High-speed and low-loss mixed medium dual coaxial differential transmission signal wire structure
A mixed-medium, differential transmission technology, applied in the field of communication materials, can solve the problems of large coupling between conductors and shields, inability to adjust, and increase in common-mode loss, achieving optimal tuning and differential and common-mode impedance, small physical size, and insertion loss. low effect
Inactive Publication Date: 2017-04-19
HANGZHOU LEROM WIRE & ELECTRIC APPLIANCE
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Problems solved by technology
[0004] 1. They all use an insulating medium on the conductor as the carrier for signal transmission. The specifications are fixed, and the center distance is fixed. It cannot be adjusted and takes up a lot of space.
[0005] 2. If you want to reduce the size, you must reduce the specification, then the transmission effect will be significantly reduced, and the insertion loss will increase significantly at the same length
[0006] 3. The coupling between the conductor and the shield is large, and the common mode loss increases
Method used
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Embodiment 1
[0020] Such as Figure 1-2 As shown, the high-speed low-loss mixed-medium dual-coaxial differential transmission signal line structure includes a main body 1, a conductor 11, a first insulating layer 12, a second insulating layer 13, a shielding layer 14, a mylar layer 15, and a ground wire 16. The first insulating layer 12 wraps the conductor 11 to form a core wire. The two core wires are placed side by side and wrapped sequentially through the second insulating layer 13 and the shielding layer 14 to form a wrapped wire. The mylar layer 15 combines the wrapped wire with the shielding layer 14. The ground wire 16 is wrapped to form the signal wire structure main body 1; the material of the first insulating layer 52 is Skin-Foam-Skin or HDPE; the second insulating layer 53 is an EPTFE layer, and the EPTFE layer is formed by winding an EPTFE tape , the winding overlap rate is 50%; the shielding layer 54 is aluminum foil Mylar or copper foil Mylar; the conductor 51 is bare copper...
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Abstract
The invention discloses a high-speed and low-loss mixed medium dual coaxial differential transmission signal wire structure which comprises a main body, conductors, first insulating layers, a second insulating layer, a shielding layer, a mylar layer and a ground wire. The first insulating layers wrap the conductors to form core wires. Two core wires are arranged side by side and are successively wrapped by the second insulating layer and the shielding layer to form a wrapped wire. The mylar layer wraps the wrapped wire and the ground wire to form the signal wire structure main body. The high-speed and low-loss mixed medium dual coaxial differential transmission signal wire provided by the invention has the advantages of great transmission performance, lower insertion loss, long transmission distance, increased transmission bandwidth, small wire physical size, reduced occupied space and large shielding area. The coupling between the signal wire conductors can be increased. The coupling between the conductors and the shield is reduced. Differential and common mode impedance can be better reconciled.
Description
technical field [0001] The invention relates to a signal line, specifically a high-speed and low-loss mixed-medium dual-coaxial differential transmission signal line structure, belonging to the technical field of communication materials. Background technique [0002] The signal line mainly refers to the line used to transmit sensing information and control information in the electrical control circuit. Signal lines are often composed of multiple cables as one or more bundles of transmission lines, or they can be printed lines arranged in printed circuit boards. With the continuous advancement of technology and applications, signal lines have developed from metal carriers to other Carriers, such as optical cables, etc. Signal lines for different purposes often have different industry standards to facilitate standardized production and application. [0003] Similar signal line products currently on the market have the following disadvantages: [0004] 1. They all use an ins...
Claims
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IPC IPC(8): H01B7/02H01B7/08H01B11/00H01B11/06
CPCH01B7/0291H01B7/0216H01B7/0807H01B7/0823H01B7/0861H01B11/002H01B11/06
Inventor 张军萍石磊许利强
Owner HANGZHOU LEROM WIRE & ELECTRIC APPLIANCE