A kind of SMA connector
The utility model relates to a kind of new construction SMA type connector.The utility model is suitable for but is not limited only to the wireless telecommunications power amplifier module.
The wireless telecommunications power amplifier module is high to the module reliability requirement, requires mounting or dismounting convenient to modular structure.At present, the common SMA connector that install the side adopts following dual mode usually, and the firstth, be screwed at sidewall and bore a hole then, second kind is to be welded on the pcb board; First kind of mode has restriction to the version of module, must adopt sidewall and housing isolating construction, and in the mounting means, when SMA received torsion, power was transferred on the PCB in second, and limited because of the PCB holding capacity, use brings risk very big to product.
The utility model content
The purpose of the utility model is, provides a kind of and can solve up tower and put and can cause LNA bypath system in the obstructed and reliable multi-carrier base station of stability and safety of up link after the fault.
The concrete scheme of the utility model is following: a kind of SMA connector comprises SMA type connector body and the SMA connector that is connected with SMA type connector body one end.
Said SMA type connector body outer surface offers thread groove.
The cross section of described SMA connector is " ten " font.
Said SMA connector is being provided with center conductor and grounding leg away from SMA type connector body one end.
The cross section of described center conductor is circular, and the cross section of described grounding leg is a rectangle.
Said SMA connector also is provided with the substrate mounting flange, the axis of said substrate mounting flange and the intersect vertical axis of grounding leg.And grounding leg is connected with the substrate mounting flange.
The bottom of said substrate mounting flange and center conductor bottom are in same horizontal line.
The number of said center conductor is 1, and the number of said grounding leg is 2.
The bottom of the center conductor on this connector is concordant with the bottom of substrate mounting flange, that is, the bottom of said substrate mounting flange and center conductor bottom are in same horizontal line.Thereby satisfy the SMA connector can with PCB welding closely, contact is good, 2 grounding legs weld together with pcb board, guarantee the good ground connection of connector, have guaranteed that connector has index well.
Thread groove on this connector and shield shell cooperate when installing, and shield shell only need carry out quit a post and thus leave it vacant according to the profile of thread groove, directly adds nut bullet pad outside and shields, and has improved capability of electromagnetic shielding; The conducting of the ability realization of substrate mounting flange on this connector and grounding leg and pcb board and metal substrate is electrically connected in addition, has greatly increased the ground connection performance of connector.
Connector is vertical with pcb board to be installed, and the RF output end mouth of suitable power amplifier module uses when having side to go out requirement.Through the use of this connector, not only simplify the shielding of RF output end mouth, improved the reliability of this RF output end mouth again.
Beneficial effect of the present invention: simplify the shielding construction of RF output end mouth, also improved the reliability of this prevention at radio-frequency port simultaneously, also reduced the security risk of pcb board.
Description of drawings
Fig. 1 surveys view for the utility model.
Fig. 2 is that the A of Fig. 1 in the utility model is to view.
Fig. 3 is the utility model upward view.
Fig. 4 be among the utility model embodiment one with pcb board annexation figure.
Fig. 5 be among the utility model embodiment one with the annexation figure of housing.
Label is expressed as respectively among the figure: 1, center conductor; 2, grounding leg; 3, substrate mounting flange; 4, thread groove; 5, SMA type connector body; 6, SMA connector; 8, pcb board; 9, shield shell; 10, nut bullet pad; 11, nut.
Below in conjunction with embodiment the utility model is done to specify further, but the execution mode of the utility model is not limited thereto.
Like Fig. 1,2, shown in 3, the utility model is made up of 2,2 substrate mounting flanges 3 of 1,2 grounding legs of 1 center conductor, SMA type connector body 5, SMA connector.
Wherein 2,2 substrate mounting flanges 3 of 1,2 grounding legs of 1 center conductor are arranged on the SMA connector, and SMA type connector body 5 is provided with thread groove.
Find out that from Fig. 42 grounding legs 2 and pcb board 8 weld together, guarantee the good ground connection of connector, guaranteed that connector has good index.Connector is in vertical installment state with pcb board 8 simultaneously.
And newly can consider that with being connected steadily of pcb board 8 wherein the bottom of substrate mounting flange 3 and center conductor 1 bottom are in same horizontal line from satisfying connector.Simultaneously, use screw.After running through pcb board 8, improve the through hole of substrate mounting flange 3 again, make that pcb board 8 can stable linking together with connector.
From Fig. 5, find out,, adopt in order to solve signal shielding problem in the utility model; A shield shell 9; Wherein, shield shell 9 has profile with thread groove 4 breach that is complementary, and connector is installed in this breach and goes out; Simultaneously behind the sheathed nut bullet pad 10 that is complementary with connector in the thread groove position of connector 4, a sheathed again nut 11 that is complementary with connector.At this moment, we only need nut 11 is screwed, and can reach good shield effectiveness.
Just can better realize the utility model as stated.