JPH0635404Y2 - Microstrip line connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a microstrip line connector for connecting two microstrip lines.

“Prior Art” Conventionally, when connecting a microstrip line formed on a printed circuit board, it is converted into a coaxial line by a coaxial connector and then connected.

The transmission mode of the strip line and the transmission mode of the coaxial line are the same TEM wave mode, but because the shapes of both lines are different, matching was difficult to obtain at the junction of both lines.

Although the stripline can be realized at a low price, the coaxial connector was relatively expensive.

While the stripline is essentially an unbalanced mode, it is difficult to make a matched connection with a normal connector equivalent to a balanced 2-wire with balanced mode.

[Means for Solving the Problems] According to the present invention, a connector attached to a microstrip line in which a ground line and a signal line are opposed to each other with an insulating substrate sandwiched is provided in front of the body of insulating material. A pair of contact accommodating portions having a distance substantially equal to the thickness are formed in parallel with each other, and one of the contact accommodating portions accommodates the female female contact for almost all of them.
The signal female contact has an insertion portion into which the mating signal male contact is inserted, and the width is substantially the same within the accommodating portion, and the width is made substantially equal to the width of the signal line, and protrudes rearward from the body. I have a terminal. The female contact for ground is accommodated in the other of the contact accommodating portions over substantially the entire length thereof. The female contact for ground has a plate having substantially the same width in the accommodating portion and wider than the width of the female contact for signals, and has an insertion portion into which the mating male contact for ground is inserted. The connecting portion connected with the is protruding rearward from the body. Holes are formed in the body between the female contact for signal and the female contact for ground.

The relative permittivity of this hole portion becomes small, the characteristic impedance between the female contact for signal and the female contact for ground rises, and the matching with the strip line is achieved.

"Embodiment" FIGS. 1 to 4 show an embodiment of the present invention. One of the microstrip lines 22 to be connected is an insulating substrate.
The signal line 23 and the ground line 33 are formed so as to face each other across 43, and the other microstrip line 47 is similarly formed so that the signal line 45 and the ground line 46 face each other while sandwiching the insulating substrate 44. ing.

The body 11 made of an insulating material has a rectangular parallelepiped shape.
A pair of contact accommodating portions 12 and 13 penetrating in the front-rear direction in parallel with each other is formed at 11 with an interval substantially equal to the thickness of the insulating substrate 43. The contact accommodating portions 12 and 13 are slit-shaped holes facing each other, and the rear portion is narrowed as a terminal lead-out portion.

The female contact 14 for signal is accommodated in one contact accommodating portion 12 over substantially the entire length thereof, and the female contact for ground is substantially accommodated in the other contact accommodating portion 13 over the entire length thereof.
Fifteen are accommodated. The signal female contact 14 has both side edges of the plate portion 16 folded back so that the contact portion 17 is located in the front portion and the holding portion is located in the rear portion.
18, 19 are integrally formed, and the plate portion 16, the contact portion 17, and the holding portions 18, 19 form an insertion portion into which the mating signal male contact is inserted. A protrusion 21 is pushed out to the plate portion 16 so as to face the tip of the contact portion 17. The signal female contact 14 has substantially the same width in the contact accommodating portion 12,
Its width is made substantially equal to the width of the signal line 23 of the strip line 22. A terminal 24 is integrally provided at the rear end of the plate portion 16, and the terminal 24 projects rearward from the back surface of the body 11.

In the female contact 15 for ground, both side edges of the plate portion 25 are folded back so that a contact portion 26 is integrally formed at the front portion and pressing portions 27 and 28 are integrally formed at the rear portion, and the plate portion 25, the contact portion 26 and the pressing portion 27 are formed. , 28 form an insertion portion into which the mating male contact for ground is inserted. A protrusion 29 is pushed out to the plate portion 25 so as to face the tip of the contact portion 26. A terminal 31 is integrally formed at the rear end of the plate portion 25, and the terminal 31 is projected rearward from the back surface of the body 11. A metal plate 32 is disposed on the side of the signal female contact 14 in contact with the plate portion 25. The plate 32 has almost the same width in the contact accommodating portion 13, and the width thereof is larger than the width of the plate portion 25 and wider than the width of the signal female contact 14. In this example, the plate 32 has a width substantially equal to the width of the ground line 33 of the strip line 22. The plate 32 projects rearward from the back surface of the body 11 to form a connecting portion connected to the ground wire 33.

The socket connector combined with this plug connector is
An opening 35 is formed in the front surface of the body 34 of the insulating material, and the body 11 of the plug connector can be inserted into and removed from the opening 35.
On the bottom plate of the opening 35 of the body 34, the signal male contact 36 and the ground male contact 37 are planted so as to face each other. The terminal 38 of the signal male contact 36 projects rearward from the back surface of the body 34, and the terminal 39 of the ground male contact 37 projects rearward from the back surface of the body 34. Male contact for ground
The width of the base portion 41 of 37 is made substantially equal to the width of the plate 32.

Between the female contact 14 for signal and the female contact 15 for ground of the plug connector, a hole 42 is formed from the rear surface of the body 11.
Is formed up to near the front surface. The width of the hole 42 is substantially equal to the width of the plate 32. The back surface of the body 11 of the plug connector is brought into contact with the end surface of the strip line 22, the terminal 24 is soldered to the signal line 23, the plate 32 is soldered to the ground wire 33, and the terminal 31 is soldered to the plate 32. It
Terminals 38 and 39 of the socket connector are stripline 47
The terminal 38 is connected to the signal line 45, and the terminal 39 is connected to the ground line 46, respectively.

When the body 11 of the plug connector is fitted into the body 34 of the socket connector, the male signal contact 36 is press-fitted between the plate portion 16 and the contact portion 17 of the female signal contact 14, and the male male contact 37 is grounded. It is press-fitted between the plate portion 25 and the contact portion 26 of the female contact 15 for strip line.
22 and the strip line 47 are connected.

In the above description, the female contact 15 for ground is composed of two members, that is, the plate portion 25 side and the plate 32 side, but these may be integrated.

[Effect of Device] According to this device, since the hole 42 exists between the signal female contact 14 and the ground female contact 15, the hole 42
The relative permittivity of the portion is reduced, and the characteristic impedance of the signal female contact 14 and the ground female contact 15 is increased. That is, the size of the hole 42 can be selected to achieve impedance matching between the connector and the strip line 22.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG.
FIG. 3 is a sectional view taken along line A of FIG. 3, FIG. 3 is a sectional view taken along line B of FIG. 1, and FIG. 4 is a sectional view taken along line C of FIG.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Naoki Hirasawa 5-33-1 Shiba, Minato-ku, Tokyo Inside NEC Corporation (56) References Japanese Patent Publication No. 51-15581 (JP, B2) Microfilm (JP, U) of the contents and drawings attached to the application for 61-193023 (Shokai Sho 63-99690)

Claims (1)

[Scope of utility model registration request] 1. A connector which is attached to a microstrip line in which a ground line and a signal line are opposed to each other with an insulating substrate sandwiched therebetween, the connectors being formed on the front surface and parallel to each other with a spacing substantially equal to the thickness of the insulating substrate. A body made of an insulating material having a pair of contact accommodating portions, and an insertion portion that is accommodated in one of the contact accommodating portions over substantially the entire length and into which the mating signal male contact is inserted, and is substantially the same in the accommodating portion. And the width of the signal line is substantially equal to the width of the signal line, and the signal female contact has a terminal protruding rearward from the body, and is accommodated in the other of the contact accommodating portions over substantially the entire length thereof. The mating female contact for ground has a plate that is approximately the same width in the accommodating section and is wider than the width of the signal female contact. A female contact for ground, which has an inserting portion to be inserted, and a connecting portion connected to the ground wire is projected rearward from the body, and the female contact for signal and the female contact for ground are connected to the body. A microstripline connector comprising the formed hole.