comprising the connecting structure according to any one of claims 1 to 9.