CN2770117Y

CN2770117Y - Radio-frequency grounding ring

Info

Publication number: CN2770117Y
Application number: CN 200520000388
Authority: CN
Inventors: 苏永革; 李�浩; 殷为民; 张希坤
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2005-01-11
Filing date: 2005-01-11
Publication date: 2006-04-05
Anticipated expiration: 2015-01-11

Abstract

The utility model discloses a radio-frequency grounding ring. The utility model is used in a wireless radio frequency module which comprises a printed-board welding radio frequency connector. The radio frequency grounding ring is a T-shaped tubular ring. Further more, the utility model dots the T-shaped tubular ring with conductive adhesives through the adoption of the T-shaped tubular ring which is made from inelastic conductive materials, lowers the cost of the radio frequency grounding ring and increases the availability of the radio frequency grounding ring. The utility model designs the radio frequency grounding ring into the T-shaped tubular ring, increases the contact surface of a shielding cover of the printed-board welding radio frequency connector as a result, allows the shielding cover to have a large opening and lowers the process precision requirements of the shielding cover. Further more, the utility model also dots the T-shaped tubular ring with conductive adhesives through the adoption of the T-shaped tubular ring which is made from conductive materials, lowers the cost of the radio frequency grounding ring and increases the availability of the radio frequency grounding ring.

Description

A kind of radio frequency ground loop

Technical field

The utility model relates to the wireless radio-frequency field, is meant a kind of radio frequency ground loop especially.

Background technology

In wireless radio frequency modules, often need use the interface unit that various radio frequency connectors input or output as radiofrequency signal, as radio-frequency devices, radio frequency connector will guarantee good large tracts of land ground connection, otherwise radiofrequency signal characteristic instability can take place, as echo reflection, scurry interference etc.

Printed board solder type radio frequency connector, the large tracts of land ground connection of adopting the radio frequency ground loop to realize radio frequency connector.The existing radio frequency ground loop that uses in the radio-frequency module of printed board solder type radio frequency connector that comprises adopts tubular structure, as shown in Figure 1.The use of radio frequency ground loop in the radio-frequency module that comprises printed board solder type radio frequency connector as shown in Figure 2, wherein, screening cover 201 is connected with the ground of printed board 202, radio frequency connector 203 is connected with screening cover 201 by radio frequency ground loop 204.The material of radio frequency ground loop 204 is the conductive elastomer that adds the metallic particles of conduction in elastic caoutchouc, the radio frequency ground loop made from conductive elastomeric material has certain deformation under the compression of screening cover, thereby guaranteed that the shell 2031 of radio frequency connector and base 2032 have excellent contact with radio frequency ground loop 204, and and then by radio frequency ground loop 204 and screening cover 201 realization large tracts of land ground connection.

Because the base diameter of printed board solder type radio frequency connector is very little, usually below 10mm, the external diameter of radio frequency ground loop is less than the diameter of radio frequency connector base, and to reserve the opening that the radio frequency connector shell passes through on the screening cover, guarantee the large-area contact of can trying one's best of radio frequency ground loop again, so the size requirements to the screening cover opening is very high, caused opening requirement on machining accuracy height to screening cover, increased cost.

In addition, because the material that existing radio frequency ground loop uses is a conductive elastomeric material, the price of this material own is very high, and conductive elastomeric material can not be used machine work, need to adopt the processing technology of die sinking, availability is poor, has further increased cost, thereby cause the cost of radio frequency ground loop very high, availability is poor.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of radio frequency ground loop, is used for comprising the wireless radio frequency modules of printed board solder type radio frequency connector, and this radio frequency ground loop can reduce the requirement on machining accuracy to the screening cover opening, reduces cost.

For achieving the above object, the utility model provides a kind of radio frequency ground loop, is used for comprising the wireless radio frequency modules of printed board solder type radio frequency connector, and this radio frequency ground loop is a T shape tubular ring.

Preferably, the material of above-mentioned radio frequency ground loop is the electric conductor elastomeric material.

Above-mentioned radio frequency ground loop may further include: conductive media, conductive media are arranged on the upper surface of T shape tubular ring.

Above-mentioned conductive media can be the elastic conduction pad.

Above-mentioned conductive media can also be conducting resinl.

Preferably, above-mentioned conducting resinl is a circulus, and its external diameter is less than the external diameter of T shape tubular construction, and internal diameter is greater than the internal diameter of T shape tubular construction.

Preferably, the material of above-mentioned T shape tubular ring is non-resilient electric conductor.

Above-mentioned non-resilient electric conductor can be aluminium alloy, red copper or copper alloy.

When above-mentioned non-resilient electric conductor was aluminium alloy, preferably, above-mentioned aluminum alloy T shape tubular ring surface had conductive oxide layer.

Preferably, above-mentioned conductive oxide layer is at T shape tubular ring upper surface, and between T shape tubular ring and conducting resinl.

As can be seen from the above technical solutions, in the utility model, by the radio frequency ground loop being designed to T shape tubular ring, increased contact-making surface with printed board solder type radio frequency connector screening cover, thereby allow shielding to be stamped bigger opening, reduce the requirement on machining accuracy of screening cover, also reduced cost;

Radio frequency ground loop in the utility model can also adopt non-resilient electric conducting material T shape tubular ring, and on T shape tubular ring and face that screening cover contacts, put conducting resinl, realized well contacting by conducting resinl with the large tracts of land of screening cover, and owing to adopted non-resilient electric conducting material, greatly reduce the cost of radio frequency ground loop, and realized good availability; In addition, the utility model is by adopting the material of aluminium alloy as the radio frequency ground loop, because aluminium alloy has good processing properties, and availability is good, and price is low, has further reduced the cost of radio frequency ground loop, has increased the availability of radio frequency ground loop; And then, by carrying out electric conductive oxidation earlier, put conducting resinl more thereon in the present embodiment in aluminum alloy surface, increased the conductive stability of radio frequency ground loop.

Description of drawings

Fig. 1 is the radio frequency ground loop stereogram of prior art;

Fig. 2 is the result of use cutaway view of radio frequency ground loop of the prior art;

Fig. 3 is the front view of first embodiment;

Fig. 4 be among Fig. 3 A-A to cutaway view;

Fig. 5 is the vertical view of first embodiment;

Fig. 6 is the result of use cutaway view of radio frequency ground loop among first embodiment;

Fig. 7 is the front view of second embodiment;

Fig. 8 be among Fig. 7 A-A to cutaway view;

Fig. 9 is the vertical view of second embodiment;

Figure 10 is the result of use cutaway view of radio frequency ground loop among second embodiment.

Embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, the utility model is described in further detail below in conjunction with accompanying drawing.

Among first embodiment of the present utility model, the radio frequency ground loop still adopts conductive elastomeric material, and it is shaped as T shape tubular structure, why claim that the radio frequency grounding loop structure is a T shape tubular structure, is because its front view is a T shape, and it is hollow, as shown in Figure 3.The A-A of radio frequency ground loop front view distinguishes as shown in Figure 4 and Figure 5 to cutaway view and vertical view.In the present embodiment radio frequency ground loop in use as shown in Figure 6, the upper surface of radio frequency ground loop 601 contacts with screening cover 201, lower surface contacts with radio frequency connector base 2032, inwall is connected with the shell 2031 of radio frequency connector.Because the upper surface area of radio frequency ground loop 601, has realized still having good contact effect with screening cover 201 greater than the lower surface area under the situation of the aperture area that increases screening cover 201, thereby realizes large tracts of land ground connection.

In first embodiment of the present utility model, still need to adopt conductive elastomer as material, can guarantee that the radio frequency ground loop contacts with screening cover and the good of radio frequency connector, but because conductive elastomer price height, availability is poor, the cost of radio frequency ground loop is still very high, and availability is also poor.In order to reduce the cost of radio frequency ground loop, and make the radio frequency ground loop have good availability, proposed second embodiment of the present utility model, below be described.

In the second embodiment of the present invention, radio frequency ground loop main part is still and adopts T shape tubular ring, and the non-resilient electric conducting material of its material selection can have the non-resilient electric conducting material of excellent conducting performance for copper alloy, red copper, aluminium alloy or other.Owing to select for use non-elastic material can reduce the conductive effect that contacts of radio frequency ground loop and screening cover, so between T shape tubular ring and screening cover, need to realize that by the favorable conductive media large tracts of land good conductive between the two contacts.This conductive media can be conducting resinl, also can be the elastic conduction pad, or other can realize the conductive media of large tracts of land good conductive contact between the two.In the present embodiment, be elaborated as conductive media with conducting resinl.

In the present embodiment, adhesive dots is at the upper surface of T shape tubular ring, thereby makes T shape tubular ring realize excellent contact conductive effect with screening cover by conducting resinl.The front view of present embodiment radio frequency ground loop, A-A to cutaway view and vertical view respectively as Fig. 7, Fig. 8 and shown in Figure 9.Wherein, 701 is conducting resinl, 702 is T shape tubular ring, the internal diameter of T shape tubular ring 702 cooperates by precision with the shell 2031 of radio frequency connector and base 2032 realizes excellent contact, the upper surface of T shape tubular ring 702 is realized excellent contact by conducting resinl 701 and screening cover 201, as long as the area of conducting resinl is enough big, just can realize that radio frequency connector contacts with the large tracts of land of radio frequency lid, reaches good ground connection effect.For the area that makes conducting resinl is enough big, can all cover conducting resinl at the upper surface of T shape tubular ring, also can put the conducting resinl of circulus in the above, be to save conducting resinl, be recommended in the conducting resinl of the upper surface point circulus of T shape tubular ring.As the conducting resinl of fruit dot circulus, it should be noted that the middle footpath of conducting resinl and half that the distance between the T shape tubular ring external diameter is greater than the conducting resinl width.

In the present embodiment, the preferred material of T shape tubular ring is an aluminium alloy, because aluminium alloy is cheap, and has good machinability.When the aluminium alloy material, for avoiding influencing electric conductivity after the aluminum alloy material surface oxidation, can carry out electric conductive oxidation to the surface of T shape tubular ring earlier, guarantee its conductive stability, then at the upper surface point conducting resinl of T shape tubular ring again.

Structure size for image explanation radio frequency ground loop, provide the reference dimension of one group of radio frequency ground loop: radio frequency ground loop T shape tubular ring upper surface external diameter is 9.00mm, the lower surface external diameter is 6.60mm, internal diameter is 4.60mm, T shape tubular ring total height is 2.3 ± 0.1mm, and upper stage shape height is 1.20mm; The footpath is 7.80mm in the conducting resinl, height 0.9mm, width 1.2mm.

More than be explanation to the utility model embodiment, therefrom as can be seen, in the utility model, by the radio frequency ground loop being designed to T shape tubular ring, increase the contact-making surface with screening cover, thereby allowed shielding to be stamped bigger opening, reduced the requirement on machining accuracy of screening cover; In addition, radio frequency ground loop in the utility model can also adopt non-resilient electric conducting material T shape tubular ring, and on T shape tubular ring and face that screening cover contacts, put conducting resinl, realized well contacting by conducting resinl with the large tracts of land of screening cover, and owing to adopted non-resilient electric conducting material, greatly reduce the cost of radio frequency ground loop, and realized good availability; Because aluminium alloy has good machinability, and availability is good, price is low, and the utility model also by adopting the material of aluminium alloy as the radio frequency ground loop, has further reduced the cost of radio frequency ground loop, has increased the availability of radio frequency ground loop; And then, by carrying out electric conductive oxidation earlier, put conducting resinl more thereon in the present embodiment in aluminum alloy surface, increased the conductive stability of radio frequency ground loop.

More than be explanation, in concrete implementation process, can carry out suitable improvement, to adapt to the concrete needs of concrete condition method of the present utility model to the utility model specific embodiment.Therefore be appreciated that according to embodiment of the present utility model just to play an exemplary role, not in order to limit protection range of the present utility model.

Claims

1, a kind of radio frequency ground loop is used for comprising the wireless radio frequency modules of printed board solder type radio frequency connector it is characterized in that this radio frequency ground loop is a T shape tubular ring.

2, radio frequency ground loop according to claim 1 is characterized in that, the material of described radio frequency ground loop is the electric conductor elastomeric material.

3, radio frequency ground loop according to claim 1 is characterized in that, described radio frequency ground loop further comprises: conductive media, described conductive media is arranged on the upper surface of T shape tubular ring.

4, radio frequency ground loop according to claim 3 is characterized in that, described conductive media is the elastic conduction pad.

5, radio frequency ground loop according to claim 3 is characterized in that, described conductive media is a conducting resinl.

6, radio frequency ground loop according to claim 5 is characterized in that, described conducting resinl is a circulus, and its external diameter is less than the external diameter of T shape tubular construction, and internal diameter is greater than the internal diameter of T shape tubular construction.

7, according to claim 5 or 6 described radio frequency ground loops, it is characterized in that the material of described T shape tubular ring is non-resilient electric conductor.

8, method according to claim 7 is characterized in that, described non-resilient electric conductor is aluminium alloy, red copper or copper alloy.

9, method according to claim 8 is characterized in that, described non-resilient electric conductor is an aluminium alloy, and described aluminum alloy T shape tubular ring surface has conductive oxide layer.

10, method according to claim 9 is characterized in that, described conductive oxide layer is at T shape tubular ring upper surface, and between T shape tubular ring and conducting resinl.