CN101950836A

CN101950836A - Coaxial attenuator

Info

Publication number: CN101950836A
Application number: CN2010105019434A
Authority: CN
Inventors: 韦诚
Original assignee: ZHENJIANG JINRUNXIN ELECTRON S&T CO Ltd
Current assignee: ZHENJIANG JINRUNXIN ELECTRON S&T CO Ltd
Priority date: 2010-10-11
Filing date: 2010-10-11
Publication date: 2011-01-19

Abstract

The invention discloses a coaxial attenuator used in the communication industry, electronic equipment and radars. The coaxial attenuator is provided with a plug, a socket and an attenuation sheet arranged between the plug and the socket, wherein the upper surfaces and the lower surfaces of the left end and the right tend of the attenuation sheet are respectively provided with a semicircular bracket in a contacting mode; the section of the semicircular bracket is in a stepped shaft structure, the large end thereof is matched with the sleeve of the attenuator, and the outer wall of the small end thereof is tightly sheathed with an elastic snap ring; the left end and the right end of the attenuation sheet and the central position of the width direction of the attenuation sheet are respectively provided with a contact needle; the contact needle is provided with a needle-like tail and a C-shaped elastic contact opening; the needle-like tails of the contact needles on the left end and the right end are respectively in fixed contact with the inner conductor of a contact pin and the inner conductor of a jack; and the C-shaped elastic contact openings of the contact needles on the left end and the right end are respectively clamped on an input microstrip line and an output microstrip line. The invention has the advantages of simple structure, convenient installation and good contact characteristic, can prevent torsion failure on the attenuation sheet due to the rotation of the inner conductor, and improves the radio-frequency performance.

Description

Coaxial attenuator

Technical field

The present invention relates to microwave passive component, relate in particular to the microwave coaxial fixed attenuator that in the communications industry and electronic equipment and radar, uses.

Background technology

Coaxial fixed attentuator is a kind of of microwave component, is widely used in the equipment such as microwave communication, radar.Coaxial fixed attentuator must satisfy the electric of system and mechanical performance requirement, will accomplish in batch process that simultaneously technology is simple, qualification rate is high, production cost is low.Coaxial fixed attentuator is made up of coaxial connector and attenuator, and coaxial connector comprises plug and socket two parts.Generally, attenuator is the π type thick film circuit that adopts ceramic base material to make, and general employing welding contact contacts with end face during assembling, not only assembling difficulty, and also very easily broken when assembling, rate of finished products is low, has influenced the performance of attenuator.Some attenuators adopts attenuator to weld mutually with inner wire in the coaxial connector, in use, and owing to the rotation meeting of inner wire causes torque failure to attenuator.

Summary of the invention

The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art part, provide a kind of safe and reliable, have good radiofrequency characteristics and Rational structure, realization is easy, production technology is simple, cost is lower, be used for the microwave coaxial fixed attenuator of microwave communication.

The technical solution used in the present invention is: have plug, socket and setting attenuator therebetween, plug comprises shell, and enclosure has coaxial contact pin inner wire, and the shell afterbody is the attenuator sleeve; Socket comprises another shell, another enclosure has coaxial jack inner wire, another shell afterbody is another attenuator sleeve, attenuator is a square structure, the left end of its Width center is the input microstrip line, right-hand member is the output microstrip line, both sides are ground connection microstrip lines, the left side of attenuator, each contact is provided with a semi-circular bracket on the top and bottom at right two ends, the external diameter of semi-circular bracket equates with the width of attenuator, the cross section of semi-circular bracket is a multidiameter shape structure, its big end and attenuator sleeve match, its small end outer wall tightens and is with a snap ring, and snap ring and another attenuator sleeve match; At the left and right two ends of attenuator, in the center of attenuator Width a contact pin is set respectively, contact pin has aciculiform afterbody and C shape Elastic Contact mouth two parts; The aciculiform afterbody of the contact pin of the left and right end of attenuator fixedly contacts with contact pin inner wire, jack inner wire respectively, and the C shape Elastic Contact mouth of the contact pin of the left and right end of attenuator is stuck in input microstrip line, output microstrip line part respectively.

The invention has the beneficial effects as follows: 1, adopt contact pin with spring function, make itself and hole resilient engagement, can guarantee that the contact performance between contact pin and the connector inner wire is good, can prevent again owing to the connector inner wire rotates the torque failure to attenuator that causes.The C shape elastic interface of contact pin can make contact pin guarantee that by horizontally slipping on attenuator contact pin is coaxial with inner wire and attenuator, guarantee that simultaneously contact pin is reliable with contacting of attenuator, at length direction the bigger margin of tolerance can be arranged, improve radio-frequency performance.2, attenuator adopts two semi-circular bracket and snap ring to fix, and is simple in structure, simple installation, and the internal diameter that can make two semi-circular bracket mates by the impedance requirement with the external diameter of contact opening one end of contact pin, can improve radiofrequency characteristics.

Description of drawings

Fig. 1 is a structure half sectional view of the present invention;

Fig. 2 is an A-A profile among Fig. 1;

Fig. 3 is the enlarged drawing of contact pin 8 among Fig. 1;

Fig. 4 is the vertical view cutaway drawing of attenuator 11 among Fig. 1;

Among the figure: 2. plug; 3. socket; 4. contact pin inner wire; 5. jack inner wire; 6. dielectric; 8. contact pin; 9. semi-circular bracket; 10. snap ring; 11. attenuator; 12. dielectric; 21. shell; 22. big end; 23. attenuator sleeve; 31. shell; 32. small end; 33. attenuator sleeve; 111. ground connection microstrip line; 112. input microstrip line; 113. output microstrip line.

Embodiment

Referring to accompanying drawing 1 and accompanying drawing 2, the present invention is made up of coaxial connector and the attenuator 11 that is installed in coaxial connector inside, and wherein coaxial connector is made up of plug 2 and socket 3, and attenuator 11 is installed between plug 2 and the socket 3.Plug 2 comprises its shell 21, and at shell 21 inner coaxial installation dielectric 6 and contact pin inner wires 4, the afterbody of shell 21 is attenuator sleeves 23.Socket 3 comprises its shell 31, and at shell 31 another dielectric 12 of inner coaxial installation and jack inner wires 5, the afterbody of shell 31 is another attenuator sleeves 33.Attenuator 11 is coaxial center line, contact pin inner wire 4 axis and the jack inner wire 5 axis threes of Width.

Referring to Fig. 4, attenuator 11 is a square structure, and the left end of Width center is ground connection microstrip lines 111 for input microstrip line 112, right-hand member for output microstrip line 113, both sides.Referring to Fig. 1,2,4, a semi-circular bracket 9 is installed in each contact on the top and bottom at the left and right two ends of attenuator 11, and the external diameter of semi-circular bracket 9 equates with the width of attenuator 11, and the end face of semi-circular bracket 9 is contacted with ground connection microstrip line 111.The cross section of semi-circular bracket 9 is a multidiameter shape structure, the big end 22 and the attenuator sleeve 23 of semi-circular bracket 9 match, tightly be with a snap ring 10 on the outer wall of small end 32, snap ring 10 adopts the processing of beryllium-bronze elastomeric material, and snap ring 10 matches with another attenuator sleeve 33.

Referring to Fig. 1,3, left and right two ends at attenuator 11, and a contact pin 8 respectively is installed in the center of attenuator 11 Widths, contact pin 8 adopts the beryllium-bronze elastomeric material to make, contact pin 8 has aciculiform afterbody 82 and C shape Elastic Contact mouth 81 two parts, the aciculiform afterbody 82 of the contact pin 8 of attenuator 11 left ends inserts in the elastic hole of contact pin inner wire 4, fixedly contacts with contact pin inner wire 4.The aciculiform afterbody 8 of the contact pin 8 of attenuator 11 right-hand members inserts in the elastic hole of jack inner wire 5, contacts with the elastic hole internal fixation.The C shape Elastic Contact mouth 81 of the contact pin 8 of attenuator 11 left ends is stuck in input microstrip line 112 parts of attenuator 11, and the C shape Elastic Contact mouth 81 of the contact pin 8 of attenuator 11 right-hand members is stuck in output microstrip line 113 parts of attenuator 11.

When the present invention assembles, attenuator 11 is placed in the middle of two semi-circular bracket 9 earlier, put snap ring 10 again, utilize the elasticity of snap ring 10 that attenuator 11 is fixing, then, contact pin 8 is stuck in attenuator 11 two ends, and forms coaxial state, snap ring 10 not only plays fixation, has guaranteed that also two semi-circular bracket 9 contact with the good of ground connection microstrip line 111 of attenuator 11.Under the effect of C shape Elastic Contact mouth 81, can guarantee the input microstrip line 112 of contact pin 8 and attenuator 11 and contact resistance and the power requirement that the contact pressure between the output microstrip line 113 satisfies electronic component, simultaneously owing to adopt Elastic Contact, make contact pin 8 to slide in right amount, to guarantee both axialities at attenuator 11 upper edges input microstrip line 112 and output microstrip line about 113.The internal diameter of attenuator sleeve 33 parts of the socket 3 of two semi-circular bracket 9 that assemble and the external diameter of snap ring 10 and coaxial connector and attenuator sleeve 23 parts of plug 2 is taked the loose fit tolerance, to guarantee the coaxial of two semi-circular bracket 9 and snap ring 10 and connector.

Claims

1. coaxial attenuator, have plug (2), socket (3) and setting attenuator (11) therebetween, plug (2) comprises shell (21), and shell (21) inside has coaxial contact pin inner wire (4), and shell (21) afterbody is attenuator sleeve (23); Socket (3) comprises another shell (31), another shell (31) inside has coaxial jack inner wire (5), another shell (31) afterbody is another attenuator sleeve (33), attenuator (11) is a square structure, the left end of its Width center is an input microstrip line (112), right-hand member is an output microstrip line (113), both sides are ground connection microstrip line (111), it is characterized in that: the left side of described attenuator (11), each contact is provided with a semi-circular bracket (9) on the top and bottom at right two ends, the external diameter of semi-circular bracket (9) equates with the width of attenuator (11), the cross section of semi-circular bracket (9) is a multidiameter shape structure, its big end (22) matches with attenuator sleeve (23), its small end (32) outer wall tightens and is with a snap ring (10), and snap ring (10) matches with another attenuator sleeve (33); At the left and right two ends of attenuator (11), in the center of attenuator (11) Width a contact pin (8) is set respectively, contact pin (8) has aciculiform afterbody (82) and C shape Elastic Contact mouth (81) two parts; The aciculiform afterbody (82) of the contact pin (8) of the left and right end of attenuator (11) fixedly contacts with contact pin inner wire (4), jack inner wire (5) respectively, and the C shape Elastic Contact mouth (81) of the contact pin (8) of the left and right end of attenuator (11) is stuck in input microstrip line (112), output microstrip line (113) part respectively.