JPH11312558A - Connector with wideband expanding function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To expand transmission band and transmission distance by combining a wideband filter formed by interposing a composite magnetic body comprising a single or a plurality of thin film magnetic bodies which have specified compositions and the self impedance of a TP pattern part between thin plate substrates, and a specific impedance element formed by winding a signal wire on an apparent magnetic body, and a constant current drive system passing constant current at all times, independently of the load state. SOLUTION: A composite magnetic body formed by combining a single or a plurality of thin-film magnetic bodies having the same thickness (magnetic body thickness of 0.01 μm-500 μm) and the same heat treatment condition with the self impedance of a TP pattern part is interposed between thin substances, and a signal wire is wound on an apparent magnetic body to form a wideband filter. The material composition of the thin film magnetic body is Fe: 1-30%, Ni: 30-82%, Cu: 0-20%, Mo: 0-10%, or Co: 60-80%, Nb: 1-20%, Zr: 1-20%, and the pattern width is set 10-50 μm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a high-speed PC (Personal Computer) interface.
Broadband expansion that enables expansion of the transmission band and transmission distance by canceling the cable loss by a combination of impedance change and constant current driving to increase the cable loss in the high frequency range, which is a weak point of the cable. The present invention relates to a connector with function 1 and a cable and a terminal device incorporating the same.

[0002]

At present, the transmission speed of PCs and LANs interconnecting the PCs is increasing year by year, and accordingly, PC terminals are steadily increasing in speed. Among them, the current situation is that high-speed transmission characteristics have become an issue for relatively inexpensive electric wires and cables, and there is a tendency to shift to optical technology. However, if high-speed transmission is possible with electric wires and cables, the total cost is reduced and the O / E and E / O converters are not required, so that low power consumption can be achieved. Further, there is a great merit that the currently installed transmission medium can be used effectively. As shown in FIG. 5, the conventional IEEE 1394 cable currently used has a high speed transmission (400 Mbps Ma) such as image transmission.
This is a high-speed PC interface that can support x). However, the conventional IEEE 1394 interface 1 'has the following technical problems. 1. There are restrictions on the transmission distance. (Standard: 4.5m) It is considered to be affected by the power supply line.
0 m is the limit (actual evaluation value) Because of the shielded cable, there is a difficulty in handling. (The cable is thick and hard) Because of the shielded cable, connector terminal processing is complicated and expensive. Therefore, we have filed Japanese Patent Application No. Hei 10-09, January 9, 1998.
No. 32147 provided a broadband, thin noise filter. As a result, the technical problems of a wide band and a thin plate noise filter could be almost solved, but the technical problems of extending a transmission band and a transmission distance remained. The connector 1 with the broadband extension function of the present invention provided this time is:
This is to solve the technical problem of extending the transmission band and transmission distance.

[0003]

The first aspect of the present invention is as follows. A single or plural thin film magnetic materials having the same thickness and heat treatment conditions (including no heat treatment) and a TP (twisted-reel) pattern portion 9
The composite magnetic body 5 composed of a combination of the self-inductances described above is connected to two FPs having a TP (pair twisted re-
B. a wide-band CM filter 4 in which a signal line is connected by providing a connecting means at the same time as being sandwiched by the thin plate substrate 6 typified by C, and the signal line is wound around an apparent magnetic material; A composite magnetic material 5 comprising a combination of a single or a plurality of thin-film magnetic materials having the same thickness and heat treatment conditions (including no heat treatment) and the self-inductance of the signal pattern portion 7 is combined with a composite magnetic material 5 having a signal pattern portion 7. B. a special impedance element 3 sandwiched by a thin substrate 6 typified by two FPCs and connecting a signal line by providing a connection means, and winding the signal line around an apparent magnetic material; A connector 1 with a broadband extension function, comprising a combination of a constant current driving method in which a constant current always flows regardless of a load state. A second aspect of the present invention is a cable and a terminal device incorporating the connector 1 with the broadband extension function described in the first aspect.

[0004]

By adopting such a structure, as is apparent from the operation explanatory view of FIG. 2, the connector 1 with the broadband extension function of the present invention has the signal pattern 7 on the outer periphery of the laminated magnetic body 5. And a broadband coil having an inductance component. With respect to the increase in the high-frequency attenuation of the TP cable for high-speed transmission, the cable loss is canceled by utilizing the two characteristics (1) and (2). (1) A connector with a wideband extension function of the present invention: a connector with a wideband extension function in which the impedance of the special impedance element 3 increases as the frequency increases over a wide band and noise is taken. (2) Characteristics of high-speed low-current transmission system (ex. LVDS):
A constant current always flows regardless of the load state. The operation flow of the present invention is as follows. (1) As the frequency becomes higher, the loss of the cable increases due to the skin effect. ↓ (2) The impedance of the special impedance element rises. ↓ (3) Since the driver-circuit output is driven at a constant current, the output level rises. ↓ (4) Cancel cable loss by (1) to (3). Summarizing the above, the present invention provides a connector 1 with a broadband extension function in which the impedance increases with an increase in frequency.
(Special impedance element and wide-band CM filter for removing noise from inside and outside, which cancels the high-band attenuation originally possessed by the cable and enables distance extension and broadband transmission) As a specific characteristic, the impedance is in the range of 1 KHz to 10 GHz.
The dance changes in the range of 1Ω to 100KΩ.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a connector 1 with a broadband extension function of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1A is a basic configuration diagram of the connector 1 with a wideband extension function of the present invention, and FIG. 1B is an explanatory diagram of the connector 1 with a wideband extension function of the present invention. As is apparent from the figure, the connector 1 with a wide band expansion function of the present invention basically comprises a wide band CM filter 4 and a special impedance element 3, and is a combination of a constant current drive system. The broadband CM filter 4 and the special impedance element 3 have almost the same configuration such as an FPC and a magnetic material, but the wideband CM filter 4 is TP (twisted pattern section) and is compatible with a two-wire pair. On the other hand, the special impedance element 3 comprises a normal signal pattern section 7 instead of a TP (twist pattern section) 9. Next, specific examples of the present invention will be described below.

[0006]

【Example】

(1) Magnetic body thickness = 0.01 μm to 500 μm (2) Insulator thickness = 0.01 μm to 500 μm (3) Pattern width = 10 μm to 500 μm (4) Number of turns = 10 to 50 times (attenuation, Set appropriately according to band specifications) Setting conditions 1. Magnetic material (1) Material: Amorphous magnetic material: f-special setting of magnetic permeability by material composition, aging, etc. according to required characteristics. 1. Amorphous magnetic material composition used in the present invention: The following settings were made in consideration of a high magnetic permeability material. 1. Fe: 1 to 30% Ni: 30 to 82% Cu: 0 to 20% Mo: 0 to 10% Aging conditions: No heat treatment or heat treatment temperature: 500 to 1500 ° C. (2) Film thickness: Set as thin as possible to the extent that the effect of the skin effect is small. (3) Total thickness: The cross-sectional area is set to be large with multiple layers. 2. Pattern (1) Pattern width: Covers required current capacity
As thin as possible. (2) Pattern pitch: as small as possible to secure the magnetic path length. 3. Number of turns: Since L increases with the square of the number of turns, the number of turns is set to be large. 4. Insulator (1) Pattern / magnetic material: As thick as possible in consideration of high frequency characteristics. (2) Gap between magnetic bodies: as thin as possible. The thin substrate 6 typified by the FPC is composed of a normal insulating film, an adhesive, a copper foil pattern portion, an adhesive, and an insulating film sequentially laminated. Further, upper and lower patterns of the thin plate substrate 6 typified by the FPC are connected by through holes. In addition, the connector 1 with the broadband extension function of the present invention may be used by being incorporated in a cable and a terminal device. Here, the terminal device refers to a device represented by a patch panel, an outlet, a hub, a plug, a connector, and the like. FIG. 3 (a) is a perspective view of an embodiment of a cable incorporating the connector 1 with a broadband extension function of the present invention, and FIG.
FIG. 1 is a block diagram of an embodiment of a cable having a built-in connector 1 with a broadband extension function according to the present invention. FIG. 3 shows a case where a high-speed constant current driving method is applied, taking a typical LVDS as an example. Connector 1 with broadband extension function of the present invention
Increases the signal output voltage due to the interaction with the constant current drive. Accordingly, the noise from the line is also increased, so that only the noise is removed by the wideband CM filter 4, and the distance can be greatly extended as compared with the related art. Furthermore,
In the current LVDS transmission, the current value is kept considerably smaller than the conventional transmission current (3.5 mA standard value), so the radiated noise is small and there is often no problem.
If the countermeasures against input noise can be sufficiently implemented, the cable outer diameter can be reduced, so this advantage is very large. less than,
The flow is shown. (1) When low current transmission is performed at high speed, the cable attenuation greatly affects the transmission distance. ↓ (2) Since the high-frequency attenuation of the cable is affected by the skin effect, the attenuation cannot be reduced without increasing the conductor diameter. ↓ (3) If the conductor diameter is increased, it is necessary to increase the thickness of the insulator in order to make the characteristic impedance of the cable equal to that of the conventional product, and the outer diameter of the cable increases. ↓ (4) The high-speed PC interface has shifted to LVDS. Therefore, the influence of radiation noise is small. ↓ (5) If input noise can be removed with a wideband filter ↓ (6) No need for a shielded cable ↓ (7) Impedance is not significantly reduced by shielding. By the flow, high-speed and long-distance transmission can be realized by a combination of the wideband CM filter 4, the special impedance element 3, and the small-diameter high-speed non-shielded cable. Next, FIG. 4 shows a performance comparison test result of the connector 1 with the broadband extension function of the present invention and the conventional product. Specifically, I
As a result of comparison of the transmission possible distance (200 Mbps) using the EEE1394 (LVDS transmission) cable, the conventional product 1 and the conventional product 2 have a maximum of approximately 1
In contrast to 5 m, the product of the present invention has a maximum length of about 60 m, and it is clear that there is an effect of extending transmission distance. The details of the performance comparison test are as follows. 1. 1. Evaluation PC interface: IEEE1394 (LVDS) Cables used: (1) Conventional product 1 (6 cores with IEEE 1394 power line) Conventional product 2 (IEEE 1394 4 cores) (2) Product of the present invention (connector 1 with broadband expansion function of the present invention + high-speed non-shielded cable) 2. High speed non-shielded cable: 0.5φ conductor twisted pair cable Transmission speed 200Mbps 4. Transmission pattern 2 ²³ -1 5. Code CMI (CODE MARK INVERSION)

[0007] The connector 1 of the present invention with a broadband extension function
Has been described for the extension of the transmission distance, but it goes without saying that the transmission band can be extended.
Further, the connector 1 with the broadband expansion function of the present invention has been shown as a representative example, but the present invention is not limited to this, and a wide variety of applications are possible. As described above, it goes without saying that various modifications are included in the design within the scope of the present invention.

[0008]

As is evident from the above description, the connector 1 with a broadband extension function of the present invention is: Combination with the broadband CM filter 4 allows the cable outer diameter to be reduced. 2. High-speed, long-distance transmission using non-shielded cables is possible, and costs can be reduced. 3. Special impedance element 3 and broadband CM filter 4
The transmission distance can be extended with LVDS interface support by combining. 4. Since optical fibers and shielded cables are not used, terminal processing during construction is easy. 5. O / E, E unlike optical transmission
Since no / O converter is used, low power consumption is sufficient. Its industrial value is great because of its excellent effect.

[Brief description of the drawings]

FIG. 1A is a basic configuration diagram of a connector 1 with a broadband extension function of the present invention. (B) is an explanatory view of the connector 1 with a broadband extension function of the present invention.

FIG. 2 is an explanatory diagram of the operation of the connector 1 with a broadband extension function of the present invention.

FIG. 3A is a perspective view of an embodiment of a cable incorporating the connector 1 with a broadband extension function of the present invention. (B)
Case incorporating connector 1 with broadband extension function of the present invention
FIG. 2 is a block diagram of a bull embodiment.

FIG. 4 is a performance comparison test result between the connector 1 with the broadband expansion function of the present invention and a conventional product.

FIG. 5 is a perspective view of a conventional IEEE 1394 cable 1 '.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 Connector with broadband expansion function of the present invention 2 Terminating resistor 3 Special impedance element 4 Broadband CM filter (Common Mode filter) 5 Composite magnetic body composed of one or more thin-film magnetic bodies 6 Thin board represented by FPC 7 Signal Pattern section 8 Through hole 9 TP (pair twisted) pattern section 10 High-speed interface plug 11 High-speed transmission twisted pair cable 12 High-speed PC interface 1 'Conventional IEEE1394 cable -Bull

Claims (2)

[Claims] 1. A. Plate thickness (magnetic material thickness: 0.01 μm to 50
0 μm) and a single or a plurality of thin film magnetic materials having the same heat treatment conditions (including no heat treatment) (material composition (1): Fe: 1
30%, Ni: 30 to 82%, Cu: 0 to 20%, M
o: 0 to 10% or material composition (2): Co: 60 to 80
%, Nb: 1 to 20%, Zr: 1 to 20%) and TP (pair twist) pattern portion 9 (pattern width: 10 μm to 500 μm)
m), the composite magnetic body 5 composed of a combination of self-inductances is put into a TP (pair twisted) pattern portion 9 (pattern width:
B. a wide-band CM filter 4 in which a signal line is connected by providing a connecting means at the same time as being sandwiched between two thin-plate substrates 6 typified by two FPCs each having a thickness of 10 μm to 500 μm) and a signal line wound around an apparent magnetic material; A single or a plurality of thin film magnetic materials having the same plate thickness (magnetic material thickness: 0.01 μm to 500 μm) and the same heat treatment conditions (including no heat treatment) (material composition (1): Fe: 1 to 30%, N
i: 30 to 82%, Cu: 0 to 20%, Mo: 0 to 10
% Or material composition (2): Co: 60 to 80%, Nb: 1
-20%, Zr: 1-20%) and the self-inductance of the signal pattern portion 7 (pattern width: 10 μm-500 μm) is combined with the composite magnetic material 5 by the signal pattern portion 7 (pattern). And a special impedance element 3 in which a signal line is connected by providing a connecting means, and the signal line is wound around an apparent magnetic material, while being sandwiched between two thin plate substrates 6 typified by FPCs having a width of 10 μm to 500 μm). C. A connector 1 with a broadband extension function, comprising a combination of a constant current drive method in which a constant current always flows regardless of a load state. 2. A cable and a terminal device incorporating the connector 1 with a broadband extension function according to claim 1.