CN201230091Y

CN201230091Y - Radio frequency coaxial connector

Info

Publication number: CN201230091Y
Application number: CNU2008201511146U
Authority: CN
Inventors: 谢光荣; 蒲斌; 克劳德·博仕东
Original assignee: SHANGHAI RADIALL ELECTRONIC CO Ltd
Current assignee: SHANGHAI RADIALL ELECTRONIC CO Ltd
Priority date: 2008-07-22
Filing date: 2008-07-22
Publication date: 2009-04-29
Anticipated expiration: 2018-07-22

Abstract

The utility model discloses a radio frequency coaxial connector, which comprises a socket and an adapter; wherein, the socket comprises an external conductor, an insulator and a central conductor; the adapter comprises an external conductor, an insulator and a central conductor as well; the central conductor of the socket comprises a pointed end and a cylindrical main body; a section of contact part is also arranged between the pointed end and the main body; the large-diameter end of the frustum-shaped contact part is connected with the main body; and the small-diameter end is connected with the pointed end. The frustum-shaped contact part can allow a wide radial offsetting angle between the socket and the adapter and prevent large stress from being generated in the central conductor plughole of the adapter during radial offsetting. By enlarging the diameter of the central conductor, the strength and reliability of the connector are enhanced. Meanwhile, after the diameter of the central conductor is enlarged, the impedance of an air clearance area at the interconnection interface of the connector can be reduced, impedance matching is enhanced, and thereby, the performance of the connector is improved.

Description

Radio frequency (RF) coaxial connector

Technical field

The utility model relates to a kind of radio frequency (RF) coaxial connector.

Background technology

Radio frequency (RF) coaxial connector can be used for circuit board to circuit board, circuit board to the interconnection of radio-frequency module or radio-frequency module to radio-frequency module.In these application scenarios, market developing trend is that the tolerance of two relative positions between the connected element is increasing, and their manufacturing is just easy more like this, and cost is also low more.

Have at present several circuit boards to the interconnection technique of circuit board allow between plate axially and radial deflection: the oldest a kind of technology is based on the connector of the formula of inserting certainly of standard, as SMB and MCX, have plug and socket with circuit board interconnect, as shown in Figure 1, the inner wire of these connectors and outer conductor all have the mode that is cross-linked of a kind of contact pin and jack.This connected mode allows limited axial dipole field.Because the axial and radial deflection amount that the flexible jack of internal and external conductor can bear is very little, this makes that the connector of settling can be above three pairs on same circuit board; In order to address this problem, the second class circuit board interconnect technology has been used a kind of intermediate connector spare of call switching device, main product has MMBX and SMP product line on the market, adapter can have small rotation with respect to the socket that is fixed on the circuit board, thereby allow radially a skew, this skew equals Lsin (α), and wherein L is the length of adapter, and α is the rotating angle of adapter.As shown in Figure 2, the axial offset of the maximum circuit board spacing H of SMP and radial deflection angle be respectively ± 0.3 millimeter and ± 4 ° and and axial offset and the radial deflection angle of MMBX are respectively ± 0.70 millimeter with ± 4.5 °.Radial deflection angle between two circuit boards of interconnection is during greater than above-mentioned angle (± 4 °), and above-mentioned connector just is difficult to finish connection, and perhaps the adapter center conductor jack can be born bigger stress when connecting, thereby causes distortion or damage.

The utility model content

The technical problems to be solved in the utility model provides and a kind ofly can allow bigger radial deflection amount, avoids the adapter center conductor jack to produce the radio frequency (RF) coaxial connector of big stress simultaneously.

In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of radio frequency (RF) coaxial connector, comprise socket and adapter, described socket comprises outer conductor, insulator and center conductor, adapter also comprises outer conductor, insulator and center conductor, the center conductor of socket comprises a point and a columniform main part, also connect one section contact site between described point and the main part, described contact site is taper type, the end that its diameter is big links to each other with main part, and the end that diameter is little links to each other with point.

Preferably, the diameter A=0.66-1.06mm of described socket center conductor main part, the length C=1.6-2.6mm of contact site, frustum angle of inclination beta=0.5 of contact site °-4 °.

Further, the diameter A=0.86mm of described socket center conductor main part, the length C=2.1mm of contact site, frustum angle of inclination beta=2 of contact site °.

The beneficial effects of the utility model are: the center conductor of socket forms contact matching by the center conductor jack of its contact site and adapter, the contact site of taper type can allow that bigger radial deflection angle is arranged between socket and the adapter, avoids the adapter center conductor jack to produce big stress simultaneously.

The utility model increases the intensity and the reliability of connector by the mode that increases center conductor diameter, and when being connected with bigger radial deflection angle between socket and the adapter, the center conductor of socket is not yielding or fractureed; After center conductor diameter increases simultaneously, the resistance value of the high impedance areas at place, air gap, connector interconnect interface place is reduced, improved the impedance matching of whole connected system, thereby improved the performance of connector.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is existing a kind of structural representation of plugging in the coaxial connector of formula certainly.

Fig. 2 is the structural representation of the coaxial connector of existing a kind of tape relay device.

Fig. 3 is the partial structurtes schematic diagram of the utility model coaxial connector.

Fig. 4 is the outline drawing of the utility model coaxial connector jack center conductor.

Among the figure: 1, socket 11, socket outer conductor 12, socket center conductor 13, socket insulator 121, main part 122, contact site 123, point 2, adapter 21, adapter outer conductor 22, adapter center conductor 23. adapter insulators 3, air gap

Embodiment

As shown in Figure 3, the utility model radio frequency (RF) coaxial connector comprises socket 1 and adapter 2, and socket 1 comprises outer conductor 11, center conductor 12 and insulator 13.Adapter 2 comprises outer conductor 21 and center conductor jack 22, insulator 23.In the time of in adapter 2 inserts sockets 1, the outer conductor plug 21 of adapter 2, center conductor jack 22 respectively with outer conductor 11, the center conductor 12 formation contact matching of socket 1.

As shown in Figure 4, wherein the center conductor 12 of socket comprises the contact site 122 and a point 123 of columniform main part 121, taper type, contact site 122 is between main part 121 and point 123, the end that contact site 122 diameters are big links to each other with main part 121, and the end that diameter is little links to each other with point 123.Preferred parameter is: the diameter A=0.66-1.06mm of socket center conductor main part, the length C=1.6-2.6mm of contact site, frustum angle of inclination beta=0.5 of contact site °-4 °.More excellent parameter is: the diameter A=0.86mm of socket center conductor main part, the length C=2.1mm of contact site, frustum angle of inclination beta=2 of contact site °.

Referring to Fig. 3, when socket 1 engages with adapter 2, the cooperation that contacts with the center conductor of adapter 22 jacks of the contact site of socket center conductor 12, because the surface of this contact site is the conical surface, therefore allow between socket 1 and the adapter 2 bigger radial deflection angle to be arranged, avoid adapter center conductor 22 to produce big stress simultaneously.

Further, the utility model has also strengthened the diameter A of socket center conductor 12, and when socket outer conductor 11 diameter of bore B were 3.85mm, adapter outer conductor 21 diameter of bores were 3.2mm, when making insulator with solid PTFE material, the center conductor diameter A of socket is 0.56mm.When adopting PTFE and air as the mix insulation body, the center conductor diameter A of socket increases to 0.86mm.Make it strongr, increase the reliability that connects; Simultaneously also reduce air gap, connector interconnect interface place 3, the impedance in zone, air gap is reduced, improved impedance matching, improved the performance of connector.

Claims

1. radio frequency (RF) coaxial connector, comprise socket and adapter, described socket comprises outer conductor, insulator and center conductor, adapter also comprises outer conductor, insulator and center conductor, the center conductor of socket comprises a point and a columniform main part, it is characterized in that: also connect one section contact site between described point and the main part, described contact site is taper type, the end that its diameter is big links to each other with main part, and the end that diameter is little links to each other with point.

2. radio frequency (RF) coaxial connector according to claim 1 is characterized in that: the diameter A=0.66-1.06mm of described socket center conductor main part, the length C=1.6-2.6mm of contact site, frustum angle of inclination beta=0.5 of contact site °-4 °.

3. radio frequency (RF) coaxial connector according to claim 2 is characterized in that: the diameter A=0.86mm of described socket center conductor main part, the length C=2.10mm of contact site, frustum angle of inclination beta=2 of contact site °.