High frequency transmission cable

• US 6,803,518 B2
• Filed: 07/26/2002
• Issued: 10/12/2004
• Est. Priority Date: 07/18/2002
• Status: Expired due to Fees

• Current Assignee: Shang-Lun Ing
• Original Assignee: Compass Technology Company, Limited
• Inventors: Chang, Che-Chia
• Primary Examiner(s): Tokar, Michael
• Assistant Examiner(s): NGUYEN, KHAI M
• Application Number:
  US10/205,415
• Publication Number:
  US 20040017264A1
• Time in Patent Office: 809 Days
• Field of Search: 174/34, 174/36, 174/102.R, 174/105.R, 174/106.R, 174/113.R, 174/117.F, 333/1, 333/5
• US Class Current: 174/36
• CPC Class Codes: H01B 11/002 Pair constructions
• CPC Class Codes: H01B 7/0823 Parallel wires, incorporated in a flat insulating profile
• CPC Class Codes: H01B 7/0861 comprising one or more screens

Abstract

A high frequency transmission cable includes one or more propagation channel sets, an inner covering wrapping the propagation channel sets and providing an effect of shield, drain wires and a jacket. Two conductors in each of the propagation channels are joined to each other tightly as a single piece to perform communication of electrical appliances in a way of the conductor pair juxtaposing and being flush with each other surely for avoiding signals transmitted in the conductors becoming not synchronous due to the conductors being in inconsistent length resulting from the cable being bent so as to enhance the frequency width of the transmission cable.

Claims

1. A high frequency transmission cable comprising:

a) at least one propagation channel set, each propagation channel set having two independent conductors;

b) a three-layer inner covering located around each propagation channel set and having;

i) a locating layer;

ii) an insulation layer located on the locating layer; and

iii) a conductive layer located on the insulation layer;

c) at least one drain wire on an exterior of each three-layer inner covering; and

d) a jacket located around the at least one drain and each three-layer inner covering,

wherein the two independent conductors of each propagation channel set are positioned juxtaposed and flush, and adjoined as a single piece by the locating layer, such that the two independent conductors are a consistent length to transmit synchronous signals.

2. The high frequency transmission cable as defined in claim 1, wherein the locating layer is made of thermo-melting plastics.

3. The high frequency transmission cable as defined in claim 1, wherein the three-layer inner covering is formed by way of a strip material enwinding and wrapping the two independent conductors.

4. The high frequency transmission cable as defined in claim 1, wherein jacket is made of a material selected from a group consisting of PVC, PE and PP.

5. A high frequency transmission cable comprising:

a) at least one propagation channel set, each propagation channel set having two independent conductors;

b) at least one inner covering located around each propagation channel set and having;

i) an insulation layer; and

iii) a conductive layer;

c) at least one drain wire located adjacent to the conductive layer; and

d) a jacket forming an outer most protective layer,

wherein the two independent conductors of each propagation channel set are positioned juxtaposed and flush, and formed as a single piece, such that the two independent conductors are a consistent length to transmit synchronous signals, wherein the insulation layer is located on an interior of the conductive layer and the at least one drain wire is located on an exterior of the conductive layer.

6. The high frequency transmission cable as defined in claim 5, wherein the inner covering is formed by way of a strip of material enwinding and wrapping the two independent conductors.

7. The high frequency transmission cable as defined in claim 5, wherein jacket is made of a material selected from a group consisting of PVC, PE and PP.

8. The high frequency transmission cable as defined in claim 5, wherein the conductive layer is made of a material selected from a group consisting of gold foil, silver foil and aluminum foil.