TWM626716U - Transmission line structure and transmission line device including the transmission line structure - Google Patents

Abstract

The present invention provides a transmission wire structure, which includes a first transmission wire bundle, a second transmission wire bundle, and a ground wire disposed between the first transmission wire bundle and the second transmission wire bundle. The first transmission wire bundle is covered by a first conductive covering member, the second transmission wire bundle is covered by a second conductive covering member, and the ground wire is in electrical contact with the outer surface of the first conductive covering member surface and the outer surface of the second conductive coating. The first transmission wire bundle and the second transmission wire bundle respectively include two transmission wires. This solves the problem of characteristic impedance drift, provides electrostatic protection, and reduces common mode effects, near-end crosstalk and far-end crosstalk. The present invention also provides a transmission line device having the above-mentioned transmission line structure.

Description

Transmission line structure and transmission line device having the same

The present invention provides a transmission line structure and a transmission line device, especially a transmission line structure and a transmission line device for transmitting audio and video signals or data signals, so as to provide electrostatic protection and reduce common mode effects, near-end crosstalk and far-end crosstalk. effect.

Referring to FIG. 1 , the conventional high-frequency transmission line 8 is a conventional outer covering member 80 covering a plurality of conventional transmission lines 81 arranged in a row. Each conventional transmission line 81 is also covered by a conventional inner covering member 82 to be insulated from each other. However, such a conventional high frequency transmission line 8 has the disadvantages of characteristic impedance drift, lack of electrostatic (EMI) protection, more common mode effects, more near-end crosstalk, and more far-end crosstalk.

The creators then devoted their minds to research and developed a transmission line structure and transmission line device in order to provide electrostatic protection and reduce common mode effects, near-end crosstalk and far-end crosstalk.

The first aspect of the present invention provides a transmission line structure. The transmission wire structure includes a first transmission wire bundle, a second transmission wire bundle, and a ground wire disposed between the first transmission wire bundle and the second transmission wire bundle. The first transmission wire bundle is covered by a first conductive covering member, the second transmission wire bundle is covered by a second conductive covering member, and the ground wire is in electrical contact with the outer surface of the first conductive covering member surface and the outer surface of the second conductive coating. The first transmission wire bundle and the second transmission wire bundle respectively include two transmission wires.

A second aspect of the present invention provides a transmission line device. The transmission line device includes an overall covering member and a plurality of the aforementioned transmission line structures. The transmission line structures are encapsulated in the overall covering.

In one embodiment, the transmission line structures are arranged side by side in a row.

In one embodiment, the first conductive covering member and the second conductive covering member are aluminum foil covering members, respectively.

In one embodiment, the two transmission wires of the first transmission wire bundle respectively have a wire and an inner covering member covering the wire, and the first conductive covering member is in contact with the inner covering members of the two transmission wires.

In one embodiment, the two transmission wires of the second transmission wire bundle respectively have a wire and an inner covering member covering the wire, and the second conductive covering member is in contact with the inner covering members of the two transmission wires.

In one embodiment, the two transmission lines of the first transmission line bundle are close to each other.

In one embodiment, the two transmission lines of the second transmission line bundle are close to each other.

Therefore, in the transmission line structure and the transmission line device of the present invention, each transmission line structure is electrically contacted with the outer surface of the adjacent first conductive covering member and the outer surface of the second conductive covering member by a ground wire, and the first The first transmission wire bundle and the second transmission wire bundle respectively include two transmission wires, so it can effectively achieve electrostatic protection and reduce common mode effect, near-end crosstalk and far-end crosstalk.

In order to fully understand the purpose, features and effects of this creation, hereby use the following specific embodiments and cooperate with the attached drawings to give a detailed description of this creation, and the description is as follows:

Please refer to FIG. 2 , a first aspect of the present invention provides a transmission line structure 11 . The transmission line structure 11 is suitable for a transmission line device 1 (eg, a flat cable) and includes a first transmission line bundle 12 , a second transmission line bundle 13 , and a connection between the first transmission line bundle 12 and the second transmission line bundle 13 . Ground wire 14. The first transmission wire bundle 12 is covered by a first conductive covering member 15 , the second transmission wire bundle 13 is covered by a second conductive covering member 16 , and the ground wire 14 is in electrical contact with the first conductive covering member 16 . The outer surface of the covering member 15 and the outer surface of the second conductive covering member 16 . The first transmission wire bundle 12 and the second transmission wire bundle 13 respectively include two transmission wires 17 . The transmission line device 1 can be connected between a socket element (not shown) and a circuit board (not shown) having a plurality of connecting parts (eg gold fingers), thereby transmitting high frequency such as audio and video signals or data signals signal. The way of connection can be welding, but not limited to this.

Please refer to FIG. 2 , a second aspect of the present invention provides a transmission line device 1 (eg, a flat cable). The transmission line device 1 includes an overall covering 10 and a plurality of the aforementioned transmission line structures 11 . The transmission line structures 11 are wrapped in the overall covering 10 .

As described above, in the transmission line structure 11 and the transmission line device 1 of the present invention, each transmission line structure 11 electrically contacts the outer surface of the adjacent first conductive covering member 15 and the second conductive covering member with a ground wire 14 16 , and the first transmission wire bundle 12 and the second transmission wire bundle 13 respectively include two transmission wires 17 , thus effectively providing electrostatic protection and reducing common mode effect, near-end crosstalk and far-end crosstalk.

As shown in FIG. 2 , in one embodiment, the transmission line structures 11 are arranged in parallel in a row to form a cable. The ground line 14 can be connected to the ground through the device to which the transmission line device 1 is connected to discharge excess electric charges. The ground wire 14 can be copper wire, silver wire, gold wire or other high conductivity metal or alloy.

As shown in FIG. 2 , in one embodiment, the first conductive covering member 15 and the second conductive covering member 16 are respectively aluminum foil covering members to improve electrical conductivity. But not limited to this, the material of the first conductive covering member 15 and the second conductive covering member 16 can also be other conductive metals such as copper, or alloys such as aluminum alloy.

As shown in FIG. 2 , in one embodiment, the two transmission wires 17 of the first transmission wire bundle 12 and the two transmission wires 17 of the second transmission wire bundle 13 respectively have a wire 170 and an inner covering member covering the wire 170 . 171, to be insulated from each other. The first conductive covering members 15 are in contact with the corresponding inner covering members 171 of the two transmission lines 17 , and the second conductive covering members 16 are in contact with the corresponding inner covering members 171 of the two transmission lines 17 . In addition, the two transmission wires 17 of the first transmission wire bundle 12 and the two transmission wires 17 of the second transmission wire bundle 13 are also close to each other to save space. The wires 170 can be copper wires, silver wires, gold wires, or other highly conductive metals or alloys.

In order to verify the efficacy of the transmission line structure 11 and the transmission line device 1 shown in FIG. 2 , the applicant conducts actual measurements on the product having the transmission line structure 11 and the transmission line device 1 . One of the transmission line structures 11 of the transmission line device 1 is described below, and the performance of the other transmission line structures 11 is similar to that of the one of the transmission line structures 11 .

As shown in FIG. 3 , the transmission line structure 11 (and the transmission line device 1 ) of the present invention is significantly improved in the IL (SDD21) attenuation curve.

As shown in FIG. 4 , the transmission line structure 11 (and the transmission line device 1 ) of the present invention can effectively reduce the near-end reflection loss of the RL NEAR (SDD11).

As shown in FIG. 5 , the transmission line structure 11 (and the transmission line device 1 ) of the present invention can effectively reduce the reflection loss at the far end of the RL FAR (SDD22).

As shown in FIG. 6 , the transmission line structure 11 (and the transmission line device 1 ) of the present invention can effectively reduce the effect of the SCD21 common-mode signal on the S-parameter of the differential signal.

As shown in FIG. 7 , the transmission line structure 11 (and the transmission line device 1 ) of the present invention can effectively reduce the effect of the SCD22 common-mode signal on the S-parameter of the differential signal.

As shown in FIG. 8 , the transmission line structure 11 (and the transmission line device 1 ) of the present invention can effectively reduce the effect of the SCC11 common-mode signal on the S-parameter of the common-mode signal.

As shown in FIG. 9 , the transmission line structure 11 (and the transmission line device 1 ) of the present invention can effectively reduce the effect of the SCC22 common-mode signal on the S-parameter of the common-mode signal.

As shown in FIG. 10 , the transmission line structure 11 (and the transmission line device 1 ) of the present invention can effectively reduce the effect of the SCD21-SDD21 common mode signal on the S-parameter of the differential signal and the differential signal on the S-parameter of the differential signal.

The present creation has been disclosed above with preferred embodiments, but those skilled in the art should understand that the embodiments are only used to describe the present creation, and should not be construed as limiting the scope of the present creation. It should be noted that all changes and substitutions equivalent to this embodiment should be set to be included in the scope of the present creation. Therefore, the scope of protection of this creation shall be determined by the scope of the patent application.

1: Transmission line device 10: Total Covering Pieces 11: Transmission line structure 12: The first transmission harness 13: Second transmission harness 14: Ground wire 15: The first conductive coating 16: Second conductive coating 17: Transmission line 170: Wire 171: inner covering 8: Known high frequency transmission line 80: Known outer covering 81: Known Transmission Line 82: Conventional inner covering

FIG. 1 shows the structure of a conventional high frequency transmission line in the prior art. FIG. 2 is a schematic diagram of a transmission line structure and a transmission line device according to a specific embodiment of the present invention. FIG. 3 is a schematic diagram of the IL (SDD21) attenuation curve measured by the transmission line structure according to the specific embodiment of the present invention. FIG. 4 is a schematic diagram of the near-end reflection loss of RL NEAR (SDD11) measured by the transmission line structure of the specific embodiment of the present invention. FIG. 5 is a schematic diagram of the far-end reflection loss of the RL FAR (SDD22) measured by the transmission line structure of the specific embodiment of the present invention. FIG. 6 is a schematic diagram of the S-parameters of the SCD21 common mode signal versus the differential signal measured by the transmission line structure of the specific embodiment of the present invention. FIG. 7 is a schematic diagram of the S-parameters of the SCD22 common-mode signal versus the differential signal measured by the transmission line structure according to the specific embodiment of the present invention. FIG. 8 is a schematic diagram of S-parameters of the SCC11 common-mode signal to the common-mode signal measured by the transmission line structure of the specific embodiment of the present invention. FIG. 9 is a schematic diagram of S-parameters of the SCC22 common-mode signal to the common-mode signal measured by the transmission line structure of the specific embodiment of the present invention. 10 is a schematic diagram of the SCD21-SDD21 common mode signal versus differential signal S-parameter and the differential signal versus differential signal S-parameter measured by the transmission line structure of the specific embodiment of the present invention.

1: Transmission line device

10: Total Covering Pieces

11: Transmission line structure

12: The first transmission harness

13: Second transmission harness

14: Ground wire

15: The first conductive coating

16: Second conductive coating

17: Transmission line

170: Wire

171: inner covering

Claims (9)

A transmission line structure comprising: a first transmission harness; a second transmission harness; a ground wire, arranged between the first transmission wire bundle and the second transmission wire bundle; The first transmission wire bundle is covered by a first conductive covering member, the second transmission wire bundle is covered by a second conductive covering member, and the ground wire is in electrical contact with the first conductive covering member an outer surface and an outer surface of the second conductive covering; The first transmission wire bundle and the second transmission wire bundle respectively include two transmission wires. The transmission line structure of claim 1, wherein the first conductive covering member and the second conductive covering member are aluminum foil covering members, respectively. The transmission line structure of claim 1, wherein the two transmission lines of the first transmission line bundle respectively have a wire and an inner covering member covering the wire, and the first conductive covering member is in contact with the first transmission wire bundle. The inner covering parts of the two transmission lines; the two transmission lines of the second transmission wire bundle respectively have a wire and an inner covering part covering the wire, and the second conductive covering part is in contact with the two transmission wires of the second transmission wire bundle. Inner cladding. The transmission line structure according to claim 1, wherein the two transmission lines of the first transmission line bundle are close to each other; the two transmission lines of the second transmission line bundle are close to each other. A transmission line device comprising: a total covering; and A plurality of transmission line structures are encapsulated in the overall covering member, each of the transmission line structures includes a first transmission line bundle, a second transmission line bundle, and a ground wire disposed between the first transmission line bundle and the second transmission line bundle ; The first transmission wire bundle is covered by a first conductive covering member, the second transmission wire bundle is covered by a second conductive covering member, and the ground wire is in electrical contact with the first conductive covering member an outer surface and an outer surface of the second conductive covering; The first transmission wire bundle and the second transmission wire bundle respectively include two transmission wires. The transmission line device as claimed in claim 5, wherein the transmission line structures are arranged in parallel in a row. The transmission line device according to claim 5, wherein the first conductive covering member and the second conductive covering member are aluminum foil covering members respectively. The transmission line device of claim 5, wherein the two transmission lines of the first transmission line bundle respectively have a wire and an inner covering member covering the wire, the first conductive covering member is in contact with the first transmission wire bundle The inner covering parts of the two transmission lines; the two transmission lines of the second transmission wire bundle respectively have a wire and an inner covering part covering the wire, and the second conductive covering part is in contact with the two transmission wires of the second transmission wire bundle. Inner cladding. The transmission line device of claim 5, wherein the two transmission lines of the first transmission line bundle are abutted against each other; and the two transmission lines of the second transmission line bundle are abutted against each other.

Images